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Jeltzlin Semerel¹, Nigel John¹, Wim Dehaen², Pedro Fardim^3,*
Journal of Renewable Materials, Vol.11, No.3, pp. 1031-1061, 2023, DOI:10.32604/jrm.2022.023449
（This article belongs to this Special Issue: Renewable Material from Agricultural Waste and By-Product and Its Applications)
Abstract Aloe vera plant is known worldwide for its medicinal properties and application in gel-based products such as shampoo, soap, and sunscreen. However, the demand for these gel-based products has led to a surplus production of Aloe vera processing waste. An Aloe vera gel processing facility could generate up to 4000 kg of Aloe vera waste per month. Currently the Aloe vera waste is being disposed to the landfill or used as fertilizer. A sustainable management system for the Aloe vera processing waste should be considered, due to the negative societal and environmental impacts of the currents waste disposal methods. Therefore,… More >

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Sai Gong^1,2,#, Shanglin Xiang^1,#, Tingwei Wang^1,*, Dongyu Cai^2,*
Journal of Renewable Materials, Vol.11, No.3, pp. 1063-1076, 2023, DOI:10.32604/jrm.2022.023011
Abstract Waterborne polymers are vital for coating industry to reduce carbon emissions. However, formation of robust and self-healable films at ambient temperature remains a challenge owing to high energy cost of film formation process. This work reports a solar-driven film formation of waterborne polyurethanes (WPUs) containing disulfide bonds via in-situ incorporation of 2D titanium carbide (MXene) with ability to convert light to heat. Instead of directly mixed with WPUs, MXene is added to join the reaction with isocyanate-terminated pre-polymer before emulsification process. This approach not only prevents aggregation of MXene in water but stabilizes MXene against thermal degradation which is the… More >

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REVIEW

Jean Jalin Eyinga Biwôlé^1,4,*, Achille Bernard Biwolé¹, Antonio Pizzi^4,*, Joseph Zobo Mfomo¹, César Segovia³, Atangana Ateba², Evariste Fedoung Fongnzossie¹, Sahbi Ouertani^4,5, Xinyi Chen⁴, Bénoît Ndiwe^1,2, Dieudonné Abessolo^1,2, Pierre-Jean Meausoone⁴
Journal of Renewable Materials, Vol.11, No.3, pp. 1077-1099, 2023, DOI:10.32604/jrm.2023.024079
（This article belongs to this Special Issue: Renewable and Biosourced Adhesives-2021)
Abstract Wood plays a major role in the production of furniture and wooden structures. Nevertheless, in this process, the massive use of adhesives and plural connectors remains a definite problem for health and the environment. Therefore, wood welding is a breakthrough in this respect. This paper reviews the applications of wood welding in furniture and construction and then examines advances in improving the durability of welded wood against water. Our contribution also highlights the need to join African tropical woods using the rotational friction welding technique. According to our results, these woods present interesting chemical singularities, which could provide solutions to… More >

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Haneen D. Jabbar^1,*, Makram A. Fakhri^1,*, Mohammed Jalal Abdul Razzaq¹, Omar S. Dahham^2,3, Evan T. Salim⁴, Forat H. Alsultany⁵, U. Hashim⁶
Journal of Renewable Materials, Vol.11, No.3, pp. 1101-1122, 2023, DOI:10.32604/jrm.2023.023698
（This article belongs to this Special Issue: Carbon-Based Nanomaterials from Renewable Materials: Synthesis, Properties and Applications)
Abstract Gallium nitride (GaN)/porous silicon (PSi) film was prepared using a pulsed laser deposition method and 1064 nm Nd: YAG laser for optoelectronic applications and a series of Psi substrates were fabricated using a photoelectrochemical etching method assisted by laser at different etching times for 2.5–15 min at 2.5 min intervals. X-ray diffraction, room-temperature photoluminescence, atomic force microscopy and field emission scanning electron microscopy images, and electrical characteristics in the prepared GaN on the Psi film were investigated. The optimum Psi substrate was obtained under the following conditions: 10 min, 10 mA/cm², and 24% hydrofluoric acid. The substrate exhibited two highly cubic crystalline structures at (200)… More >

