利用裂解色谱研究了聚砜辐射交联前后结构的变化。从裂解谱图中,各裂解产物的相对含量随辐照剂量的变化规律,推测了辐射交联发生的位置及可能的交联机理。利用谱图中甲苯与苯的相对含量比与辐照剂量的关系,求得了不同温度下聚砜的凝胶化剂量,所得值与溶解度法求得值比较一致。 The changes of structure of polysulfone radiation before and after crosslinking were studied by pyrolysis chromatography. From the spectrum of pyrolysis, the relative content of the pyrolysis products varies with the irradiation dose, and the location of the radiation crosslinking and the possible mechanism of crosslinking are speculated. According to the relationship between the relative content of toluene and benzene and the irradiation dose, the gelation dose of polysulfone at different temperatures was obtained. The obtained value was in good agreement with the solubility method.