【摘要】 建立了红外光谱法分析低相对分子质量聚异丁烯中α－烯烃含量的方法。利用红外光谱的差谱技术，选择７２５ｃｍ－１处峰作为差谱终点判据。调整差减因子可得样品的差谱图。该方法操作简单，准确度在±５．２％以内，可以实现快速分析的要求。更多还原

【Abstract】 A practical method for determination of the percentage quantity of α olefins in polyisobutene of low molecular weight was developed with infrared technique. The end point of spectrum difference was selected at the peak of 725 cm -1 and the spectrum difference chart of the sample can be obtained by adjusting the factor of difference. The accuracy of the method was within ±5.2%.更多还原