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Citation: GUO Liping, CHEN Li, DU Xiaodi, ZHANG Anfu, LEI Jiaheng. Preparation of Standard Polyacrylic Acid Samples for Gel Permeation Chromatography[J]. Chinese Journal of Applied Chemistry, ;2011, 28(4): 443-447. doi: 10.3724/SP.J.1095.2011.00255 shu

Preparation of Standard Polyacrylic Acid Samples for Gel Permeation Chromatography

1.
Department of Chemistry, Wuhan University of Technology, Wuhan 430070

Corresponding author: LEI Jiaheng,
Received Date: 5 May 2010
Available Online: 20 August 2010
Fund Project: 交通部西部交通建设科技项目(2007319811130) (2007319811130)

Eight standard polyacrylic acid(PAA) samples with different molecular mass were obtained via an isothermal precipitation grading method by using dioxane as solvent and petroleum ether as precipitator.Their peak molecular mass and molecular mass distributions were determined from an asymptotic calibration method.The results showed that the average relative errors for M_η are about 7% and 9% compared with those obtained using viscometry end-group titration,respectively.When these standard samples were used for determining the molecular mass as well as their distributions for actual PAA samples,the average relative error is less than 10%,which is superior to that using polyethylene glycol(PEG) as standard samples(about 30%).The PAA standard samples in gel permeation chromatography(GPC) might be extended to other anionic polyelectrolytes with similar structure for the same purpose.
- polyacrylic acid,
- molecular mass standard sample,
- GPC,
- precipitation grading,
- asymptotic calibration method
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