Daiyuan Zhang¹, Qian He², Baocong Du², Junbao Yu^2,3, Xudong Zhu³, Dingyi Yang², Shengcai Li², Tianyi Zhan¹, Liming Shen^1,*, Zhiqiang Wang^1,*, Xiaoning Lu¹

Journal of Renewable Materials, Vol.10, No.3, pp. 721-734, 2022, DOI:10.32604/jrm.2022.016793 - 28 September 2021

Abstract Permeability of wood preservative is one of the most significant factors for protection of wood construction. Anisotropic flow permeability was involved in different directions of wood with higher flow resistance in the transverse and lower longitudinal directions. In this study, boron acid solution was brushed onto the tangential section of air-dried wood cubes and boron penetration along wood transverse direction was investigated under free diffusion, vacuum and HVEF treatments. Multi-scale boron distribution, FTIR measurement, leaching property, mechanical properties and fungistatic characteristic were investigated for free diffusion, vacuum and HVEF treated samples respectively. The results revealed… More >

Pooja Dange^1,#, Nishit Savla^1,#, Soumya Pandit^2,*, Rambabu Bobba³, Sokhee P. Jung⁴, Piyush Kumar Gupta², Mohit Sahni⁵, Ram Prasad^6,*

Journal of Renewable Materials, Vol.10, No.3, pp. 665-697, 2022, DOI:10.32604/jrm.2022.015806 - 28 September 2021

Abstract The focus of microbial fuel cell research in recent years has been on the development of materials, microbes, and transfer of charges in the system, resulting in a substantial improvement in current density and improved power generation. The cathode is generally recognized as the limiting factor due to its high-distance proton transfer, slow oxygen reduction reaction (ORR), and expensive materials. The heterogeneous reaction determines power generation in MFC. This comprehensive review describes-recent advancements in the development of cathode materials and catalysts associated with ORR. The recent studies indicated the utilization of different metal oxides, the… More >

Shidong Nie^1,2,*, Song Ran^1,2, Di Wu^1,2,3, Jieyu Chen^1,2, Hui Wang^1,2, Qike Wei⁴

Journal of Renewable Materials, Vol.10, No.2, pp. 487-510, 2022, DOI:10.32604/jrm.2022.017275 - 30 August 2021

Abstract The Moso bamboo, a renewable green building material used in various new green buildings, have received extensive attention with the promotion of the concept of green buildings. To explore the mechanical properties of Moso bamboo connections with external clamp steel plates, the 16 specimens were designed by changing the bolt diameters and the end distances of the bolt holes. Their static tension tests were conducted to investigate bearing capacities and failure modes of different connection configurations. Based on test results, three failure modes of these connections were obtained, including the shear failure of bolt shank, More > Graphic Abstract

Jingjing Liao^1,2, Jinxing Li², Fuxian Yang², Yan Zhu², Hongyan Wang³, Guanben Du^1,2,*, Hisham Essawy⁴, Xiaojian Zhou^2,*

Journal of Renewable Materials, Vol.10, No.2, pp. 359-372, 2022, DOI:10.32604/jrm.2021.016335 - 30 August 2021

Abstract Polyvinyl alcohol (PVA)-based films containing Chinese bayberry tannin (BT) were prepared by cross-linking using glyoxal, glutaraldehyde and dialdehyde starch, individually. The presence of cross-linkers was evident to promote the transparency and decrease the moisture content of PVA/BT films, while the water solubility stayed almost unchanged in the cross-linked PVA/BT films. All cross-linkers provided promotion of the water vapor permeability, mechanical property and thermal stability of PVA/BT films. The best water vapor barrier capacity was found in case of glutaraldehyde cross-linked PVA/BT film, while the highest tensile strength was encountered in case of glyoxal cross-linked PVA/BT More > Graphic Abstract

Yun Wang¹, Tiantian Wang², Bei Wang¹, Wei Chang³, Jiangli Cao¹, Lihua Hu³, Minxu Lu¹, Lei Zhang^1,*

Journal of Renewable Materials, Vol.10, No.2, pp. 301-327, 2022, DOI:10.32604/jrm.2021.015518 - 30 August 2021

Abstract A novel and effective water-soluble aldehydes (β-HA) as corrosion inhibitor was synthesized for N80 steel corrosion in 15% HCl solution, and the corrosion inhibition performance was evaluated by using weight loss, electrochemical measurements, scanning electron microscope (SEM), quantum chemical calculation and molecular dynamics simulation (MDS). The results show that synthesized β-HA showed excellent corrosion performance compared with MHB and PE for carbon steel in 15% HCl solution compared with MHB and PE, and the inhibition efficiency increased with increasing concentration of the inhibitor. The inhibition efficiency of β-HA at 8 mmol/L reached the maximum value 94.08%. The More >

