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。
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.
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
2003年第1期57-59,共3页
Natural Gas Chemical Industry
关键词
测定
凝胶过滤色谱
高分子量聚乙烯醇
分子量
分子量分布
gel filtration chromatography
high polymer poly(vinyl alcohol)
formula weight
molecular weight distribution.
