Chemically circular, mechanically tough, and melt-processable polyhydroxyalkanoates
Chemically circular, mechanically tough, and melt-processable polyhydroxyalkanoates
复制标题
化学循环、机械坚韧且可熔融加工的聚羟基链烷酸酯
DOI:
10.1126/science.adg4520
复制
发表时间:
2023
期刊:
影响因子:
56.9
通讯作者:
Chen, Eugene Y.-X.
中科院分区:
文献类型:
--
作者:
Zhou, Li;Zhang, Zhen;Shi, Changxia;Scoti, Miriam;Barange, Deepak K.;Gowda, Ravikumar R.;Chen, Eugene Y.-X.
Polyhydroxyalkanoates (PHAs) have attracted increasing interest as sustainable plastics because of their biorenewability and biodegradability in the ambient environment. However, current semicrystalline PHAs face three long-standing challenges to broad commercial implementation and application: lack of melt processability, mechanical brittleness, and unrealized recyclability, the last of which is essential for achieving a circular plastics economy. Here we report a synthetic PHA platform that addresses the origin of thermal instability by eliminating α-hydrogens in the PHA repeat units and thus precluding facile cis-elimination during thermal degradation. This simple α,α-disubstitution in PHAs enhances the thermal stability so substantially that the PHAs become melt-processable. Synergistically, this structural modification also endows the PHAs with the mechanical toughness, intrinsic crystallinity, and closed-loop chemical recyclability.
登录
查看更多内容
影响因子:
56.9
作者:
Zhu, Jian-Bo;Watson, Eli M.;Chen, Eugene Y. -X.
通讯作者:
Chen, Eugene Y. -X.
影响因子:
16.6
作者:
Tang X;Chen EY
通讯作者:
Chen EY
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
Marc Brestaz;N. Desilles;Guillaume Lê;C. Bunel
通讯作者:
C. Bunel
影响因子:
--
作者:
Jinchao Yang;J. Yang;Wen;Xiao‐Bing Lu;Ye Liu
通讯作者:
Ye Liu
影响因子:
6.4
作者:
Lang K;Zierow J;Buehler K;Schmid A
通讯作者:
Schmid A