Journal
JOURNAL OF MATERIALS SCIENCE
Volume 44, Issue 14, Pages 3712-3718Publisher
SPRINGER
DOI: 10.1007/s10853-009-3496-6
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Funding
- National Natural Science Foundation of China [50572030, 50842027]
- Key Science Technology Program by the Ministry of Education, China [206074]
- Specialized Research Fund for the Doctoral Program of Chinese Higher Education [20060385001]
- National High Technology Research and Development Program of China [SQ2008AA03Z2470974]
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In this article, we successfully designed and fabricated polyacrylate/poly(ethylene glycol) interpenetrating network (PAC/PEG IPN) hydrogel by a two-step technique. The influences of synthesis parameters, such as crosslinker dosage and neutralization degree of PAC, on the equilibrium swelling ratio (SR) of the PAC/PEG IPN hydrogel were investigated. Based on Flory theory, a simplified experiential formula Q(H2O)(5/3) = 14.72I(-1) + 207.43 was proposed. The results revealed that the theoretical SR of the PAC/PEG IPN hydrogel was consistent with experimental value in the presence of univalent salt solution. In this case, the SR of the hydrogel can be calculated without measurement. While for multivalent salt solutions, the theoretical and experimental results are inconsistent owing to chelations between carboxylic and carboxylate groups of the PAC/PEG hydrogels and the cations in the solution.
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