合成纤维

2015, v.44;No.322(12) 37-41

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凝胶色谱法测定聚丙烯腈聚合物的相对分子质量及其分布
Determination of Molecular Weight and its Distribution of Polyacrylonitile with Gel Permeation Chromatography Method

韩风
HAN Feng

摘要(Abstract):

通过一系列的试验,确定了最佳的凝胶色谱试验条件:采用含有0.025 mol/L KNO_3的DMF为流动相;样品质量浓度为1 mg/m L,进样量200μL;柱温采用80℃,采用窄分布的聚苯乙烯为标样绘制标准曲线,然后采用纯PAN标样校正仪器。该方法快速准确,具有良好的重现性,可满足生产和科研的需要。
A series of tests are carried out to confirme the best test-conditions of GPC for PAN:using DMFsolvent with 0.025 mol/L KNO_3 as eluant,concentration of the sample is 1 mg/m L,injection volume is 100 μL,column oven temperature is 80 ℃.Even so,using polystyrene with narrow distribution draws standardcurve,then using pure PAN with wide distribution calibrates the instrument.This method is fast and accu-rate,and has good reproducibility,can meet the needs of production and scientific research.

关键词(KeyWords): 凝胶色谱法;聚丙烯腈;相对分子质量;相对分子质量分布
gel permeation chromatography;polyacrylonitrile;molecular weight;molecular weight distribution

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 韩风
HAN Feng

DOI: 10.16090/j.cnki.hcxw.2015.12.011

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