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Structure and Physical Properties of Hydrophilic Polyamide Copolymers Fiber Based on Nylon 6 and Nylon 4,6

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Abstract

Recently, hydrophilic synthetic fiber products have been sought to substitute natural fibers. This paper investigates the structure and properties of spined copolymer of nylon 6, nylon 4,6 and polyethylene oxide (PEO) — polypropylene oxide (PPO) diamine according to contents of PEO-PPO diamine (15–40%). The structure of new polyamide (NPA) were analyzed by X-ray diffraction (XRD), differential scanning calorimeter (DSC), dynamic mechanical analysis (DMA), gradient density column and gas pycnometry. Through XRD and DSC analysis, it was confirmed that the structure of NPA was similar to nylon 6 regardless of the content of PEO-PPO diamine. The DMA results show that the mobility of polymer chain in non-crystalline structure increases. It was considered that PEO-PPO diamine provides flexible segments and hydrophilic moieties to NPA. The analysis of moisture regain and tenacity was revealed that NPA exhibited 7.38% moisture regain and 2.85 g/denier tenacity.

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Acknowledgment

This research was supported by the development of material component technology funded by Ministry of Trade, Industry and Energy (No 10043781).

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Correspondence to Seung Geol Lee or Hyun Hok Cho.

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Kim, M.S., Hwang, Y.N., Kwon, S.T. et al. Structure and Physical Properties of Hydrophilic Polyamide Copolymers Fiber Based on Nylon 6 and Nylon 4,6. Fibers Polym 21, 2173–2178 (2020). https://doi.org/10.1007/s12221-020-9873-0

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  • DOI: https://doi.org/10.1007/s12221-020-9873-0

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