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一 前言 聚对苯二甲酸乙二醇酯(PET)和其他成纤高聚物结晶动力学的研究,大多用Avrami方程原形来处理。 In(1-W_s/W_o)=-Kt~n(1)式中,W_o为样品总重量;W_s为t时刻结晶部分的重量;K为总结晶速率常数;n为Avrami指数。K与n可表征聚合物的结晶速度与结晶机理。但式(1)不能反映结晶全过
A preface The study of the crystallization kinetics of polyethylene terephthalate (PET) and other fiber-forming polymers is mostly based on the Avrami equation prototype. In (1-W_s / W_o) = - Kt ~ n (1) where W_o is the total sample weight; W_s is the weight of the crystalline fraction at time t; K is the total crystallization rate constant; and n is the Avrami index. K and n characterize the crystallization rate and crystallization mechanism of the polymer. However, equation (1) can not reflect the entire crystallization