近红外光谱法快速测定聚乙烯醇的醇解度

摘要

choosing pretreatment methods of near infrared(NIR)spectra and using module optimization, this paper establishes a model for quantitative analysis of NIR spectra to determine alcoholysis degree of polyvinyl alcohol. The experiments show that,predicted values from the module are close to those from a chemical method. TTie module is useful for rapid determination of the alcoholysis degree of polyvinyl alcohol.%应用傅里叶变换近红外漫反射光谱技术,通过对光谱预处理方法的选择和模型优化,建立了准确度较好的聚乙烯醇醇解度近红外定量分析模型,并验证了其可行性.通过验证试验表明,其预测值接近于化学法测定值,适合聚乙烯醇醇解度快速测定.