2009•Unpublished venueRequires access
Monomer partitioning behavior in acrylamide aqueous two-phase polymerization in poly (ethylene glycol) aqueous solution
Shan Guorong
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Abstract
The partition of acrylamide(AM)in poly(acrylamide)(PAM)-poly(ethylene glycol)(PEG)-H_2O aqueous two-phase system was systemically studied through measuring the AM concentration in each phase by the improved bromating method.It was found that the monomer partition coefficient decreased with the increase of PEG concentration and PEG molecular weight,and with the decrease of PAM concentration and PAM molecular weight.Furthermore,the monomer partition coefficient decreased at first with rising temperature and then turned to increase when the temperature increased sequentially.Based on this study,the monomer partition evolution in the process of AM aqueous two-phase polymerization in the PEG aqueous solution was investigated.At the same time,the effects of PEG and initial monomer concentrations as well as the polymerization temperature on the monomer partition in the process of AM aqueous two-phase polymerization in the PEG aqueous solution were also studied.