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首页> 外文期刊>Journal of Applied Polymer Science >lmprovements in the Drying Process for Wet-Spun Chitosan Fibers
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lmprovements in the Drying Process for Wet-Spun Chitosan Fibers

机译：壳聚糖湿纺纤维干燥工艺的改进

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摘要

Chitosan fibers were wet spun from a 6% by weight chitosan in 3% by volume acetic acid solution.The fibers were collected as a 20 filament yarn intended for use as a chaff substrate.The yarn had to be sufficiently dry following spinning to allow for winding and subsequent separation of the filaments.Drying of the yarn was attempted using various techniques including direct and radiant heat,forced air,and chemical drying agents.Product yarns were analyzed for ease of separation of the filaments,as well as comparison of mechanical properties.Individual fibers were evaluated on the basis of moisture content,surface morphology and fiber diameter.Results indicate that the particular drying method or agent used has a considerable impact upon all of the characteristics listed above.A methanol dry bath was found to provide optimum drying of the chitosan yarn,producing filaments with low moisture content that separated easily from one another.Methanol drying yielded chitosan fibers with smaller diameter,superior surface smoothness and superior mechanical properties to fibers dried using forced air,heat,or other tested drying agents such as acetone and isopropanol.
机译：壳聚糖纤维由6％重量的壳聚糖在3％体积的乙酸溶液中湿纺而成，纤维被收集为20根长丝，用作谷壳基质，纺丝后必须充分干燥以确保缠绕和随后的细丝分离。尝试使用包括直接和辐射热，强制空气和化学干燥剂在内的各种技术来干燥纱线。对产品纱线进行分析以简化细丝的分离以及机械性能的比较根据水分含量，表面形态和纤维直径对各种纤维进行了评估，结果表明所用的特定干燥方法或试剂对上述所有特性都有相当大的影响。发现甲醇干燥浴可以提供最佳干燥效果脱乙酰壳多糖纱线，生产出的水分含量低的长丝很容易彼此分离。甲醇干燥产生的脱乙酰壳多糖纤维更细与使用强制空气，热或其他经过测试的干燥剂（例如丙酮和异丙醇）干燥的纤维相比，其直径，优异的表面光滑度和优异的机械性能。

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