原位聚合生物基聚酰胺56-聚乙二醇复合物的制备及纤维成形

Preparation of Biobased Polyamide 56-Polyethylene Glycol Composite and Fibers Forming Through In-Situ Polymerization

利用生物质原料研究可持续发展的聚合物及其制品已经成为学术界和产业界的热点。文中将聚乙二醇1000(PEG1000)进行端羧基改性,并与生物基聚酰胺56盐(PA56盐)和戊二胺共聚制备了不同PEG1000含量的PA56/PA56-co-PEG复合物。通过傅里叶变换红外光谱和X射线衍射对复合物的分子结构进行了表征,通过四探针和接触角对聚合物膜的电阻率和亲水性进行了测定。将复合物进行熔融纺丝,研究了纤维的力学性能和保水性。结果表明,PA56/PA56-co-PEG复合物的热分解温度比PA56略有降低,但仍均远高于PA56的加工温度。并且复合物膜的电阻率达4×10^(4)Ω·cm,显示良好的抗静电性,加入18%PEG1000共聚后复合纤维的拉伸强度和断裂伸长率分别提高56.2%和100%,保水率提高了194.6%。

Sustainable polymers and their products based on biomass have become a hot topic in academic and industry.In this paper,PA56/PA56-co-PEG complexes with different contents of PEG1000 were prepared by modifying polyethylene glycol 1000(PEG1000)with terminal carboxyl group and copolymerizing with bioyl amide 56 salt(56 salt)and glutarenediamine.The molecular structure of the composites was characterized by Fourier transform infrared spectroscopy(FT-IR)and X-ray diffraction(XRD),and the hydrophilicity and resistivity of the polymer films were measured by four probe and contact angle.The mechanical properties and water retention of the composites were studied by melt spinning.The results show that the thermal decomposition temperature of the PA56/PA56-co-PEG composites is slightly lower than that of PA56,but it is still much higher than that of PA56.The resistivity of the composite film reaches 4×10^(4)Ω·cm,showing good antistatic property.The tensile strength and elongation at break of the composite fibers are increased by 56.2% and 100%,respectively,and the water retention rate is increased by 194.6% after the addition of 18%PEG1000.