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从内聚能的角度建立了含共聚组成、序列不均匀性的共聚物分子量及分布理论 ,导出其计算式 .将凝胶渗透色谱 (GPC)与紫外吸收光谱 (UV)和示差折光仪 (DR)串接 ,测定苯乙烯 (St) / N-苯基马来酰亚胺(PMI)共聚物的分子量 .根据 St/ PMI共聚合原理 ,对 St-PMI共聚物的分子量进行模型化 ,该模型能较好地预测引发剂、单体配比、转化率对共聚物分子量的影响 .
From the perspective of cohesive energy, the molecular weight and distribution theory of copolymer containing copolymerization composition and sequence inhomogeneity were established, and the calculation formula was deduced.The results of gel permeation chromatography (GPC), ultraviolet absorption spectroscopy (UV) and differential refractometer ) Were used to determine the molecular weight of styrene (St) / N-phenylmaleimide (PMI) copolymer.According to St / PMI copolymerization principle, the molecular weight of St-PMI copolymer was modeled, and the model Can better predict the impact of initiator, monomer ratio, conversion rate on the molecular weight of the copolymer.