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Huicheng Xu, Hao Xie, Weidong Shan, Weihong Wang^*
Journal of Renewable Materials, Vol.11, No.3, pp. 1123-1135, 2023, DOI:10.32604/jrm.2022.023959
（This article belongs to this Special Issue: Bio-based/Degradable Materials towards A Sustainable Future)
Abstract Straw utilization is a key issue related to agricultural production and air pollution control. In this study, a novel extrusion process was proposed to improve the physical and mechanical properties of the straw-reinforced linear low-density polyethylene (LLDPE) composite. Instead of crushing the straw and mixing it with plastic matrix, the new method mixes straw with plastic matrix in its original form. The intact long rice straws were parallelly spread on the LLDPE film and then rolled up together into a prefabricated roll. The rolls experienced three extrusion processes as follows: (1) twin-screw melting, cooling and crushing, single-screw extruding; (2) twin-screw… More >

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Chengtao Gao^1,2, Yang Wu³, Haibo Xie^1,*
Journal of Renewable Materials, Vol.11, No.3, pp. 1137-1152, 2023, DOI:10.32604/jrm.2022.021473
（This article belongs to this Special Issue: Polylactide Based Biopolymeric Systems)
Abstract

Due to the increasing demand for modified polylactide (PLA) meeting “double green” criteria, the research on sustainable plasticizers for PLA has attracted broad attentions. This study reported an open-ring polymerization method to fabricate cellulose (MCC)-g-PCL (poly (ε-caprolactone)) copolymers with a fully sustainable and biodegradable component. MCC-g-PCL copolymers were synthesized, characterized, and used as green plasticizers for the PLA toughening. The results indicated that the MCC-g-PCL derivatives play an important role in the compatibility, crystallization, and toughening of the PLA/MCC-g-PCL composites. The mechanical properties of the fully bio-based PLA/MCC-g-PCL composites were optimized by adding 15 wt% MCC-g-PCL, that is, the elongation… More >

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Yuchen Yang^1,2, Lin Ma^1,2,*, Jie Yu^1,2, Zewen Zhao^1,2, Pengfei You^1,2
Journal of Renewable Materials, Vol.11, No.3, pp. 1153-1179, 2023, DOI:10.32604/jrm.2022.022719
（This article belongs to this Special Issue: New Insights on Nanomaterials for Energy, Environmental and Agricultural Applications)
Abstract The use of nanorefrigerants in Organic Rankine Cycle (ORC) units is believed to affect the cycle environment performance, but backed with very few relevant studies. For this purpose, a life cycle assessment (LCA) has been performed for the ORC system using nanorefrigerant, the material and energy input, characteristic indicators and comprehensive index of environmental impact, total energy consumption and energy payback time (BPBT) of the whole life cycle of ORC system using Al₂O₃/R141b nanorefrigerant were calculated. Total environmental comprehensive indexes reveal that ECER-135 index decrease by 1.5% after adding 0.2% Al₂O₃ nanoparticles to R141b. Based on the contribution analysis and… More >

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Che Engku Noramalina Che Engku Chik¹, Amyra Suryatie Kamaruzzan¹, Ahmad Ideris Abdul Rahim¹, Fathurrahman Lananan^2,3, Azizah Endut⁴, Siti Aslamyah⁵, Nor Azman Kasan^1,*
Journal of Renewable Materials, Vol.11, No.3, pp. 1181-1197, 2023, DOI:10.32604/jrm.2023.022755
（This article belongs to this Special Issue: Bio-based Composite/Hybrid Structures and Components)
Abstract Chitin is the second most abundant polysaccharide, produced mainly as an industrial waste stream during crustacean processing. Chitin can be derived into chitosan through the deacetylation process. Conversion of shrimp waste into chitosan via the deacetylation process could be considered a practical approach for shell waste remediation. In this study, chitosan’s physicochemical characteristics extracted from two types of Pacific white leg shrimp, L. vannamei’s shell (i.e., rough and smooth), were compared with commercial chitosan. The yield, moisture, ash, solubility, water and fat binding capacity were measured. The degree of deacetylation (DDA) was calculated using FTIR, and their chemical Structure was… More >

