Lightweight and flexible sensors based on environmental- friendly poly(butylene adipate-co-terephthalate) composite foams with porous segregated conductive networks

Yang Jingbo; Ding Mingqi; Cai WenruiXu DaweiPark Chul B. B.

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Lightweight and flexible sensors based on environmental- friendly poly(butylene adipate-co-terephthalate) composite foams with porous segregated conductive networks

机译：Lightweight and flexible sensors based on environmental- friendly poly(butylene adipate-co-terephthalate) composite foams with porous segregated conductive networks

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Constructing the microcellular structure in the conductive polymer composites (CPCs) is a promising approach to improve the sensitivity and durability of the piezoresistive sensor. Selectively placing the conductive fillers, to form the segregated network between the polymer region, can effectively improve the electric performance of CPCs. However, few researches have focused on the influence of the polymer bead size on the segregated network and the largescale production of spherical polymer beads with low cost is still difficult to realize. Herein, plenty of regular-shaped poly(butylene adipate-co-terephthalate) (PBAT) beads were manufactured through underwater pelletizing process, which was further coated with carbon nanotube (CNT) particles with the assistance of ball milling technology, and eventually the sensor was successfully fabricated through supercritical carbon dioxide (scCO2) bead foaming technology. The lightweight and flexible sensor exhibited the uniform cell structure with the mean cell size of 51.0 mu m and cell density of 3.9 x 108 cells/cm(3) when the pelletizing cutter speed was 2500 rpm and the foaming temperature was 117.5 degrees C. And the conductivity of the sensor reached 6.5 S/m incorporated with 3 wt CNT, which possessed high sensitivity, good stability and long-term durability, attributed to its excellent microcellular structure and segregated conductive network.

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来源
《Journal of Applied Polymer Science》 |2023年第6期|共10页
作者
Yang Jingbo; Ding Mingqi; Cai WenruiXu DaweiPark Chul B. B.;
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作者单位

Sichuan Univ;

Univ Toronto;

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原文格式 PDF
正文语种英语
中图分类高分子化合物工业（高聚物工业）;
关键词
conductive polymer composites; microcellular structure; supercritical carbon dioxide bead foaming; underwater pelletizing; POLYMER COMPOSITES; STRAIN SENSORS; PRESSURE; PERFORMANCE;

Lightweight and flexible sensors based on environmental- friendly poly(butylene adipate-co-terephthalate) composite foams with porous segregated conductive networks

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