【摘要】 <正> 交联度是离子交换树脂的重要参数之一,对树脂的性能有很大的影响。有关离子交换树脂交联度的测定曾有一些报道。本实验样品所用交联剂与苯乙烯-二乙烯苯(ST-DVB)共聚物相同,但因MMA-DVB共聚物裂解产物中α-MST(α-甲基苯乙烯)峰很小,且与交联度没有定量依赖关系,故上述表征交联度的方法对本实验不适用。为此,本更多还原

【Abstract】 The characterization of the degree of crosslinking of methyl methacrylate-divinyl-benzene (MMA-DVB) copolymer was studied by means of pyrolysis chromatography. Linear relationships were obtained between (hEVB/hm-DVB)average and the degree of crosslinking (in the range of 4-24%) when different samples of DVB were used as raw material. Refinement of the data made it possible to determine the degree of cross-linking directly from the averages chromatographic peak height ratio mentioned above and the composition of DVB used. The mechanism of the pyrolysis of the copolymer was also discussed and a comparatively satisfactory explanation was proposed.更多还原