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Yuzhi Wu¹, Cunzhen Geng^1,*, Chaochao Cui², Zhefeng Xin², Yanzhi Xia¹, Zhixin Xue^1,*
Journal of Renewable Materials, Vol.11, No.3, pp. 1199-1208, 2023, DOI:10.32604/jrm.2022.022976
（This article belongs to this Special Issue: Natural Fibre Composites: Design, Materials Selection and Fabrication)
Abstract The sulfate groups in agar structure played a good role in the formation of fiber. However, commercially available agar is usually extracted from red algae by alkali treatment to decrease the content of sulfate group for the purpose of high gel strength. In this paper, an alkali-free method of agar extraction from Gracilaria lemaneiformis was proposed for the wet-spinning purpose. This method is environmentally friendly, reduces the extraction steps, saves energy, and reduces the production cost of agar fiber. The improved agar preparation process not only has higher agar yield, but also has higher molecular weight and sulfate group content,… More >

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Henghui Deng^1,2, Jingyi Lu^1,2, Dunsheng Liang^1,2, Xiaomin Wang^1,2, Tongyao Wang^1,2, Weihao Zhang^1,2, Jing Wang^3,*, Chaoqun Zhang^1,2,*
Journal of Renewable Materials, Vol.11, No.3, pp. 1209-1222, 2023, DOI:10.32604/jrm.2022.023371
Abstract In this study, acrylic acid was used as a neutralizer to prepare bio-based WPU with an interpenetrating polymer network structure by thermally induced free radical emulsion polymerization. The effects of the content of acrylic acid on the properties of the resulting waterborne polyurethane-poly (acrylic acid) (WPU-PAA) dispersion and the films were systematically investigated. The results showed that the cross-linking density of the interpenetrating network polymers was increased and the interlocking structure of the soft and hard phase dislocations in the molecular segments of the double networks was tailored with increasing the content of acrylic acid, leading to enhancement of the… More >

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Zhaopeng Wang, Shaowu Jiu, Hui Li^*, Kaifeng Zhang, Simeng Cheng
Journal of Renewable Materials, Vol.11, No.3, pp. 1223-1236, 2023, DOI:10.32604/jrm.2022.022893
Abstract The preparation of cementitious materials by replacing part of the cement with activated coal gangue is of great significance to the cement industry in terms of carbon reduction and coal-based solid waste utilization. For this paper, cementitious material was prepared by firing activated coal gangue under suspension conditions and batching it with limestone powder using Inner Mongolia coal gangue as raw material. The optimal ratio was determined by testing the strength changes of the cementitious material at 3, 7, and 28 days of hydration, and the hydration process and mechanism were explored by combining the pore structure, heat of hydration,… More >

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Yalin Li^1,2,*, Yu Huang², Lei Liu¹, Haozhao Liu¹, Haiyang He¹, Dongxue Lu¹, Tingting Dong¹
Journal of Renewable Materials, Vol.11, No.3, pp. 1237-1253, 2023, DOI:10.32604/jrm.2022.022972
Abstract

In this study, hydrogels were prepared from municipal sludge to recycle and realize the value-added utilization of the carbon components in this abundant waste material. The carbon sources were extracted from the municipal sludge using synthesised nano CaO₂ as an oxidant, and the carbon sources were graft copolymerised with acrylic acid monomer using N, N′-methylenebisacrylamide as a crosslinking agent and ammonium persulfate as an initiator. The factors influencing the hydrogel preparation were investigated by single-factor experiments. Based on the results of the single-factor experiments, a hydrogel with a swelling ratio of up to 19768.4% at 12 h was prepared with… More >

