| 以六氟异丙醇为溶剂的聚甲醛凝胶渗透色谱研究 |
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| 引用本文： | 苏诚伟,张德震.以六氟异丙醇为溶剂的聚甲醛凝胶渗透色谱研究[J].功能高分子学报,1994,7(1):18-24. |
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| 作者姓名： | 苏诚伟 张德震 |
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| 作者单位： | 华东理工大学高分子材料系，中国科技大学结构分析研究开放实验室，上海太平洋化工集团公司溶剂厂 |
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| 基金项目： | 国家“八五”科技攻关项目 |
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| 摘 要： | 研究了均聚和共聚甲醛在六氟异内醇中的凝胶渗透色谱（ＧＰＣ）。对共聚甲醛出现的缔合现象从主链结构作了解释，并找到了避免缔合的方法；对共聚甲醛ＧＰＣ淋洗曲线上的异常小峰从聚合机理角度进行了探讨，推测得到小峰所对应的物质。确定了以六氟异丙醇为溶剂的聚甲醛的凝胶色谱表征方法，并探索采用凝胶色谱－粘度计联用法得到分子量和分子量分布结果。
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| 关 键 词： | 聚甲醛 六氟异丙醇 GPC 溶剂 |
The Gel Permeation Chromatography Investigation of Polyoxymethylene -hexafluoroisopropanol System |
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| Su chengwei,Zhang Dezhen,Xu Zhongde,Hu Qizhong.The Gel Permeation Chromatography Investigation of Polyoxymethylene -hexafluoroisopropanol System[J].Journal of Functional Polymers,1994,7(1):18-24. |
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| Authors: | Su chengwei Zhang Dezhen Xu Zhongde Hu Qizhong |
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| Abstract: | The gel permeation chromatography(GPC)of polyoxymethylene(POM)-hexafluoroisopropanol(HFIP)system has been studied.The aggregation phenomenon of POM in HFIP was observed and successfully explained from the main chain structure of POM.The deaggregation can be realized by adding sodium trifluoroacetate(NaTFA)in POM-HFIP system, thus the reliable GPC chromatogram can be obtained. In the reported GPC chromatograms of POM copolymers,an abnomal small peak at higher elution volume was found but without any explanation.It was discussed in detail from polymerization mechanism of POM in this paper.The molecular weight and molecular weight distribution of POM were determined by GPC using an on-line viscosity detector. |
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| Keywords: | GPC Polyoxymethylene hexafloroisopropanol GPC on-line viscometer molecular weight molecular weight distribution |
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