Swelling and mechanical properties of superporous hydrogels of poly(acrylamide-co-acrylic acid)/polyethylenimine interpenetrating polymer networks
作者： Dukjoon Kim , Kinam Park
DOI: 10.1016/J.POLYMER.2003.10.047
关键词: Interpenetrating polymer network 、 Compressive strength 、 Materials science 、 Polyelectrolyte 、 Self-healing hydrogels 、 Kinetics 、 Swelling 、 Chemical engineering 、 Polymer chemistry 、 Polymer 、 Polyethylenimine
摘要: Swelling and mechanical properties were investigated for superporous hydrogels (SPHs) of poly(acrylamide-co-acrylic acid)/polyethylenimine (P(AM-co-AA)/PEI) interpenetrating polymer networks (IPNs). Gelation kinetics SPHs changed significantly according to the acidic condition reactant. The compressive strength neutralized decreased monotonically with AA concentration, while maximum swelling was observed around weight fraction 0.4 all PEI concentrations. SPH samples composed high concentrations easily cracked in water due stress developed during uptake. increasing PAA because molecular entanglement network density associated ionic interaction between molecules. For non-neutralized SPHs, equilibrium uptake but increased by simple plasticization effect.
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