방사선을 이용하여 제조한 poly(vinyl alcohol)/poly(acrylic acid) 하이드로젤의 제조 및 특성
Preparation and Characterization of Poly(vinyl alcohol)/Poly(acrylic acid) Hydrogel by Radiation
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초록
Poly(vinyl alcohol) (PVA) is an interesting material with good biocompatibility, highelasticity and hydrophilic chacrateristics. In this study, crosslinked hydrogels based on PVA, andpoly(acrylic acid) (PAAc) were prepared by gamma-ray irradiation. PVA and PAAc powders weredissolved in deionized water, and then irradiated by a gamma-ray with a radiation dose of 50 kGyto make hydrogels. The hydrogels were then annealed in an oven at 120C for 10 min, 30 min and50 min under nitrogen atmosphere. The properties of a hydrogel such as gel fraction, swellingbehavior, thermogravimetric analysis (TGA) and adhesive strength as a function of PAAc contentand annealing time were investigated. The gel fraction decreases with decreasing PAAc contentand increasing annealing time. The thermal behaviors have shown different patterns according tothe annealing time. The adhesive strength increases with increasing PAAc content.
Abstract
Poly(vinyl alcohol) (PVA) is an interesting material with good biocompatibility, highelasticity and hydrophilic chacrateristics. In this study, crosslinked hydrogels based on PVA, andpoly(acrylic acid) (PAAc) were prepared by gamma-ray irradiation. PVA and PAAc powders weredissolved in deionized water, and then irradiated by a gamma-ray with a radiation dose of 50 kGyto make hydrogels. The hydrogels were then annealed in an oven at 120C for 10 min, 30 min and50 min under nitrogen atmosphere. The properties of a hydrogel such as gel fraction, swellingbehavior, thermogravimetric analysis (TGA) and adhesive strength as a function of PAAc contentand annealing time were investigated. The gel fraction decreases with decreasing PAAc contentand increasing annealing time. The thermal behaviors have shown different patterns according tothe annealing time. The adhesive strength increases with increasing PAAc content.
참고문헌 (14)
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