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首页> 外文期刊>Journal of Applied Polymer Science >Studies on Fibers Spun from Poly(vinyl alcohol-b-acrylonitrile) Emulsions Prepared by Ultrasonic Technique. II.Properties of the Fibers
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Studies on Fibers Spun from Poly(vinyl alcohol-b-acrylonitrile) Emulsions Prepared by Ultrasonic Technique. II.Properties of the Fibers

机译：超声波法制备聚乙烯醇-b-丙烯腈乳液的纺丝纤维的研究。二，纤维性能

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摘要

The moisture content of poly(vinyl alcohol-b-acrylonitrile) fibers decreases with an increasing hydrophobic AN content and crystallinity of the fibers; however, the copolynler fiber with 26.94% AN, drawn x 5, and heat-treated at 200°C has a moisture content value slightly lower than that of commercial PV A fiber, but much higHer than that of commercial PAN fiber. The block copolymer fibers have a water-retention value higher than that of commercial PV A fiber, owing to the presence ofvoids in these fibers, and have a stronger wicking ability than that of commercial PV A, PAN fibers, and wool and cotton mainly due to the grooved surface and bulk porous morphology of the fibers. The tensile strength of the copolymer fibers with an appropriate AN content are lower than that of commercial PV A fiber, but higher than that of commercial PAN fiber and much higher than that of wool and cotton. The melting temperatures of the copolymer fibers increase with increasing heat-treatment temperature. The copolymer fibers pos- sess a lower peak cyclizing temperature than that of the PAN fiber and have a higher thermal stability than that of both PVA and PAN fibers.
机译：聚乙烯醇-b-丙烯腈纤维的水分含量随着疏水性AN含量和纤维结晶度的增加而降低。但是，AN含量为26.94％，拉伸倍数为5并在200°C热处理的共聚多纳纤维的含水量略低于商用PV A纤维，但比商用PAN纤维高得多。嵌段共聚物纤维由于存在空洞而具有比市售PV A纤维更高的保水值，并且比市售PV A，PAN纤维以及羊毛和棉具有更强的芯吸能力。到沟槽表面和纤维的疏松多孔形态。具有适当AN含量的共聚物纤维的拉伸强度低于商业用PV A纤维，但高于商业用PAN纤维，远高于羊毛和棉。共聚物纤维的熔融温度随着热处理温度的升高而升高。共聚物纤维的峰值环化温度低于PAN纤维的峰值环化温度，并且具有比PVA和PAN纤维更高的热稳定性。

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