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Eglė Malachovskienė^1,*, Danguolė Bridžiuvienė¹, Jolita Ostrauskaitė², Justina Vaičekauskaitė², Gailė Žalūdienė³
Journal of Renewable Materials, Vol.11, No.3, pp. 1255-1269, 2023, DOI:10.32604/jrm.2022.023574
（This article belongs to this Special Issue: Bio-based/Degradable Materials towards A Sustainable Future)
Abstract The biodegradation of polymeric biocomposites formed from epoxidized linseed oil and various types of fillers (pine needles, pine bark, grain mill waste, rapeseed cake) and a control sample without filler was studied during 180 days of exposure to two types of forest soil: deciduous and coniferous. The weight loss, morphological, and structural changes of polymer composites were noticed after 180 days of the soil burial test. The greatest weight loss of all tested samples was observed in coniferous forest soil (41.8%–63.2%), while in deciduous forest soil, it ranged between 37.7% and 42.3%. The most significant changes in the intensities of… More >

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Ashish Malik^*, Sanjay Kumar Singh
Journal of Renewable Materials, Vol.11, No.3, pp. 1271-1291, 2023, DOI:10.32604/jrm.2022.023084
（This article belongs to this Special Issue: Renewable Material from Agricultural Waste and By-Product and Its Applications)
Abstract An experimental program was conducted to determine the dynamic properties of pond ash (PA) and pond ash mixed with admixtures like crumb rubber (CR) and coir fiber (CF) which are wastes of different industries. Additives CR and CF were mixed separately with pond ash in a percentage ranging from 0%–20% at an interval of 5% and 0%–2% at an interval of 0.5% by weight of pond ash, respectively. Dynamic properties (Shear modulus, Number of cycles to initiate liquefaction, Degradation index and Damping ratio) for pond ash mixes were determined using strain-controlled cyclic tri-axial apparatus. The shear strain was kept constant… More >

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Wei Hu^1,2, Fengjuan Si³, Hongtao Xue¹, Wensheng Li¹, Jun Hu⁴, Fuling Tang^1,*
Journal of Renewable Materials, Vol.11, No.3, pp. 1293-1301, 2023, DOI:10.32604/jrm.2022.023095
（This article belongs to this Special Issue: Perovskite Solar Cells)
Abstract This work investigates the effect of passivation on the electronic properties of inorganic perovskite CsPbI₃ materials by using first-principles calculations with density functional theory (DFT). The passivation effect after the addition of Phenylethylamine (PEA⁺ ) molecule to CsPbI₃ (110) surface is studied. The results of density of states (DOS) calculations show that the CsPbI₃ (110) surface model with I atom terminated reveals new electronic DOS peaks (surface states) near the Fermi level. These surface states are mainly due to the contribution of I-5p orbital and are harmful to the CsPbI₃-based solar cells because they reduce the photoelectric conversion efficiency. The… More >

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Yanfeng Zhu¹, Huidong Shi¹, Qing Ju¹, Dong Zhao¹, Yucai Shen^1,2,*, Tingwei Wang^1,2,*
Journal of Renewable Materials, Vol.11, No.3, pp. 1303-1319, 2023, DOI:10.32604/jrm.2022.023129
Abstract Poly(butylene adipate-co-terephthalate) (PBAT) and poly(butylene succinate-co-adipate) (PBSA) blend films were prepared with different contents of a multifunctional epoxide chain extender Joncryl ADR-4468 (ADR) or benzoyl peroxide (BPO). The long-chain-branching (LCB) introduced by ADR and branched/crosslinked entanglement induced by BPO increased melt elasticity, viscosity and compatibility, as indicated by thermal properties, rheological and morphological analyses. It was found that the elongation at break and the tensile strength were significantly improved, due to the enhancement of compatibility and the interfacial adhesion by the incorporation of ADR or BPO. The best mechanical properties were obtained in PBAT/PBSA/ADR (60/40/0.3) (A4T6A_0.3) and PBAT/PBSA/BPO (60/40/0.9) (A4T6B_0.9)… More >

