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Facile fabrication of high-performance PA66/MWNT nanocomposite fibers

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Abstract

Carbon nanotubes (CNTs) are promising polymer-strengthening materials; however, it is difficult to achieve the even distribution of CNTs in polymer matrixes and strong interfacial interactions between CNTs and polymeric chains. In the present work, multi-walled carbon nanotubes (MWNTs), carboxylic multi-walled carbon nanotubes (MWNTs-COOH), amino multi-walled carbon nanotubes (MWNTs-NH2), and hydroxylated multi-walled carbon nanotubes (MWNTs-OH) were added as reinforcements to the polyamide 66 (PA66) matrix. CNTs were dispersed in the PA66 matrix by a twin-rotor high-speed mixing extruder at 800 rpm. Chips were melted spun and two-step stretched to fabricate nanocomposite fibers. The microstructure and properties of nanocomposite fibers were investigated. It was found that MWNTs-COOH were well dispersed in the PA66 matrix. PA66/MWNTs-COOH nanocomposite fibers exhibited the best mechanical properties. The tensile strength and Young’s modulus of PA66/0.3 wt% MWNTs-COOH nanocomposite fibers were ~ 907 MPa and ~ 5.92 GPa, respectively, which were 22.2% and 4.8% higher than those of pure PA66 fibers, respectively.

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Funding

This work was supported by the Tianjin Science and Technology Military and Civilian Integration key special project (18ZXJMTG00110).

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Authors and Affiliations

  1. School of Material Science and Engineering, Tiangong University, Tianjin, 300387, China

    Xue-Feng Gao, Wen-Guang Yu, Na Han & Xing-Xiang Zhang

  2. Tianjin Municipal Key Laboratory of Advanced Fiber and Energy Storage, Tianjin, China

    Xue-Feng Gao, Wen-Guang Yu, Na Han & Xing-Xiang Zhang

  3. Advanced Textile and Composite Key Lab of the Ministry of Education, Tianjin, China

    Xue-Feng Gao, Wen-Guang Yu, Na Han & Xing-Xiang Zhang

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  1. Xue-Feng Gao
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  2. Wen-Guang Yu
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Correspondence to Na Han or Xing-Xiang Zhang.

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Gao, XF., Yu, WG., Han, N. et al. Facile fabrication of high-performance PA66/MWNT nanocomposite fibers. Colloid Polym Sci 300, 509–519 (2022). https://doi.org/10.1007/s00396-022-04961-7

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  • DOI: https://doi.org/10.1007/s00396-022-04961-7

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