淀粉
增塑剂
环氧化大豆油
大豆油
溶剂
玻璃化转变
蓖麻油
材料科学
有机化学
化学工程
回生(淀粉)
化学
聚合物
高分子化学
原材料
食品科学
直链淀粉
工程类
作者
Chang Li,Benzhi Ju,Shufen Zhang
标识
DOI:10.1016/j.carbpol.2022.120442
摘要
Catalyst-free fully bio-based hydroxyester (BHE) vitrimers were synthesized by crosslinking and plasticizing epoxidized soybean oil with synthesized acetylated starch succinate monoesters to investigate the effects of different starch structures on the properties of the BHE vitrimers. The BHE vitrimers possessed a lower glass transition temperature as well as better solvent resistance and reprocessing performance compared to traditional starch-based materials. Owing to dynamically covalent bonds, the migration and exudation of plasticizers were avoided. A maximum strain of 230 % was achieved to prevent the retrogradation and brittleness of starch-based materials. Furthermore, the mechanical properties remained unchanged after three reprocessing cycles. Consequently, the obtained BHE vitrimers are eco-friendly and sustainable.
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