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Citation: JIANG Qing-Li, ZHANG Wang-Xi, LIU Jian-Jun, CAI Hua-Su. Rapid Measurement of Visocity-avervage Molecular Weight of Copolymer During Solution Polymerization[J]. Chinese Journal of Applied Chemistry, ;2000, 17(1): 102-104. shu

Rapid Measurement of Visocity-avervage Molecular Weight of Copolymer During Solution Polymerization

1.
Research Center of Carbon Fibre, Shandong University of Technology, Ji'nan 250061

Received Date: 21 June 1999
Available Online: 25 August 1999
Fund Project: 国家自然科学基金资助项目(59783002) (59783002)

The molecular weight of acrylonitrile/itaconic acid copolymer can be calculated from the intrinsic viscosities of the dilute reaction solutions directly, when the conversion was higher than 90% during the solution polymerization. Because of the sample treatment processes such as film preparing, washing, drying and redissolving were simplified, the analysis time was reduced substantially. The proposed method is more suitable for rapid analysis.The measurement error compared with common method of determination for the copolymer in DMSO by single point method was about 1%.
- acrylonitrile,
- itaconic acid,
- solution copolymerization,
- viscosity-average molecular weight determination
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