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4582489 
Journal Article 
Degradation Behaviour of Hydrolyzed Polyacrylamide in Solution Induced by Autoxidation of Pyrogallol 
Xin, HP; Yin, S; Ao, D; Wang, XJ; Li, RY; Zhang, J; Tan, YB 
2014 
Yes 
Asian Journal of Chemistry
ISSN: 0970-7077
EISSN: 0975-427X 
26 
11 
3155-3160 
WOS:000343761100007 
The degradation of hydrolyzed polyacrylamide in solution was studied using pyrogallol. This degradation could be induced without complicated treatments expect adding pyrogallol to hydrolyzed polyacrylamide solutions. Moreover, hydrolyzed polyacrylamide presented alkaline while progallol autoxidation could be effectively accelerated in alkaline environment. The decrease of apparent viscosity and weight-average molar mass as well as the aggregation radius of hydrolyzed polyacrylamide were evident in the degradation procedure. The mechanism of pyrogallol autoxidation was also investigated by UV-visible spectrum which indicated that superoxide radical generated in the pyrogallol autoxidation could attract the stone bones inducing the degradation of hydrolyzed polyacrylamide. 
Hydrolyzed polyacrylamide; Pyrogallol; Autoxidation; Degradation