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热可切换导电热固性rGO/PK自修复复合材料

Thermally Switchable Electrically Conductive Thermoset rGO/PK Self-Healing Composites.

作者信息

Araya-Hermosilla Esteban, Giannetti Alice, Lima Guilherme Macedo R, Orozco Felipe, Picchioni Francesco, Mattoli Virgilio, Bose Ranjita K, Pucci Andrea

机构信息

Center for Micro-BioRobotics, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, Pontedera, 56025 Pisa, Italy.

Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, 56124 Pisa, Italy.

出版信息

Polymers (Basel). 2021 Jan 21;13(3):339. doi: 10.3390/polym13030339.

DOI:10.3390/polym13030339
PMID:33494537
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7865638/
Abstract

Among smart materials, self-healing is one of the most studied properties. A self-healing polymer can repair the cracks that occurred in the structure of the material. Polyketones, which are high-performance thermoplastic polymers, are a suitable material for a self-healing mechanism: a furanic pendant moiety can be introduced into the backbone and used as a diene for a temperature reversible Diels-Alder reaction with bismaleimide. The Diels-Alder adduct is formed at around 50 °C and broken at about 120 °C, giving an intrinsic, stimuli-responsive self-healing material triggered by temperature variations. Also, reduced graphene oxide (rGO) is added to the polymer matrix (1.6-7 wt%), giving a reversible OFF-ON electrically conductive polymer network. Remarkably, the electrical conductivity is activated when reaching temperatures higher than 100 °C, thus suggesting applications as electronic switches based on self-healing soft devices.

摘要

在智能材料中，自修复是研究最多的特性之一。自修复聚合物可以修复材料结构中出现的裂缝。聚酮作为高性能热塑性聚合物，是一种适用于自修复机制的材料：可以将呋喃侧基部分引入主链，并用作与双马来酰亚胺发生温度可逆狄尔斯-阿尔德反应的二烯。狄尔斯-阿尔德加合物在约50°C形成，在约120°C分解，从而产生一种由温度变化触发的固有、刺激响应型自修复材料。此外，将还原氧化石墨烯（rGO）添加到聚合物基体中（1.6-7 wt%），得到一种可逆的关-开导电聚合物网络。值得注意的是，当温度高于100°C时，电导率被激活，因此表明可应用于基于自修复软器件的电子开关。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/caa6/7865638/2d832458bad2/polymers-13-00339-g013.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/caa6/7865638/d3db63e5091a/polymers-13-00339-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/caa6/7865638/31703a398bb2/polymers-13-00339-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/caa6/7865638/208da9469867/polymers-13-00339-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/caa6/7865638/ffd4a895e8bc/polymers-13-00339-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/caa6/7865638/e5f5d2f80c34/polymers-13-00339-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/caa6/7865638/8ab2f5d7d9bc/polymers-13-00339-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/caa6/7865638/2d832458bad2/polymers-13-00339-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/caa6/7865638/a8399f2aa25d/polymers-13-00339-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/caa6/7865638/3fb520b7d19d/polymers-13-00339-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/caa6/7865638/b1c207beec6b/polymers-13-00339-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/caa6/7865638/88435ead72ef/polymers-13-00339-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/caa6/7865638/1bd4ba07d6be/polymers-13-00339-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/caa6/7865638/801d3c41d258/polymers-13-00339-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/caa6/7865638/d3db63e5091a/polymers-13-00339-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/caa6/7865638/31703a398bb2/polymers-13-00339-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/caa6/7865638/208da9469867/polymers-13-00339-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/caa6/7865638/ffd4a895e8bc/polymers-13-00339-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/caa6/7865638/e5f5d2f80c34/polymers-13-00339-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/caa6/7865638/8ab2f5d7d9bc/polymers-13-00339-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/caa6/7865638/2d832458bad2/polymers-13-00339-g013.jpg

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