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Yiguang Wang^1,2, Zhe Zhang¹, Xun Zhang^1,*
Journal of Renewable Materials, Vol.11, No.3, pp. 1321-1337, 2023, DOI:10.32604/jrm.2022.023266
（This article belongs to this Special Issue: Potential Materials Towards Sustainable Construction)
Abstract Fibre can enhance the mechanical properties of cement-based composites, but fibre also degrades their workability. However, the quantitative effects of fiber content and length-diameter ratio on alkali-activated materials are still unclear. Various aspect ratio, volume fraction of polyvinyl alcohol fibre (PVAF), and various water-binder ratio were employed to prepare a total of 26 groups of fibre reinforced alkali-activated composite (FRAAC). The influence of PVAF fibre factor (product of fiber volume fraction and length-diameter ratio) on flowability, compactness, strength, and crack fractal dimension of FRAAC was researched. The influence of water-binder ratio on the plastic viscosity of FRAAC was more significant… More >

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Jing Xu^1,2,*, Yuquan Yao³, Kai Zhang¹, Jiangang Yang², Jie Gao², Jian Zhou²
Journal of Renewable Materials, Vol.11, No.3, pp. 1339-1351, 2023, DOI:10.32604/jrm.2022.023270
Abstract This study focuses on the effect of oils on rheology and oxidation aging of Styrene-Butadiene-Styrene modified asphalt (SBSMA) in the long term, after reducing one low-temperature Performance Grade (PG) of SBSMA by incorporating oils. Two oils, including corn-based bio-oil and re-refined engine oil bottom (REOB), were selected to enhance the low-temperature performance of SBSMA. All samples were subjected to Rolling Thin Film Oven (RTFO) aging and 20-h as well as 40-h Pressure Aging Vessel (PAV20 and PAV40) aging, prior to multiple stress creep recovery (MSCR), frequency sweep and Flourier transform infrared spectroscopy (FTIR) scanning. A good high-temperature performance of oil/SBS… More >

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Xianqing Xiong^1,2,*, Xinyi Yue², Zhihui Wu^1,2
Journal of Renewable Materials, Vol.11, No.3, pp. 1353-1366, 2023, DOI:10.32604/jrm.2022.023447
（This article belongs to this Special Issue: Advances in Eco-friendly Wood-Based Composites: Design, Manufacturing, Properties and Applications)
Abstract In this work, the current status, technical capabilities, and development trends of the Chinese intelligent furniture industry were in focus. Based on combining a literature review with field investigations and analysis of major scientific research projects in Zhejiang Province, China, an in-depth overview and discussion about previous experience, features, technologies, products and control methods in the intelligent furniture industry in China were conducted. The key technologies in current Chinese intelligent furniture industry include embedded systems, sensors, short-range wireless communication, artificial intelligence and intelligent interaction techniques. This work also mentions the challenges and opportunities for the industry, pointing out how to… More >

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Na Yao^1,2, Haiyang Ding^1,2,*, Mei Li², Pengcheng Wang³, Shouhai Li^1,2, Lina Xu², Xiaohua Yang²
Journal of Renewable Materials, Vol.11, No.3, pp. 1367-1381, 2023, DOI:10.32604/jrm.2022.023411
（This article belongs to this Special Issue: Renewable Biomass as a Platform for Preparing Green Chemistry)
Abstract A tung oil-based boron-nitrogen coordination polymer (TWE-BN) was specially designed and synthesized as a highly efficient water-based lubricant additive, which has been beneficial to both energy conservation and conducive to environmental protection. Its hydrolysis stability and tribological properties in water were investigated. To better research the lubricating properties, and thus to understand the interaction between the surface and the lubricating additives. Herein, both experimental and theoretical computations based on density functional theory (DFT) were performed. The addition of TWE-BN reduces the water friction coefficient and wear scar diameter, and the maximum non-seizure load increased from 93 to 726 N. Moreover, the… More >

