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Citation: LI Gang, HAO Li-Gen, YANG Fang, ZHANG Jun-Ran, WANG Gui-Xiang. On the Gelation Kinetics of Polyacrylamide with Water Soluble Phenol-formaldehyde Resin[J]. Chinese Journal of Applied Chemistry, ;2003, 20(4): 391-393. shu

On the Gelation Kinetics of Polyacrylamide with Water Soluble Phenol-formaldehyde Resin

1.
School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130

Corresponding author: LI Gang,
Received Date: 9 July 2002
Available Online: 17 December 2002
Fund Project: 河北工业大学博士科研启动基金资助项目(230020509) (230020509)

The kinetics of gellation reaction between amphoteric polyacrylamide (APAM) and water soluble phenolformaldehyde resin has been studied.The whole gelation process could be divided into three periods:induction period,acceleration period and steady period.The accelerative increase period ranged in 3~17 days determines the incremental amount of gelling velocity and gel viscosity,and its gelling kinetics equation is η=η₀+kt^0.9 (25℃).There are two factors which are the doses of water soluble phenol formaldehyde resin as crosslinker and the molecular weight of APAM affecting the gelling velocity at temperature 40~70℃,the former is the more prominent.The gelling reaction rate constant k could be controlled in 1.57~3.13 Pa·s/d^0.9 for reaction of 0.4% APAM solution with 0.2%~0.8% resol as crosslinker at reaction temperature 50℃ and the gel viscosity being reached to the maximum values of 16.2~29.0 Pa·s.
- polyacrylamide,
- phenol formaldehyde resin,
- polymer gels,
- gelling reaction,
- kinetics
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