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通过２种不同的方法制备了聚乙烯接枝马来酸盐离聚体，并比较两者的ＩＲ谱，得：溶液接枝法的羧酸盐的νａｓ峰出现在１５８０～１６００ｃｍ－１之间，熔融接枝法的νａｓ峰则出现在１５４６ｃｍ－１处；对于同一种接枝法制备所得的产物，不同的成膜条件ＩＲ谱也不同，溶液铸膜的ＩＲ谱较复杂．以上谱图的差别说明了不同的制备方法所得产物的离子聚集状态有区别．
Polyethylene grafted maleate ionomers were prepared by two different methods and their IR spectra were compared to obtain that the νas peak of the carboxylic acid salt of solution grafting appears between 1580 and 1600 cm -1 , The νas peak of the melt grafting method appears at 1546cm-1. For the products prepared by the same grafting method, the IR spectra of different film-forming conditions are also different, and the IR spectrum of solution casting film is more complicated. The difference between the above spectra shows that there are differences between the ion aggregation states of the products obtained by different preparation methods.