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Dongfang Huang^1,4, Peng Lv^1,2,3,4,*, Changlin Zhong^1,2, Xingsheng Zhou^1,2, Zhichen Liu⁴
Journal of Renewable Materials, Vol.11, No.3, pp. 1383-1400, 2023, DOI:10.32604/jrm.2022.023261
（This article belongs to this Special Issue: Advanced Renewable Energy Storage Materials and Their Composite: Preparation, Characterization and Applications)
Abstract In this work, the microstructure, hydrogen storage properties, anti-oxide ability and rate limiting step of Zr(Cr_1−xCo_x)₂ (x = 0, 0.2, 0.4 and 0.6) alloys have been investigated. After studying the crystal structure, we found that all alloy samples could show C14-type phase but the alloy sample x = 0 could also show a small amount of Cr phase. Rietveld fitting showed that lattice parameter and unit cell volume of C14-type phase decreased with increasing x. After further research, it was clear that the first hydrogen absorption capacity decreased with increasing x. But introducing more Co content had a positive influence on the effective hydrogen… More >

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Shidong Nie^1,2, Wei Fu^1,2, Hui Wang^1,2,*, Di Wu^1,2,3, Min Liu^1,2, Junlong Wang⁴
Journal of Renewable Materials, Vol.11, No.3, pp. 1401-1423, 2023, DOI:10.32604/jrm.2022.023446
Abstract Moso bamboos have attracted excessive attention as a renewable green building material to the concept of sustainable development. In this paper, the 20 bolted Moso bamboo connection specimens with embedded steel plates and grouting materials were designed according to connection configurations with different bolt diameters and end distance of bolt holes, and their bearing capacities and failure modes were analyzed by static tension tests. According to the test results of all connectors, the failure modes of the specimens are divided into four categories, and the effects of bolt diameter and bolt hole end distance on the connection bearing capacity and… More >

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Jianyi Zhu¹, Hui Peng^1,2, Xiaoning Lu^1,2, Jianxiong Lyu^1,2,3, Tianyi Zhan^1,2,*
Journal of Renewable Materials, Vol.11, No.3, pp. 1425-1437, 2023, DOI:10.32604/jrm.2022.023464
（This article belongs to this Special Issue: Research and Innovations in Engineered Timber and Mass Timber Products for Sustainable Built-Environment)
Abstract Many tree species are planted in China with variable properties and usage. Toward exploring the structure-properties relationships of wood and classifying the species more reasonably, the physiomechanical properties of the domestic wood species in China were analyzed statistically. According to the correlation analysis, the mechanical properties were closely related to the wood density. Except impact toughness and cleavage strength, the correlation coefficients between mechanical properties and densities were more than 0.8. However, shrinkage properties showed fewer correlations with densities, and the coefficient was no more than 0.7. Primary component analysis was proved to be feasible to explore the information of… More >

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Qianyu Zhang^1,2, Antonio Pizzi³, Hong Lei^1,2,*, Xuedong Xi^1,2,*, Ming Cao^1,2, Long Cao^1,2
Journal of Renewable Materials, Vol.11, No.3, pp. 1439-1450, 2023, DOI:10.32604/jrm.2022.023535
（This article belongs to this Special Issue: Renewable and Biosourced Adhesives-2021)
Abstract Soy protein adhesives are currently a hot research topic in the wood panels industry for the abundant raw material reserves, reasonable price and outstanding environmental features. But their poor water resistance, low bonding strength and intolerance to mold are major drawbacks, so that proper modification before use is essential. Glutaraldehyde is one of the more apt cross-linking agents for soybean protein adhesives, which can effectively improve the bonding strength and water resistance of the adhesive. Equally, glutaraldehyde is also an efficient and broad-spectrum fungicide that can significantly improve the anti-fungal properties of a soy protein adhesive. In the work presented… More >

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Xiaoli Ye^1,2, Yuxia Guo^1,2,*, Peng Wang^1,2, Yonghui Zhao^1,2, Wenshuo Xie^1,2, Guorui Feng^1,2
Journal of Renewable Materials, Vol.11, No.3, pp. 1451-1467, 2023, DOI:10.32604/jrm.2022.023528
Abstract As a kind of green concrete, the mechanical properties and durability of cemented gangue backfill material (CGBM) will be affected if they are in acid mine water with sulfate ions in the long term. To improve the performance of CGBM in acid mine water with sulfate ions, CGBM specimens with different doses of barium hydroxide were immersed in sulfuric acid solutions of different concentrations for 270 days. The changes of mass, ultrasonic pulse velocity (UPV) and compressive strength of the specimens at different ages were analyzed. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to analyze the microstructure… More >

