JOURNAL OF TEXTILE RESEARCH ›› 2017, Vol. 38 ›› Issue (11): 1-8.doi: 10.13475/j.fzxb.20170404008

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Light-stability and enhancement mechanism of polyphenylene sulfide fiber modified by graphene

  

  • Received:2017-04-14 Revised:2017-08-09 Online:2017-11-15 Published:2017-11-15

Abstract:

In order to improve the light-stability of polyphenylene sulfide (PPS) fibers, PPS-graphene (PPS-G) nanocomposite fibers were prepared via pre-kneading/ melt-mixing and melt spinning to improve the photo-stability of PPS fibers. The mechanical property retention rate and the melting behavior of PPS-G fibers before and after xenon lamp aging treatment were characterized by monofilament strength tester and differential scanning calorimeter so as to further investigate the enhancement mechanism of graphene contents on light stability of PPS-G fibers. The results showed that the mechanical property retention rate of PPS-G composite fibers after 192h of aging treatment increased significantly with the increase of graphene contents. When the content of graphene was 1.0 wt%, the breaking strength and the elongation retention rate of treated PPS-G composite fibers were 80.2 % and 90.6 % respectively, which increased by 23.8 % and 26.1 % in comparison with that of neat PPS fibers. In addition, Tm of pure PPS fibers after treatment decreased by 7.1 ℃ while Tm of PPS-G-1.0 composite fibers after photo-aging decreased only by 3.0 ℃ , indicating that influences of photo-aging on melting point of PPS-G composite fibers reduced obviously. The results show graphene are adapted to speculate the light-stability enhancement mechanism of polyphenylene sulfide fiber.

Key words: polyphenylene sulfide, graphene, light-stability, fouorescence quenching, light screening, free radicals quenching

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