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| GPC-多检测联用技术测定聚己内酯分子量及其分布 | |
| 引用本文： | 戴晨伟,徐洪耀,杨捷,杨本宏,吴振玉.GPC-多检测联用技术测定聚己内酯分子量及其分布[J].化学分析计量,2009,18(1). |
| 作者姓名： | 戴晨伟 徐洪耀 杨捷 杨本宏 吴振玉 |
| 作者单位： | 1. 安徽大学化学化工学院,合肥,230039 2. 东华大学材料科学与工程学院,上海,200051 3. 合肥学院化学与材料工程系,合肥,230022 |
| 摘 要： | 介绍一种用于生物可降解高分子材料聚已内酯(PCL)及其改性高分子的分子量和分子量分布测定的GPC-示差折光(RI)-示差黏度(DV)-直角光散射(RALLS)多检测联用技术.叙述了该方法的实验原理,并对测试过程中的有关技术及实验结果进行了讨论.该方法可准确测定聚己内酯(PCL)及其改性高分子的分子量及其分布、特性黏度分布、Mark-Houwink方程系数以及高分子尺寸等重要参数.通过对窄分布PS标样验证,分子量测定结果的相对误差在1%之内. |
| 关 键 词： | GPC-多检测联用技术 聚己内酯 黏度 分子量 分子量分布 |
DETERMINATION OF MOLECULAR WEIGHT AND ITS DISTRIBUTION OF POLYCAPROLACTONE WITH GPC-MULTI-DETECTOR METHOD |
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| Dai Chenwei,Xu Hongyao,Yang Jie,Yang Benhong,Wu Zhenyu.DETERMINATION OF MOLECULAR WEIGHT AND ITS DISTRIBUTION OF POLYCAPROLACTONE WITH GPC-MULTI-DETECTOR METHOD[J].Chemical Analysis And Meterage,2009,18(1). | |
| Authors: | Dai Chenwei Xu Hongyao Yang Jie Yang Benhong Wu Zhenyu |
| Institution: | 1.School of Chemistry and Chemical Engineering;Anhui University;Hefei 230039;China;2.College of Material Science and Engineering;Donghua University;Shanghai 201620;3.Department of Chemistry and Material Engineering;Hefei University;China |
| Abstract: | A GPC-RI-DV-RALLS coupling technique to deterrmine molecular weight and its distribution of biodegradable polymers of polycaprolactone were introduced as well as the method experimental principle and experimental procedure.The results of the experiment was discussed.The method can be used as a precise method to determine polycaprolactone molecular weight and its distribution,intrinsic viscosity distribution,Mark-Houwink parameters and polymer dimensions.The method was verified by using PS reference sample a... |
| Keywords: | GPC-multi-detection technique polycaprolactone viscosity molecular weight molecular weight distribution |
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