Mechanical properties of semi-interpenetrating polymer network hydrogels based on poly(2-hydroxyethyl methacrylate) copolymer and chitosan |
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Authors: | Young A Han Eun Mi Lee Byung Chul Ji |
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Institution: | (1) Department of Advanced Organic Materials Science and Engineering, Kyungpook National University, Daegu, 702-701, Korea;(2) Department of Textile System Engineering, Kyungpook National University, Daegu, 702-701, Korea |
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Abstract: | Semi-interpenetrating polymeric network (semi-IPN) hydrogels based on poly(2-hydroxyethyl methacrylate) (PHEMA) and poly(2-hydroxyethyl
methacrylate-co-sodium methacrylate) P(HEMA-co-SMA)], and chitosan with different molecular weights were prepared by crosslinking
with ethylene glycol dimethacrylate (EGDMA) and poly(ethylene glycol) diacrylate (PEGDA) and their gelation time, water content,
mechanical properties, and morphology were investigated. In consideration of the influence of the molecular weight of chitosan,
there is no big difference in the water content, while tensile properties and compressive modulus increased as the molecular
weight of chitosan increased. The water content increased and tensile properties and compressive modulus decreased with increasing
SMA concentration. Considering the effect of the crosslinking agent, PEGDA had higher water content and lower tensile and
compressive moduli than EGDMA. It is suggested that PHEMA/chitosan and P(HEMA-co-SMA)/chitosan semi-IPN hydrogels with different
structures and physical properties can be prepared depending on the molecular weight of chitosan, the copolymerization with
SMA, and the crosslinking agent type. |
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Keywords: | Semi-interpenetrating polymeric network (semi-IPN) hydrogel PHEMA P(HEMA-co-SMA) Chitosan Tensile and compressive properties |
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