Preparation, structure and properties of poly(p-phenylene benzobisoxazole) composite fibers reinforced with graphene
Preparation, structure and properties of poly(p-phenylene benzobisoxazole) composite fibers reinforced with graphene
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DOI：
10.1007/s13233-014-2043-8
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发表时间：
2014-04
影响因子：
2.4
通讯作者：
Y. Jeong;D. Baik;Jinho Jang;B. Min;K. Yoon
中科院分区：
文献类型：
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作者：
Y. Jeong;D. Baik;Jinho Jang;B. Min;K. Yoon
石墨烯增强聚对亚苯基苯并二恶唑（PBO）复合纤维是通过 PBO/石墨烯混合物在聚磷酸（PPA）中的干喷湿法纺丝制备的，该混合物是由 4,6-二氨基间苯二酚二盐酸盐和对苯二甲酰氯在 PPA 溶剂和剥离石墨烯片存在下原位聚合制备的反应产物。将初纺纤维中石墨烯片的含量调整为0.0～2.0wt%。使用 FTIR、X 射线衍射和电子/光学显微镜鉴定了原始 PBO 和 PBO/石墨烯复合材料的分子结构、晶序和形态。研究发现，与原始 PBO 纤维相比，含有 0.2 wt% 石墨烯的复合纤维的热稳定性和拉伸机械性能显着提高。
Graphene-reinforced poly(p-phenylene benzobisoxazole) (PBO) composite fibers were manufacturedviadry-jet wet-spinning of PBO/graphene mixtures in poly(phosphoric acid) (PPA), which were reaction products prepared by thein situpolymerization of 4,6-diaminoresorcinol dihydrochloride and terephthaloyl chloride in the presence of PPA solvent and exfoliated graphene sheets. The content of graphene sheets in the as-spun fibers was adjusted to 0.0∼2.0 wt%. The molecular structure, crystalline order, and morphology of the as-spun fibers of pristine PBO and PBO/graphene composites were identified using FTIR, X-ray diffraction, and electron/optical microscopy. The thermal stability and tensile mechanical properties of the composite fiber with 0.2 wt% graphene were found to be significantly improved compared to the pristine PBO fiber.