聚乙烯接枝马来酸盐离聚体的红外光谱──制备方法和成膜条件的影响

FTIR of Polyethylene Graft Maleate Ionomer

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．

Studies on FTIR spectra of PE g MAMe (Zn,Na) showed that different preparing procedures produced spectrally different ionomers. Ionomers prepared by grating showed carboxylate ν as peak in 1 580￣1 600 cm -1 , but those prepared by melt grating showed ν as peak in 1 546 cm -1 and also appeared a new peak in 1 410 cm -1 In Na ionomer the peak in 1 466 cm -1 was split into two peaks, there was a new peak in 1 437 cm -1 They were perhaps caused by aggregation of ionomers and interaction of ions.