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Modification of nylon-6 with poly (m-phenylene isophthalamide) via MDI as a chain extender

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Abstract

Reinforcement of flexible nylon-6 by using poly (m-phenylene isophthalamide) PmIA (Nomex) using (MDI) 4,4′-diphenylene methane diisocyanate as a chain extender was studied. Observation by scanning electron microscopy showed that the multiblock copolymer had a homogeneous texture. From the differential scanning calorimetry measurements, the multiblock copolymers were shown to have only one melting point, T m, which is higher than that of nylon-6. The wide-angle X-ray diffraction pattern shows that nylon-6 has two diffraction peaks at 2θ=20° and 23.8°. However, the multiblock copolymer has only one peak at 2θ=20°, indicating a different crystal structure of multiblock copolymers. The copolymers appear to have a significant reinforcing effect on the mechanical properties.

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Author notes

  1. Yao-Chi Shu

    Present address: Department of Textile Engineering, Van Nung Institute of Technology, 32045, Chung-Li, Tao-Yan, Taiwan

Authors and Affiliations

  1. Department of Textile Engineering, Feng Chia University, 40720, Taichung, Taiwan

    Ming-Fung Lin & Yao-Chi Shu

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  1. Ming-Fung Lin
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  2. Yao-Chi Shu
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Lin, MF., Shu, YC. Modification of nylon-6 with poly (m-phenylene isophthalamide) via MDI as a chain extender. JOURNAL OF MATERIALS SCIENCE 28, 4862–4867 (1993). https://doi.org/10.1007/BF00361148

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  • DOI: https://doi.org/10.1007/BF00361148

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