Kai Su^*, Qirui Qin, Jingyu Yang, Linxiao Li, Shaoqi Deng

Journal of Renewable Materials, Vol.10, No.2, pp. 247-261, 2022, DOI:10.32604/jrm.2022.018146 - 30 August 2021

Abstract With the increase of global proportion of soil pollution and the number of areas at risk, researchers have sought to develop various pathways to repair or relieve the pollutants in soil. Among them, biochar represents one multidimensional soil amendment which has got great deal of attention on its physicochemical properties towards the removal or mitigation of contaminants in soil. A variety of agricultural wastes like straw and manure prepared from different torrefaction process have been employed as feedstock for the production of biochar, which can be applied to the contaminated soil to facilitate the growing… More >

Ting Wang¹, Zhiqiang Wang^1,*, Yin Yang¹, Jianhui Zhou^2,*

Journal of Renewable Materials, Vol.10, No.2, pp. 527-540, 2022, DOI:10.32604/jrm.2022.017955 - 30 August 2021

Abstract The acoustic emission (AE) technique can perform non-destructive monitoring of the internal damage development of bamboo and wood materials. In this experiment, the mechanical properties of different bamboo and wood (bamboo scrimber, bamboo plywood and SPF (Spruce-pine-fir) dimension lumber) during four-point loading tests were compared. The AE activities caused by loadings were investigated through the single parameter analysis and K-means cluster analysis. Results showed that the bending strength of bamboo scrimber was 3.6 times that of bamboo plywood and 2.7 times that of SPF dimension lumber, respectively. Due to the high strength and toughness of… More > Graphic Abstract

Saad Nader^1,2, Felipe Guzman³, Raphael Becar¹, César Segovia⁴, Cecilia Fuentealba³, Miguel Peirera³, Evelyne Mauret², Nicolas Brosse^1,*

Journal of Renewable Materials, Vol.10, No.2, pp. 263-271, 2022, DOI:10.32604/jrm.2022.017923 - 30 August 2021

Abstract The reinforcing impact of Lignocellulosic micro and nanofibrillated cellulose (L-MNFCs) obtained from Eucalyptus Globulus bark in Urea-Formaldehyde UF adhesive was tested. L-MNFCs were prepared by an environmentally friendly, low-cost process using a combination process involving steam explosion followed by refining and ultra-fine grinding. Obtained L-MNFCs showed a web-like morphology with some aggregates and lignin nanodroplets. They present a mixture of residual fibers and fine elements with a width varying between 5 nm to 20 μm, respectively. The effects of the addition of low amounts of L-MNFCs (1% wt.) on the properties of three different adhesives (Urea-Formaldehyde UF, Phenol-Formaldehyde More > Graphic Abstract

Kaihan Xie¹, Yamin Hu^1,*, Stephen Afonaa-Mensah², Chuan Yuan¹, Bin Cao¹, Shuang Wang^1,*, Qian Wang¹

Journal of Renewable Materials, Vol.10, No.2, pp. 541-560, 2022, DOI:10.32604/jrm.2022.017911 - 30 August 2021

Abstract Use Enteromorpha clathrate as a carbon and nitrogen precursor could obtain the N-doped porous carbon materials by two-step pyrolysis. In this paper, the exogenous nitrogen (urea, melamine) and activating agents (KOH, ZnCl₂) were employed for the production of higher-performance carbon materials from seaweed biomass. SEM, BET, FTIR, XRD, XPS, Raman and ultimate analyses were carried out to investigate the morpho-structural and elemental peculiarities of the carbonaceous materials. Moreover, cyclic voltammetry (CV) , galvanostatic charge-discharge (GCD) and cyclic charge-discharge tests were carried out to examine the electrochemical properties of the samples. The results showed that electrochemical performance of… More > Graphic Abstract

Hamed Younesi-Kordkheili^1,*, Antonio Pizzi²

Journal of Renewable Materials, Vol.10, No.2, pp. 237-246, 2022, DOI:10.32604/jrm.2022.017851 - 30 August 2021

Abstract The aim of this research was to investigate the effect of ionic liquid treated lignin-based polyacid as a catalyst for urea-formaldehyde (UF) resins. Esterification of lignin was carried out, without any catalyst, with anhydride maleic and 1-butyl-3-methylimidazolium hydrogen sulfate [Bmim][HSO₄] as acidic ionic liquid to form maleated lignin-based polyacids (MA-IL). The performance of MA-IL as UF resin catalyst was respectively compared to hyroxymethylated lignin-based polyacid (MA-HL) and to NH₄Cl. The FTIR analysis indicated that the proportion of -COOH and C-O bonds increased due to the esterification of lignin with ionic liquid rather than its hyroxymethylation. Physicochemical… More >