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Fulin Wang^*, Xinyang Geng, Zhengping Yuan, Shijiao Yang^*
Journal of Renewable Materials, Vol.11, No.3, pp. 1469-1484, 2023, DOI:10.32604/jrm.2022.024994
Abstract The use of some environmental functional minerals as backfill-modified materials may improve the leaching resistance of cemented uranium tailings backfill created from alkali-activated slag (CUTB), but these materials may participate in the hydration reaction of the cementitious materials, which could have a certain impact on the pore structure of the CUTB, thus affecting its mechanical properties and leaching resistance. In this paper, natural zeolite is selected as the backfill-modified material, and it is added to alkali-activated slag paste (AASP) and CUTB in cementitious material proportions of 4%, 8%, 12%, and 16% to prepare AASP mixtures and CUTB mixtures containing environmental… More >

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Suha Q. AL-Shahrabalee^*, Hussein Alaa Jaber
Journal of Renewable Materials, Vol.11, No.3, pp. 1485-1498, 2023, DOI:10.32604/jrm.2023.025011
Abstract Cancerous diseases and diseases resulting from bacteria and fungi are some of the pressures that humans face. Therefore, the development of biomaterials that are resistant to cancerous diseases, bacteria, and fungi has become one of the requirements of the medical field to extend the life of the biomaterial and fight pathogens after implanting these materials inside the human body. One of the important biomaterials used in the field of orthopedics is hydroxyapatite. In this research, Nano substituted hydroxyapatite was prepared by the wet precipitation method, including replacing 5% of the calcium ions with neodymium, cerium, magnesium, and zinc ions in… More >

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Ge Wang, Linbi Chen, Haiying Zhou^*, Shanyu Han, Fuming Chen^*
Journal of Renewable Materials, Vol.11, No.3, pp. 1499-1511, 2023, DOI:10.32604/jrm.2022.025130
（This article belongs to this Special Issue: Natural Fibre Composites: Design, Materials Selection and Fabrication)
Abstract To overcome warping in thin bamboo bundle veneer laminated composites (TBLC), their hydrothermal deformation characteristics were systematically investigated in this study. It was found that TBLCs accelerated the release of internal stress in the thickness direction in a hydrothermal environment, which increased their warpage. TBLCs showed increased warpage in the width and diagonal directions upon increasing the temperature. The warpage of Type E increased by 155.88% and 66.67% in the width and diagonal directions, respectively, when the temperature increased from 25 C to 100 C. The symmetrical TBLC with cross-lay-up and odd layers displayed better hydrothermal stability. We revealed that… More >

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Huazhe Jiao^1,2,3, Wenxiang Zhang^1,2,3,*, Yunfei Wang^1,2,3,*, Xinming Chen^1,2,3, Liuhua Yang^1,2,3, Yangyang Rong^1,2,3
Journal of Renewable Materials, Vol.11, No.3, pp. 1513-1529, 2023, DOI:10.32604/jrm.2023.026008
Abstract The green disposal of tailings solid waste is a problem to be solved in mine production. Cemented tailings filling stoping method can realize the dual goals of solid waste resource utilization and mined-out area reduction. However, the volume of the mined-out area of the open-pit method is larger than the filling capacity, resulting in the complex stratification of the underground backfill, and the strength of the backfill cannot meet the requirements. In this paper, according to the delamination situation, the specimens of horizontal and inclination angle layered cemented tailings backfill (LCTB) is made for a uniaxial compression test, and the… More >

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Xin Wan^1,2,#, Zhigang Xia^3,4,#, Xiaoli Yang^1,2, Chengfeng Zhou², Yuanming Zhang^1,2, Haoxi Ben^1,2, Guangting Han^1,2, Wei Jiang^1,2,*
Journal of Renewable Materials, Vol.11, No.3, pp. 1531-1531, 2023, DOI:10.32604/jrm.2023.027109
Abstract This article has no abstract. More >

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