Hybrid Nanocomposites of Cellulose/Carbon-Nanotubes/Polyurethane with Rapidly Water Sensitive Shape Memory Effect and Strain Sensing Performance
In this work, a fast water-responsive shape memory hybrid polymer based on thermoplastic polyurethane (TPU) was prepared by crosslinking with hydroxyethyl cotton cellulose nanofibers (CNF-C) and multi-walled carbon nanotubes (CNTs). The effect of CNTs content on the electrical conductivity of TPU/CN...
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doaj-ada41d0eb4ac4631896949da4d71fd902020-11-25T00:10:07ZengMDPI AGPolymers2073-43602019-09-011110158610.3390/polym11101586polym11101586Hybrid Nanocomposites of Cellulose/Carbon-Nanotubes/Polyurethane with Rapidly Water Sensitive Shape Memory Effect and Strain Sensing PerformanceGuanzheng Wu0Yanjia Gu1Xiuliang Hou2Ruiqing Li3Huizhen Ke4Xueliang Xiao5Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi 214122, ChinaKey Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi 214122, ChinaKey Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi 214122, ChinaKey Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi 214122, ChinaFujian Key Laboratory of Novel Functional Textile Fibers and Materials, Minjiang University, Fuzhou 350108, ChinaKey Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi 214122, ChinaIn this work, a fast water-responsive shape memory hybrid polymer based on thermoplastic polyurethane (TPU) was prepared by crosslinking with hydroxyethyl cotton cellulose nanofibers (CNF-C) and multi-walled carbon nanotubes (CNTs). The effect of CNTs content on the electrical conductivity of TPU/CNF-C/CNTs nanocomposite was investigated for the feasibility of being a strain sensor. In order to know its durability, the mechanical and water-responsive shape memory effects were studied comprehensively. The results indicated good mechanical properties and sensing performance for the TPU matrix fully crosslinked with CNF-C and CNTs. The water-induced shape fixity ratio (<i>R<sub>f</sub></i>) and shape recovery ratio (<i>R<sub>r</sub></i>) were 49.65% and 76.64%, respectively, indicating that the deformed composite was able to recover its original shape under a stimulus. The TPU/CNF-C/CNTs samples under their fixed and recovered shapes were tested to investigate their sensing properties, such as periodicity, frequency, and repeatability of the sensor spline under different loadings. Results indicated that the hybrid composite can sense large strains accurately for more than 10<sup>3</sup> times and water-induced shape recovery can to some extent maintain the sensing accuracy after material fatigue. With such good properties, we envisage that this kind of composite may play a significant role in developing new generations of water-responsive sensors or actuators.https://www.mdpi.com/2073-4360/11/10/1586hybrid nanocompositesrapid recoverysharp memory polymerstrain sensor |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Guanzheng Wu Yanjia Gu Xiuliang Hou Ruiqing Li Huizhen Ke Xueliang Xiao |
spellingShingle |
Guanzheng Wu Yanjia Gu Xiuliang Hou Ruiqing Li Huizhen Ke Xueliang Xiao Hybrid Nanocomposites of Cellulose/Carbon-Nanotubes/Polyurethane with Rapidly Water Sensitive Shape Memory Effect and Strain Sensing Performance Polymers hybrid nanocomposites rapid recovery sharp memory polymer strain sensor |
author_facet |
Guanzheng Wu Yanjia Gu Xiuliang Hou Ruiqing Li Huizhen Ke Xueliang Xiao |
author_sort |
Guanzheng Wu |
title |
Hybrid Nanocomposites of Cellulose/Carbon-Nanotubes/Polyurethane with Rapidly Water Sensitive Shape Memory Effect and Strain Sensing Performance |
title_short |
Hybrid Nanocomposites of Cellulose/Carbon-Nanotubes/Polyurethane with Rapidly Water Sensitive Shape Memory Effect and Strain Sensing Performance |
title_full |
Hybrid Nanocomposites of Cellulose/Carbon-Nanotubes/Polyurethane with Rapidly Water Sensitive Shape Memory Effect and Strain Sensing Performance |
title_fullStr |
Hybrid Nanocomposites of Cellulose/Carbon-Nanotubes/Polyurethane with Rapidly Water Sensitive Shape Memory Effect and Strain Sensing Performance |
title_full_unstemmed |
Hybrid Nanocomposites of Cellulose/Carbon-Nanotubes/Polyurethane with Rapidly Water Sensitive Shape Memory Effect and Strain Sensing Performance |
title_sort |
hybrid nanocomposites of cellulose/carbon-nanotubes/polyurethane with rapidly water sensitive shape memory effect and strain sensing performance |
publisher |
MDPI AG |
series |
Polymers |
issn |
2073-4360 |
publishDate |
2019-09-01 |
description |
In this work, a fast water-responsive shape memory hybrid polymer based on thermoplastic polyurethane (TPU) was prepared by crosslinking with hydroxyethyl cotton cellulose nanofibers (CNF-C) and multi-walled carbon nanotubes (CNTs). The effect of CNTs content on the electrical conductivity of TPU/CNF-C/CNTs nanocomposite was investigated for the feasibility of being a strain sensor. In order to know its durability, the mechanical and water-responsive shape memory effects were studied comprehensively. The results indicated good mechanical properties and sensing performance for the TPU matrix fully crosslinked with CNF-C and CNTs. The water-induced shape fixity ratio (<i>R<sub>f</sub></i>) and shape recovery ratio (<i>R<sub>r</sub></i>) were 49.65% and 76.64%, respectively, indicating that the deformed composite was able to recover its original shape under a stimulus. The TPU/CNF-C/CNTs samples under their fixed and recovered shapes were tested to investigate their sensing properties, such as periodicity, frequency, and repeatability of the sensor spline under different loadings. Results indicated that the hybrid composite can sense large strains accurately for more than 10<sup>3</sup> times and water-induced shape recovery can to some extent maintain the sensing accuracy after material fatigue. With such good properties, we envisage that this kind of composite may play a significant role in developing new generations of water-responsive sensors or actuators. |
topic |
hybrid nanocomposites rapid recovery sharp memory polymer strain sensor |
url |
https://www.mdpi.com/2073-4360/11/10/1586 |
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