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Open AccessArticle

Morphology, Structure, and Properties of Conductive Polylactide Fibers Prepared Using Polyvinyl Acetate and Multiwalled Carbon Nanotubes

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Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi 214122, China
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Fujian Key Laboratory of Novel Functional Textile Fibers and Materials, Minjiang University, Fuzhou 350108, China
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Shenghong Group Co., Ltd., Shengze 215228, China
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China Nonwovens & Industrial Textiles Association, Beijing 100020, China
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Jiangsu Doway New Materials Science & Technology Co. Ltd., Suqian 223800, China
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Authors to whom correspondence should be addressed.
Coatings 2019, 9(10), 651; https://doi.org/10.3390/coatings9100651
Received: 26 August 2019 / Revised: 1 October 2019 / Accepted: 6 October 2019 / Published: 9 October 2019
Two kinds of conductive polylactide fibers—polylactide pre-oriented yarns (PLA-POY) and PLA-drawn textured yarns (PLA-DTY) are prepared by coating method using ethyl acetate as solvent, multiwalled carbon nanotubes (MWCNTs) as conductive filler, and polyvinyl acetate (PVAc) as dispersing agent and coating agent. The PLA fibers are characterized by scanning electron microscope (SEM), Fourier-transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), resistance meter, and tensile test. The results show that PLA-POY and PLA-DTY have been coated successfully by PVAc and MWCNTs. After PLA-POY fibers are treated by ethyl acetate, the highly porous structures form because of swelling and the subsequent solvent-induced crystallization of PLA-POY fibers with low crystallinity. This causes the tensile force to decrease. However, PVAc can improve the tensile force of the treated PLA-POY fibers. For PLA-DTY fibers, the effect of ethyl acetate on surface morphology is small. Therefore, the treated PLA-DTY fibers own higher tensile properties than original PLA-DTY fibers due to the existence of PVAc. With the increase of PVAc and MWCNTs, the conductive properties of the PLA fibers will increase. The electrical conductivity of PLA-POY and PLA-DTY fibers can reach 0.53 and 0.13 µs/cm, respectively. View Full-Text
Keywords: polylactide fibers; conductive properties; multiwalled carbon nanotubes; polyvinyl acetate; ethyl acetate polylactide fibers; conductive properties; multiwalled carbon nanotubes; polyvinyl acetate; ethyl acetate
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MDPI and ACS Style

Liu, Q.; Zhou, Y.; Shen, Y.; Li, Y.; Guo, H.; Deng, B.; Li, Y. Morphology, Structure, and Properties of Conductive Polylactide Fibers Prepared Using Polyvinyl Acetate and Multiwalled Carbon Nanotubes. Coatings 2019, 9, 651.

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