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首页> 外文期刊>Journal of Applied Polymer Science >Wet Spun Fibers from Solutions of Cellulose in an Ionic Liquid with Suspended Carbon Nanoparticles
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Wet Spun Fibers from Solutions of Cellulose in an Ionic Liquid with Suspended Carbon Nanoparticles

机译：含悬浮碳纳米粒子的离子液体中纤维素溶液的湿纺纤维

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摘要

Wet spun fibers from solutions of dissolving pulp in 1-ethyl-3-methylimidazolium acetate (EmimAc) with up to 50 wt % (based on cellulose) suspended carbon black and graphene nanoplatelets particles were studied. Carbon fillers were dispersed by simple shearing in a Couette type mixer and the resulting spin dope was extruded into a hot water coagulation bath from a single hole spinneret. Microstructure, mechanical properties, and electrical conductivity were assessed as a function of filler loading and discussed in comparison to melt spun fibers with similar fillers. The coagulation process and subsequent drying of wet spun fibers was found to produce a significant microporosity, more so the higher the filler loading. The electrical percolation threshold was quite high in the wet spun fibers and relatively modest values of conductivity were obtained with regard to the high filler loadings. Carbon black was found to be superior to graphene nanoplatelets. This was related to flow-induced orientation effects. The mechanical properties of the carbon-filled fibers were found to be similar or lower compared to the pure cellulose fibers because of low interfacial interactions and formation of microporosity. (C) 2014 Wiley Periodicals, Inc.
机译：研究了将纸浆溶解在乙酸1-乙基-3-甲基咪唑鎓盐（EmimAc）中的溶液中的湿纺纤维，该溶液的悬浮碳黑和石墨烯纳米片颗粒含量最高为50 wt％（基于纤维素）。通过简单剪切在Couette型混合器中分散碳填料，并将所得纺丝原液从单孔喷丝头挤出到热水凝结浴中。评估了微结构，机械性能和电导率随填料含量的变化，并与具有类似填料的熔纺纤维进行了比较。发现凝结过程和随后干燥的湿纺纤维会产生显着的微孔性，填料填充量越高越好。在湿纺纤维中，电渗流阈值很高，就高填充量而言，电导率值相对适中。发现炭黑优于石墨烯纳米片。这与流动引起的取向效应有关。由于低的界面相互作用和微孔的形成，发现碳填充纤维的机械性能与纯纤维素纤维相似或更低。 （C）2014威利期刊公司

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