Multimaterial textiles are frequently employed to attain a certain function or aesthetic effect. The multimaterial assemblies face recycling limitations due to challenges to sort and separate the component materials. A one‐step melt extrusion approach to process two mixed common textile polymers, polyamide 6 (PA6), and polypropylene (PP), into PA6:PP hybrid fibers is reported in this study. PA6:PP hybrid fibers were produced in four different configurations; PA6‐50 (50 wt% PA6), PA6‐60 (60 wt% PA6), PA6‐65 (65 wt% PA6), and PA6‐80 (80 wt% PA6). The PP component was sacrificially removed from the hybrid fibers and the resultant PA6 fiber structure was analyzed. The SEM images show the development of PA6 microfibers in PA6‐50 and PA6‐60 hybrid fibers with mean diameters of 0.76 μm and 1.13 μm upon fiber drawing, respectively. In PA6‐65 hybrid fibers, the PA6 microfibers were found along with areas where PA6 was encapsulating the PP. Thermal and mechanical properties of the untreated and treated hybrid fibers were also investigated. PA6‐60 hybrid fibers were processed into single jersey knitted fabrics and treated to obtain PA6 microfibers fabrics. The bursting strength and wicking properties of the fabric, before and after treatment, were comparatively studied. POLYM. ENG. SCI., 60:690–699, 2020. © 2020 Society of Plastics Engineers

中文翻译：

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从杂化纤维到超细纤维：一步一步双螺杆熔融挤出的聚酰胺6 /聚丙烯共混物的特性

经常使用多材料纺织品来达到一定的功能或美学效果。由于分类和分离组件材料的挑战，多材料组件面临回收限制。本研究报道了一种一步熔融挤出方法，可将两种混合的普通纺织聚合物聚酰胺6（PA6）和聚丙烯（PP）加工成PA6：PP杂化纤维。PA6：PP杂化纤维有四种不同的配置；PA6-50（50 wt％PA6），PA6-60（60 wt％PA6），PA6-65（65 wt％PA6）和PA6-80（80 wt％PA6）。从混合纤维中牺牲性地除去PP组分，并分析所得的PA6纤维结构。SEM图像显示了PA6-50和PA6-60混合纤维中PA6超细纤维的发展情况，纤维拉伸后平均直径分别为0.76μm和1.13μm。在PA6-65混合纤维中，发现了PA6超细纤维以及PA6包裹PP的区域。还研究了未处理和处理后的杂化纤维的热和机械性能。将PA6-60杂化纤维加工成单面针织面料并进行处理，以获得PA6超细纤维面料。对织物在处理前后的破裂强度和芯吸性能进行了比较研究。POLYM。ENG。SCI。，60：690–699，2020.©2020塑料工程师协会 治疗前后，进行了比较研究。POLYM。ENG。SCI。，60：690–699，2020.©2020塑料工程师协会 治疗前后，进行了比较研究。POLYM。ENG。SCI。，60：690–699，2020.©2020塑料工程师协会