The primary use of poly(acrylonitrile) (PAN) fibers, commonly referred to as acrylic fibers, is in textile applications like clothing, furniture, carpets, and awnings. All commercially available PAN fibers are processed by solution spinning; however, alternative, more cost‐effective processes like melt spinning are still highly desired. Here, the melt spinning of PAN‐co‐poly(methyl acrylate) (PMA) plasticized with propylene carbonate (PC) at 175°C is reported. The use of methyl acrylate (MA) as comonomer and PC as an external plasticizer renders the approach a combination of internal and external plasticization. Various mixtures of PAN and PC used in this work were examined by rheology, subjected to melt spinning, followed by discontinuous and continuous washing, respectively. The best fibers were derived from a PAN‐co‐PMA copolymer containing 8.1 mol‐% of MA having a number‐average molecular weight M _n of 34 000 g/mol, spun in the presence of 22.5 wt.‐% of PC. The resulting fibers were analyzed by scanning electron microscopy and wide‐angle X‐ray scattering (WAXS), and were subjected to mechanical testing.

中文翻译：

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碳酸亚丙酯-增塑的聚（丙烯腈）-共聚（丙烯酸甲酯）的熔融纺丝

聚（丙烯腈）（PAN）纤维（通常称为丙烯酸纤维）的主要用途是用于服装，家具，地毯和遮阳蓬等纺织应用。所有市售的PAN纤维都通过溶液纺丝进行加工。但是，仍然非常需要替代的，更具成本效益的工艺，例如熔体纺丝。在这里，PAN-的熔融纺丝合作‐报道了在175°C下用碳酸亚丙酯（PC）增塑的聚（丙烯酸甲酯）（PMA）。丙烯酸甲酯（MA）作为共聚单体和PC作为外部增塑剂的使用使该方法既有内部增塑又有外部增塑。通过流变学检查该工作中使用的PAN和PC的各种混合物，进行熔体纺丝，然后分别进行不连续和连续洗涤。最好的纤维是由PAN- co- PMA共聚物得到的，该共聚物含有8.1 mol％的MA，数均分子量M _n为34000 g / mol，在22.5 wt。％PC的存在下纺丝。通过扫描电子显微镜和广角X射线散射（WAXS）分析所得的纤维，并进行机械测试。