红外光谱法测定聚丙烯中透明成核剂含量研究  

Determination of content of transparent nucleating agent in polypropylene using infrared spectroscopy

作　　者：刘义 王叶 孙伟 曲国兴 许霞 杨少林 袁宁 LIU Yi;WANG Ye;SUN Wei;QU Guoxing;XU Xia;YANG Shaolin;YUAN Ning(CHN Energy Xinjiang Chemical Co,Ltd,Urumqi 831400,China)

机构地区：[1]国能新疆化工有限公司,乌鲁木齐831400

出　　处：《中国塑料》2022年第8期115-118,共4页China Plastics

基　　金：国家能源集团科技创新项目(GJNY-20-22)。

摘　　要：利用注塑法制备校准和测试样片,根据聚丙烯(PP)中山梨醇缩醛类透明剂成核剂在1073 cm^(-1)处的特征吸收峰进行定性和定量,建立了用红外光谱法测定PP中山梨醇缩醛类透明剂成核剂含量的方法,克服了制片厚度对测试结果的影响。结果表明,透明剂含量与其特征峰的吸光度呈良好的线性关系,相关系数达0.9994,样品中透明成核剂含量测定结果回收率在98.59%~100.02%之间;该方法检测速度快、检测精度高、绿色环保,非常适合于PP中透明成核剂含量的测定。In this work,a method for determining the content of sorbitol acetal⁃type transparent nucleating agent in polypro⁃pylene PP through infrared spectrometry was established on the basis of its characteristic absorption peak at 1073 cm^(-1) us⁃ing an injection⁃molded specimen for calibration and test.This method eliminated the influence of sheet thickness on test results.The results showed that there was a good linear relationship between the content of transparent nucleating agent and the absorbance of characteristic peak with a correlation coefficient of 0.9994.The recovery of the content was be⁃tween 98.59%and 100.02%.This method exhibited the advantages of high speed,high precision and environmental protection,and it was suitable for determining the content of transparent nucleating agent in PP.

关 键 词：NX8000透明成核剂 聚丙烯 红外光谱法 

分 类 号：TQ320.77[化学工程—合成树脂塑料工业]