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  • Open Access


    Rheological and Morphological Characterization of Modified Bitumen with Cup Lump Rubber

    Mohammed Albuaymi1, Suleiman Abdulrahman2,3, Fayez Alanazi4, Hani Alanazi1,*, Musa Adamu5,6

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

    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, softening point, bending beam rheometer,… More >

  • Open Access


    Mechanical Properties, Biocompatibility and Anti-Bacterial Adhesion Property Evaluation of Silicone-Containing Resin Composite with Different Formulae

    Muzi Liao1,2,#, Hui Tong1,2,#, Xiangya Huang1,2, Fang Liu3, Jingwei He3,*, Sui Mai1,2,*

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

    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 bacteria adhesion (S. Mutans)… More >

  • Open Access


    Experimental Investigation on Hydrophobic Behavior of Carbon Spheres Coated Surface Made from Microplastics

    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

    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 contact angle was obtained, up… More > Graphic Abstract

    Experimental Investigation on Hydrophobic Behavior of Carbon Spheres Coated Surface Made from Microplastics

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