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- W2073960839 abstract "PAA networks have been prepared by crosslinking copolymerization of acrylamide (AA) and N,N′-methylen-bis-acrylamide (BA) in water. The degree of swelling was measured in the range v2=0–0.16 as a function of crosslinker proportion, C (%w/w) and total concentration, CT (g/100 ml). The swelling of two networks with BA contents of 3% and 10% were measured as a function of temperature in the range 10–30°C. The interpretation of elastic and swelling data in terms of the scaling law |fph*|=Av2m, shows a transition from a good solvent regime to a collapsed state for the polymer chains, when the crosslinker proportion is around 5 to 7%. Results of elastic and swelling measurements were used to determine the χ parameter. A different dependence of χ with v2 was found for gels with BA contents below and above 5–7%. The enthalpic contribution to the interaction parameter χH was calculated from swelling experiments as a function of temperature. The results show that when the BA proportion is increased, the enthalpic interaction parameter at infinite dilution gets closer to the one of poly(N-methyl-acrylamide)." @default.
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- W2073960839 date "1989-06-01" @default.
- W2073960839 modified "2023-10-10" @default.
- W2073960839 title "Effect of Crosslinker on Swelling and Thermodynamic Properties of Polyacrylamide Gels" @default.
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- W2073960839 doi "https://doi.org/10.1295/polymj.21.467" @default.
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