Yongde Luo, Jiang Jin^*, Hua Zhang^*

Journal of Renewable Materials, Vol.11, No.7, pp. 3143-3153, 2023, DOI:10.32604/jrm.2023.027396 - 05 June 2023

Abstract A hybrid system combined with a non-contact membrane and bubbling absorption is proposed to capture CO₂ from flue gas. The non-contact way of membrane and liquid absorbent effectively avoids the reduction of gas diffusion flux through the membrane. High-porosity ceramic membranes in hybrid systems are used for gas-solid separation in fuel gas treatment. Due to the high content of H₂O and cement dust in the flue gas of the cement plant, the membrane is hydrophobically modified by polytetrafluoroethylene (PTFE) to improve its anti-water, anti-fouling, and self-cleaning performances. The results show that the diffusion flux of CO₂ through More >

Xuyang Yao^1,*, Kecheng Liu¹, Zenan Zhou¹, Jun Zhou¹, Xianbin Huang², Tiemei Lu¹, Yongsheng Yu¹, He Li²

FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.7, pp. 1775-1787, 2023, DOI:10.32604/fdmp.2023.025843 - 08 March 2023

Abstract Water-based drilling fluids can cause hydration of the wellbore rocks, thereby leading to instability. This study aimed to synthesize a hydrophobic small-molecule polymer (HLMP) as an inhibitor to suppress mud shale hydration. An infrared spectral method and a thermogravimetric technique were used to characterize the chemical composition of the HLMP and evaluate its heat stability. Experiments were conducted to measure the linear swelling, rolling recovery rate, and bentonite inhibition rate and evaluate accordingly the inhibition performance of the HLMP. Moreover, the HLMP was characterized through measurements of the zeta potential, particle size distribution, contact angles,… More > Graphic Abstract

Mohammed Albuaymi¹, Suleiman Abdulrahman^2,3, Fayez Alanazi⁴, Hani Alanazi^1,*, Musa Adamu^5,6

Journal of Renewable Materials, Vol.11, No.5, pp. 2433-2451, 2023, DOI:10.32604/jrm.2023.026751 - 13 February 2023

Abstract Pure bitumen is not suitable for heavy traffic loads; hence modifiers are used to improve the bitumen performance. Recently, cup lump rubber (CLR) has become a preferred modifier due to its outstanding performance and less cost. However, little is known about the interactions between CLR and bitumen. Thus, this study investigates the behavior of bitumen with CLR. Four percentages of CLR (2.5%, 5.0%, 7.5%, and 10.0% by weight of bitumen) were used to modify conventional 60/70 penetration grade bitumen. The modified bitumen was evaluated through different laboratory testing such as dynamic shear rheometer, rotational viscosity,… More >

Felipe Mercês Biglia¹, Raquel da Cunha Ribeiro da Silva², Fátima de Moraes Lino³, Kamal Abdel Radi Ismail³, Thiago Antonini Alves^4,*

Energy Engineering, Vol.119, No.5, pp. 1771-1788, 2022, DOI:10.32604/ee.2022.019625 - 21 July 2022

Abstract The frost growth on cold surfaces in evaporators is an undesirable phenomenon which becomes a problem for the thermal efficiency of the refrigeration systems because the ice layer acts as a thermal insulation, drastically reducing the rate of heat transfer in the system. Its accumulation implies an increase in energy demand and a decrease in the performance of various components involved in the refrigeration process, reducing its efficiency and making it necessary to periodically remove the frost, resulting in expenses for the defrost process. In the present work, a numerical-experimental analysis was performed in order… More >

Shun Kang¹, Xun Yuan¹, Changwu Liu^1,*, Yulin Chen¹, Xianliang Zhou¹, Haikuan Wu², Zhiguo Ma³

Journal of Renewable Materials, Vol.10, No.12, pp. 3521-3538, 2022, DOI:10.32604/jrm.2022.021694 - 14 July 2022

Abstract Part of the tunnel spoil can not be used for concrete due to alkali-aggregate reaction (AAR). Water is an indispensable condition for AAR, so separating the alkali-aggregate from water is of great benefit to controlling the AAR. This paper investigates the modification of concrete and aggregate by hydrophobic impregnation and organic coating and then evaluates their waterproof and mechanical properties by dynamic contact angle (DCA), ultrasonic wave velocity, scanning electron microscope (SEM), nuclear magnetic resonance (NMR), and so on. For waterproofness, hydrophobic impregnation and organic coating can both improve the waterproofness of concrete and aggregate.… More >

