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Design and preparation of a crosslinkable,oil-resistant,and bio-based elastomer from fumarate

Science China Chemistry 2024年第2期67卷 622-631页

作者： Hui Yang Haijun Ji Xinxin Zhou Shihan Yang Liwei Li Chaoying Sun Weiwei Lei Runguo Wang Liqun Zhang Beijing State Key Laboratory of Organic-Inorganic Composites&Beijing Laboratory of biomedical Materials Beijing University of Chemical TechnologyBeijing100029China Hubei Key Laboratory of Polymer Materials Faculty of Materials Science and EngineeringHubei UniversityWuhan430062China

Poly(diethyl fumarate-co-methoxyethyl acrylate-co-vinyl chloroacetate)(PDEFMV),a novel bio-based elastomer with a saturated structure,was synthesized via redox emulsion *** glass-transition temperatures of PDEFMV,adjusted through the variation of the diethyl fumarate-to-methoxyethyl acrylate feeding ratio,ranged from-36.1 to-14.8 ℃.The number-average molecular weights of PDEFMV ranged from 384,000 to 46,000 g/*** designing the molecular structure,vinyl chloroacetate was used to provide active sites for subsequent vulcanization and *** active chlorine groups within the PDEFMV chain reacted with the crosslinking agent trithiocyanuric acid under high temperature and pressure to form a nonsulfur crosslinked three-dimensional network *** achieve the desired properties,carbon black(CB,N330) was incorporated to reinforce PDEFMV,leading to the formation of PDEFMV/CB composites.A comprehensive study was conducted on the high-temperature oil resistance of PDEFMV/CB *** immersion in IRM903 oil at temperatures of 150 and 200 ℃ for 72 h,the mass and volume changes in PDEFMV/CB were lower than those observed in commercially available acrylate rubber(AR)/CB,indicating that PDEFMV exhibited superior oil ***,the aging characteristics and mechanisms of oil resistance in the PDEFMV/CB and AR/CB composites were investigated at different temperatures(150,200,and 250 ℃).The results provide insights into the operational temperature ranges suitable for PDEFMV/CB and offer valuable guidance for potential industrial applications.

关键词： diethyl fumarate molecular design bio-based elastomer solvent-free synthetic route high-temperature oil resistance

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Design and synthesis by redox polymerization of a bio-based carboxylic elastomer for green tire

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Science China Chemistry 2015年第10期58卷 1561-1569页

作者： Xinxin Zhou Runguo Wang Weiwei Lei He Qiao Haoling Ji Liqun Zhang Kuo-Chih Hua Joseph Kulig State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Key Laboratory of Beijing City for Preparation and Processing of Novel Polymer Materials Beijing Laboratory of biomedical Materials Goodyear Innovation Center Goodyear Tire & Rubber Company

Poly(dibutyl itaconate-co-isoprene-co-methacrylic acid)(PDIM) elastomer was designed and synthesized by redox emulsion polymerization under mild conditions. PDIM has high molecular weight, relatively high yield, and low glass transition temperature(Tg). The structure of PDIM was determined by FTIR and NMR, and the carboxyl content was obtained by titration in a non-proton solvent. Tensile strength and elongation at break increased with increasing carboxyl content. In addition, the interaction between PDIM and silica was elucidated by rubber process analyzer(RPA) and TEM, and the results showed that the silica-PDIM interaction was strong, but the silica-silica interaction was weak.

关键词： carboxylic rubber bio-based elastomer synthesis redox polymerozation green tire

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Topological network design toward high-performance vegetable oil-based elastomers

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SusMat 2023年第3期3卷 320-333页

作者： Shuangjian Yu Yeqing Li Siwu Wu Zhenghai Tang Liqun Zhang Baochun Guo Institute of Emergent elastomers School of Materials Science and EngineeringSouth China University of TechnologyGuangzhouChina State Key Laboratory of Organic/Inorganic Composites Beijing University of Chemical TechnologyBeijingChina

As a kind of bio-derived feedstock,vegetable oil(VO)shows great potential to replace petroleum-based monomers to develop sustainable polymer materials because of its easy availability,low cost,bio-renewable,and environmentally friendly ***,due to the high cross-linking density and amorphous nature,directly cured VOs generally tend to be brittle and *** date,it is still difficult to adopt VOs and their derivatives as structural materials to prepare high-performance *** address this important issue,amulti-scale topology design strategy was proposed in this ***,topology regulation and functionalization of VO-based networks were realized by managing functional groups proportion during the bulk polymerization of epoxidized soybean oil with dimer fatty ***,a second polymer(SN)network was introduced into the VO-based network as a protective layer via interfacial *** generated VO-based elastomers(VOEs)exhibit unprecedented comprehensive properties(VO content≥70 wt.%,T_(g)as low as−24.4℃,toughness up to 6.8 MJ/m^(3)).Besides,the VOEs also exhibit excellent reprocessability and self-healing ***,this work developed a novel kind of VOEs with significant comprehensive advantages and provided important inspiration for the preparation of high-performance elastomers throughmulti-scale topology regulation.

关键词： bio-based elastomer dual-network recycling topological network vegetable oil

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