| 聚丙烯酸的凝胶渗透色谱分离及相对分子质量测定 |
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| 引用本文： | 杜小弟,张安富,雷家珩,巫辉.聚丙烯酸的凝胶渗透色谱分离及相对分子质量测定[J].分析测试学报,2011,30(2):167-170. |
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| 作者姓名： | 杜小弟 张安富 雷家珩 巫辉 |
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| 作者单位： | 武汉理工大学,理学院,化学系,湖北,武汉,430070 |
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| 基金项目： | 交通部西部交通建设科技项目 |
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| 摘 要： | 采用Sepax Nanofilm SEC-150色谱柱和自制窄分布聚丙烯酸标样,考察了不同无机盐及其离子强度、酸度等对不同相对分子质量的聚丙烯酸分离效果的影响.在此基础上确定了凝胶渗透色谱分离聚丙烯酸的最佳条件:以磷酸盐缓冲液(离子强度0.10 mol/L,pH=6.9)为流动相,流速1.0 mL/min,柱温25 ℃...
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| 关 键 词： | 聚丙烯酸 相对分子质量 凝胶渗透色谱 非体积排除效应 |
Separation of Polyacrylic Acid and Determination of Its Relative Molecular Mass by Gel Permeation Chromatography |
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| DU Xiao di,ZHANG An fu,LEI Jia heng,WU Hui.Separation of Polyacrylic Acid and Determination of Its Relative Molecular Mass by Gel Permeation Chromatography[J].Journal of Instrumental Analysis,2011,30(2):167-170. |
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| Authors: | DU Xiao di ZHANG An fu LEI Jia heng WU Hui |
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| Institution: | DU Xiao-di,ZHANG An-fu,LEI Jia-heng,WU Hui(Department of Chemistry,College of Science,Wuhan University of Technology,Wuhan 430070,China) |
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| Abstract: | Using Sepax Nanofilm SEC-150 chromatographic column and self-made narrow distribution polyacrylic acid(PAA) standard sample,effects of different inorganic salts and their ionic strength as well as pH value on the separation of PAA were investigated.The results indicated that the different relative molecular masses of PAA with mass concentration of 0.5-2.0 g/L could be separated by using ionic strength of 0.10 mol/L and pH 6.9 phosphorous buffer as mobile phase,with a flow rate of 1.0 mL/min,column temperatu... |
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| Keywords: | polyacrylic acid molecular weight gel permeation chromatography(GPC) non-size exclusion effect |
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