Muzi Liao^1,2,#, Hui Tong^1,2,#, Xiangya Huang^1,2, Fang Liu³, Jingwei He^3,*, Sui Mai^1,2,*

Journal of Renewable Materials, Vol.10, No.12, pp. 3201-3215, 2022, DOI:10.32604/jrm.2022.022090 - 14 July 2022

Abstract Novel branched silicone methacrylate was developed. The mechanical and biological properties of the resin system were investigated to select the formula proportion with the best overall performance. The novel silicone-containing monomers were combined with an incremental sequence of glass filler concentrations in commonly used Bis-GMA/TEGDMA (50/50, wt./wt.) dental resin systems. Physicochemical properties, surface properties, antibacterial adhesion effect, anti-biofilm effect, protein adsorption, and cytotoxicity were evaluated. The results showed that BSMs did not affect the double bond conversion of dental resin, but could reduce volumetric shrinkage (p < 0.05). The BSM containing resins can resist protein and… More >

Jianxin Cui^1,#, Zehui Ju^1,#, Lu Hong², Biqing Shu^1,3, Xiaoning Lu^1,*

Journal of Renewable Materials, Vol.10, No.11, pp. 2907-2919, 2022, DOI:10.32604/jrm.2022.019270 - 29 June 2022

Abstract In order to improve hydrophobic characteristics which will affect the service performance of fast-growing poplar due to growing bacteria in the humid environment. In this study, a simple method was proposed to treat poplar via the high voltage electric field (HVEF) with copper as the electrode plate. Scanning electron microscope (SEM), Fourier transforms infrared spectroscopy (FTIR), X-ray diffraction (XRD) and contact angle tester were adopted to evaluate the surface morphology, surface group of poplar, crystallinity and wettability under HVEF. It was found by SEM that a large number of copper particles were uniformly attached to More >

Jiakun Shi¹, Bizhu Zhang¹, Xin Zhou¹, Runxian Liu¹, Jun Hu^1,2,*, Huaan Zheng¹, Zhong Chen^3,*

Journal of Renewable Materials, Vol.10, No.5, pp. 1239-1255, 2022, DOI:10.32604/jrm.2022.018045 - 22 December 2021

Abstract As a passive anti-icing strategy, properly designed superhydrophobic coatings can demonstrate outstanding performances. However, common preparation strategies for superhydrophobic coatings often lead to environmental pollution, high energy-consumption, high-cost and other undesirable issues. Besides, the durability of superhydrophobic coating also plagues its commercial application. In this paper, we introduced a facile and environment-friendly technique for fabricating abrasion-resistant superhydrophobic surfaces using thermoplastic polyurethane (TPU) and modified SiO₂ particles (SH-SiO₂). Both materials are non-toxicity, low-cost, and commercial available. Our methodology has the following advantages: use of minimal amounts of formulation, take the most streamlined technical route, and no waste… More > Graphic Abstract

Peng Liu, Bin Bai, Cui Wang, Yunan Chen, Zhiwei Ge, Wenwen Wei, Hui Jin^*

Journal of Renewable Materials, Vol.9, No.12, pp. 2159-2174, 2021, DOI:10.32604/jrm.2021.016166 - 22 June 2021

Abstract In this paper, a simple method to plate a hydrophobic coating on the inner surface of a small-scaled tube was proposed, where the coating consisted of carbon microspheres. Three common plastics polystyrene, polycarbonate and polyethylene were used as the feedstocks to be processed in supercritical water in a quartz tubular reactor. After reaction, the contact angle of droplet on the inner surface of the quartz tube was turned out to be over 100°, significantly larger than that of the blank tube 54°. When processing polystyrene in the 750C supercritical water for 10 min, the largest… More > Graphic Abstract

Cong Qi^*, Yuxing Wang, Zi Ding, Jianglin Tu, Mengxin Zhu

Energy Engineering, Vol.118, No.4, pp. 825-852, 2021, DOI:10.32604/EE.2021.014806 - 31 May 2021

Abstract Boiling heat transfer is a mode using the phase change of working medium to strengthen the heat exchange due to its good heat exchange capability, and it is widely used in heat exchange engineering. Nanofluids have been used in the direction of enhanced heat transfer for their superior thermophysical property. The wetting, spreading and ripple phenomena of superhydrophobic surfaces widely exist in nature and daily life. It has great application value for engineering technology. In this article, the boiling heat exchange characteristics of nanofluids on superhydrophobic surface are numerically studied. It was found that with… More >