聚酯纤维光接枝丙烯酸聚合反应动力学研究

为了改善聚酯纤维的服用性能,必须对其进行改性。实验分析了聚酯纤维接枝丙烯酸体系聚合温度、引发剂浓度、单体浓度与初始接枝聚合速率的依赖关系。结果表明:光敏剂浓度与接枝率呈1.08次方关系,与单体浓度呈1.37次方关系。基于聚酯纤维光接枝聚合的终止反应主要是自由基单基终止反应的假设提出相应的接枝聚合机制,并建立了聚合速率模型,与聚合温度服从Arrhenius关系,得出了聚酯纤维接枝丙烯酸聚合反应表观活化能为29.33 kJ/mol。

Research on grafting kinetics of acrylic acid on polyester fiber under UV-light

In order to improve the polyester fiber′s wearability,it is necessary to carry out modification.This work investigated the effects of grafting temperature,the concentrations of initiator and monomer on the initial rate of graft polymerization.The rate of graft polymerization was found to depend on initiator and monomer concentrations to the 1.08st and 1.37st order respectively.Based on the assumption that single radical termination is the main way of termination reaction of grafting polymerization of polyester fiber under UV-light,the graft polymerization mechanism was proposed and the graft polymerization rate model was developed.The grafting temperature was found to obey the Arrhenius law,and the apparent active energy was 29.33 kJ/mol.