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将取代芳基磷酸酯盐类化合物(TMP-5)、多酰胺类化合物(TMC-328)、水滑石(HT)等不同类型的成核剂添加到聚L-乳酸(PLLA)与聚D-乳酸(PDLA)中共混熔融纺丝,初步研究了成核剂对纤维结构和性能的影响。结果表明,PDLA与PLLA共混熔融纺丝可以形成立构复合型PLA(sc-PLA)晶体,成核剂的加入,更加促进了聚乳酸纤维中sc-PLA晶体的形成;而且,成核剂TMP-5的加入,既可以改善纤维的耐热性能,又有助于纤维断裂强度和拉伸模量的增大,提高了纤维的力学性能。
Different types of nucleating agents such as substituted aryl phosphate ester compounds (TMP-5), polyamide compounds (TMC-328) and hydrotalcite (HT) Lactic acid (PDLA) blend melt spinning, preliminary study of the nucleating agent on the fiber structure and performance. The results showed that the blend spinning of PDLA and PLLA could form stereocomplex PLA-scaffolds (PLA) crystals and nucleating agents, which promoted the formation of sc-PLA crystals in PLA fibers. Moreover, nucleating agent The addition of TMP-5 can not only improve the heat resistance of the fiber, but also help to increase the breaking strength and tensile modulus of the fiber and improve the mechanical properties of the fiber.