In situ monitoring gelation process of N,N-dimethylacrylamide by refractive index technique

Lihui Weng, Xianju Zhou, Xianmin Zhang, Jian Xu, Lina Zhang

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11 Scopus citations


In situ refractive index technique was used to study the gelation process in the free-radical cross-linking copolymerization (RCC) of N,N-dimethylacrylamide with N,N′-methylenebisacrylamide as the cross-linker. The change of refractive index was measured and used to monitor the gelation process. The influence of different polymerization conditions on the gelation process, such as monomer, cross-linker and initiator concentrations was investigated and discussed in detail. The kinetic model under steady-state conditions was employed to determine the monomer consumption rate during the gelation process.

Original languageEnglish (US)
Pages (from-to)6761-6765
Number of pages5
Issue number25
StatePublished - Oct 28 2002

Bibliographical note

Funding Information:
The National Natural Science Foundation of China (Grant No. 29774036 and 29904007) and PPLAS Foundation of the Chinese Academy of Sciences are gratefully acknowledged for the financial support to this work.

Copyright 2018 Elsevier B.V., All rights reserved.


  • Gelation
  • Hydrogel
  • In situ refractive index


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