Electrically conductive and light-weight branched polylactic acid-based carbon nanotube foams

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-...

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Main Authors:	Liu Wei, Wu Xian, Ou Yangjia, Liu Hao, Zhang Chun
Format:	article
Language:	EN
Published:	De Gruyter 2021
Subjects:	foams biopolymers branched nanofibers conducting polymers Polymers and polymer manufacture TP1080-1185
Online Access:	https://doaj.org/article/1706f275c4024086a5995bf65d5b0604
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spelling	oai:doaj.org-article:1706f275c4024086a5995bf65d5b06042021-12-05T14:10:47ZElectrically conductive and light-weight branched polylactic acid-based carbon nanotube foams1618-722910.1515/epoly-2021-0013https://doaj.org/article/1706f275c4024086a5995bf65d5b06042021-01-01T00:00:00Zhttps://doi.org/10.1515/epoly-2021-0013https://doaj.org/toc/1618-7229In 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/cm3 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 × 104 Ω/m. The proposed foaming materials provided a way for designing and preparing high performance CNT products.Liu WeiWu XianOu YangjiaLiu HaoZhang ChunDe Gruyterarticlefoamsbiopolymersbranchednanofibersconducting polymersPolymers and polymer manufactureTP1080-1185ENe-Polymers, Vol 21, Iss 1, Pp 96-107 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	foams biopolymers branched nanofibers conducting polymers Polymers and polymer manufacture TP1080-1185
spellingShingle	foams biopolymers branched nanofibers conducting polymers Polymers and polymer manufacture TP1080-1185 Liu Wei Wu Xian Ou Yangjia Liu Hao Zhang Chun Electrically conductive and light-weight branched polylactic acid-based carbon nanotube foams
description	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/cm3 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 × 104 Ω/m. The proposed foaming materials provided a way for designing and preparing high performance CNT products.
format	article
author	Liu Wei Wu Xian Ou Yangjia Liu Hao Zhang Chun
author_facet	Liu Wei Wu Xian Ou Yangjia Liu Hao Zhang Chun
author_sort	Liu Wei
title	Electrically conductive and light-weight branched polylactic acid-based carbon nanotube foams
title_short	Electrically conductive and light-weight branched polylactic acid-based carbon nanotube foams
title_full	Electrically conductive and light-weight branched polylactic acid-based carbon nanotube foams
title_fullStr	Electrically conductive and light-weight branched polylactic acid-based carbon nanotube foams
title_full_unstemmed	Electrically conductive and light-weight branched polylactic acid-based carbon nanotube foams
title_sort	electrically conductive and light-weight branched polylactic acid-based carbon nanotube foams
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/1706f275c4024086a5995bf65d5b0604
work_keys_str_mv	AT liuwei electricallyconductiveandlightweightbranchedpolylacticacidbasedcarbonnanotubefoams AT wuxian electricallyconductiveandlightweightbranchedpolylacticacidbasedcarbonnanotubefoams AT ouyangjia electricallyconductiveandlightweightbranchedpolylacticacidbasedcarbonnanotubefoams AT liuhao electricallyconductiveandlightweightbranchedpolylacticacidbasedcarbonnanotubefoams AT zhangchun electricallyconductiveandlightweightbranchedpolylacticacidbasedcarbonnanotubefoams
_version_	1718371704682577920

Electrically conductive and light-weight branched polylactic acid-based carbon nanotube foams

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