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用红外光谱法测定了乙丙共聚物的组成和序列分布.以无规聚丙稀作标样,所得吸光度方程测定乙丙共聚物的组成的平均相对误差在±1.57％。选用无规聚丙稀、2,5-二甲基已烷、鲨烷和正十四碳烷作模型化合物测定乙丙共聚物的序列分布,所建立的吸光度方程组的系数与文献值一致。
The composition and sequence distribution of ethylene-propylene copolymer were determined by infrared spectroscopy. The average relative error of the composition of ethylene-propylene copolymer determined by random absorbance equation was ± 1.57%. The random copolymer of 2,5-dimethylhexane, squalane and n-tetradecane was selected as the model compound to determine the sequence distribution of ethylene-propylene copolymer. The coefficients of the established absorbance equation were consistent with those of the literature.