Preparation of Polyacrylamide Gels Copolymerized with Methacrylamidet

Abstract

Acrylamide, N, N'-methylenediacrylamide and methacrylamide were suspended in petroleum hydrocarbon and copolymerized to give spherical porous gels in the presence of mixture of water and ethanol as a diluent. The cumulative distribution curves of the pore diameter were obtained by eluting water soluble materials, such as ethylene glycol oligomers and poly(ethyleneoxide), through a column packed with the gels.
The increasing proportion of the number of moles of methacrylamide to the number of moles in all monomer were resulted in the increase of exclusion limits. In the molar ratio of methacrylamide to acrylamide was 0.168, exclusion limit of, degree of swelling(wet-ml/ dry-m/) of, and amount of water regain(g/dry-g) of the gel were 4.1 x 104, 4.15, and 3.59, respectively. On the other hand, in the molar ratio of methacrylamide to acrylamide was O.834, exclusion limit of, degree of swelling of, and amount of water regain of the gel were 2.8 x 105, 3.77, and 3.05, respectively.