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Citation: WANG Chun-Yan, WU Zong-Hua. Effect of Molecular Weights of Polyacrylamides on Its Hofmann Reaction[J]. Chinese Journal of Applied Chemistry, ;2003, 20(8): 803-805. shu

Effect of Molecular Weights of Polyacrylamides on Its Hofmann Reaction

WANG Chun-Yan ,
WU Zong-Hua ^,

1.
Institute of Polymer Science, Fujian Normal University, Fuzhou 350007

Corresponding author: WU Zong-Hua,
Received Date: 4 December 2002
Available Online: 12 May 2003
Fund Project: 福建省科技厅国际合作项目(2002I024) (2002I024)

The Hofmann reactions of five polyacrylamides(PAM) with different molecular weights of two different concentrations were carried out to get better understanding the mechanisms of the reaction. The results show that the maximum conversion of N-chloroamides increased with molecular weights of PAM and got to the highest value at 9×10⁴, then decreased. The changes in maximum conversion of amino groups are similar to those of N-chloroamides, the maximum content of amino group of PAM studied was 97%. However, the time to reach maximum conversion of amino groups appeared to be independent of the molecular weights in the range investigated.
- polyacrylamide,
- Hofmann reaction,
- molecular weight,
- polymeric effect,
- synergetic effect
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