| 凝胶过滤色谱测定高分子量聚乙烯醇分子量和分子量分布 |
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| 引用本文： | 李宇虹.凝胶过滤色谱测定高分子量聚乙烯醇分子量和分子量分布[J].天然气化工,2003,28(1):57-59. |
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| 作者姓名： | 李宇虹 |
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| 作者单位： | 中国石化集团四川维尼纶厂,重庆,401254 |
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| 摘 要： | 用凝胶过滤色谱对高分子量聚乙烯醇分子量、分子量分布进行剖析。采用Plaquagel-OH色谱柱,0.25mol/LNaNO3,0.01mol/L Na2HPO4-NaH2PO,pH=7的缓冲溶液流动相,流速1ml/min,示差折光检测器,柱温30℃,聚环氧乙烷作标准物。该方法能显著缩短分析时间,提高准确性,可用于对高聚合度聚乙烯醇进行研究和指导生产。
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| 关 键 词： | 凝胶过滤色谱 高分子量聚乙烯醇 分子量 分子量分布 |
| 文章编号： | 1001-9219(2003)01-57-03 |
| 修稿时间： | 2002年12月2日 |
Determination of formula weight and molecular weight distribution of high polymer PVA by GFC |
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| LI Yu-hong.Determination of formula weight and molecular weight distribution of high polymer PVA by GFC[J].Natural Gas Chemical Industry,2003,28(1):57-59. |
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| Authors: | LI Yu-hong |
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| Abstract: | Formula weight and molecular weight distribution of high polymer poly( vinyl alcohol) (PVA) were determined by gel filtration chromatography( GFC) . The conditions for GFC were as follows: Plaguagd - OH chro-matographic column; eluate, a buffer solution at pH = 7, consisting of 0.25mol/L NaNO3 and 0.01mol/L Na2HPO4-NaH2PO4; flow rate 1.0 ml/min; column temperature 30℃ ; RI detector; and polyethylene oxide as standard substance. This method shortened analysis time obviously and improved accuracy, and can be applied to research and instructing production of high polymer PVA. |
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| Keywords: | gel filtration chromatography high polymer poly(vinyl alcohol) formula weight molecular weight distribution |
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