文献类型：期刊文献

英文题名：Electrically conductive and light-weight branched polylactic acid-based carbon nanotube foams

作者：Liu, Wei Wu, Xian Ou, Yangjia Liu, Hao Zhang, Chun

第一作者：刘伟

通信作者：Zhang, C[1]|[14440f6a6d277849ce3bf]张纯;

机构：[1]Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang 550003, Peoples R China

第一机构：贵州理工学院

通信机构：corresponding author), Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang 550003, Peoples R China.|贵州理工学院;

年份：2021

卷号：21

期号：1

起止页码：96-107

外文期刊名：E-POLYMERS

收录：;EI(收录号：20210609899718);Scopus(收录号：2-s2.0-85100492906);WOS:【SCI-EXPANDED(收录号:WOS:000616377100001)】；

基金：This work was supported by National Natural Science Foundation of China (51703039) and Foundation of Guizhou Scientific Research Institute (QianKeFuQi [2018] 4010).

语种：英文

外文关键词：foams; biopolymers; branched; nanofibers; conducting polymers

摘要：In spite of the high electrical conductivity of carbon nanotube (CNT), its tendency to aggregate and expensive cost in fabricating aerogel, foams, and porous materials remains a problem. Therefore, we described a simple and feasible way to design light-weight, high electrically conductive, and cost-efficient polylactic acid (PLA)/CNT foams. The branched PLA (BPLA) resin with excellent melt elasticity and foamability was induced by nucleophilic ring-opening reaction of epoxy-based acrylic/styrene copolymer and PLA. After that, BPLA/CNT composites and foams were prepared by melt-mixing and supercritical carbon dioxide foaming technology, respectively. The thermal, electrical, and foaming properties were studied. The resultant BPLA/CNT foam possessed a low density of 0.174 g/cm(3) and high crystallinity of 3.03%. An improvement of the oriented structure of CNT induced by cell growth in BPLA matrix increased the conductivity of the foam up to 3.51 x 10(4) Omega/m. The proposed foaming materials provided a way for designing and preparing high performance CNT products.