聚合物共混物的红外光谱研究

Study of Polymer Blends by Infrared Sprectrum

采用傅立叶变换红外光谱 (FTIR)技术 ,同时将谱图进行归一化处理 ,通过合谱共混谱研究了氯丁橡胶(CR) /聚氯乙烯 (PVC)和CR/聚苯乙烯 (PS)两个二元聚合物共混体系的相容性。结果表明 ,CR与PVC所组成的共混物中组分聚合物红外光谱特征吸收谱带发生较大位移 ,表现出较强的相互作用 ;CR与PS所组成的共混物的红外吸收特征峰发生了较小偏移 ,同时特征峰形略有变化 。

Using Fourier transform infrared spectroscopy(FTIR),compatibilities of poly(chloroprene)(CR)/poly(vinyl chloride)(PVC) blend and CR/polystyrene(PS) blend were studied by comparing synthesis spectrum with blend spectrum.It was found that CR and PVC had strong inter-molecular interaction,incorporating that infrared characteristic absorbing peaks of the groups have prominent change.CR and PS have weak intermolecular interaction,behaving that infrared characteristic absorbing peaks of the groups have small change.