Integration of metal-free ATRP and Diels-Alder reaction toward sustainable and recyclable cellulose-based thermoset elastomers

编号 020025805

推送时间 20200928

研究领域 林产化工 

年份 2020 

类型 期刊 

语种 英语

标题 Integration of metal-free ATRP and Diels-Alder reaction toward sustainable and recyclable cellulose-based thermoset elastomers

来源期刊 CARBOHYDRATE POLYMERS

期 第258期

发表时间 20200513

关键词 Cellulose;  Photoinduced metal free ATRP;  Recyclability;  Shape memory;  Self-healing;  Thermoset elastomer; 

摘要 Well-defined sustainable and recyclable thermoset elastomers derived from cellulose, fatty acid and furfural were successfully prepared via photoinduced metal-free ATRP and Diels-Alder (DA) reaction. Firstly, metal free ATRP was applied to prepare a range of thermoplastic cellulose graft copolymers with furfural groups. Then, a modified epoxidized soybean oil bearing 6-maleimidohexanoic group (ESOM) as a crosslinker was employed to perform DA reaction with furfural groups in these cellulose graft copolymers, by which the copolymer formed the dynamic crosslinked network and achieved the thermoset elastomers. The dynamic crosslinked network formed by DA reaction not only could increase the chain entanglement that was associated with the improved flexibility and could contribute to enhancing the mechanical strength up to 166 %, but also endowed these thermoset elastomers with recyclability, excellent shape memory and self-healing property. These thermoset elastomers can be used as self-healing strain sensor and wearable sensing devices after compounding them with carbon nanotubes.

服务人员 尚玮姣

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