Medicated wound dressings based on poly(vinyl alcohol)/poly(N-vinyl pyrrolidone)/chitosan hydrogels

被引：0
|
作者：
Yu, Haijun [1 ,2 ]
Xu, Xiaoyi [1 ,2 ]
Chen, Xuesi [1 ,2 ]
Hao, Jingquan [1 ,2 ]
Jing, Xiabin [1 ,2 ]
机构：
[1] State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Juin, 130022, China
[2] Graduate School, Chinese Academy of Sciences, Beijing, 100039, China
来源：
Journal of Applied Polymer Science | 2006年 / 101卷 / 04期
关键词：
Poly(vinyl alcohol) /poly(N-vinyl pyrrolidone) (PVP)/chitosan hydrogels were prepared by a lowtemperature treatment and subsequent 60Co γ-ray irradiation and then were medicated with ciprofloxacin lactate (an antibiotic) and chitosan oligomer (molecular weight = 3000 g/mol). The gel content; swelling ratio; tensile strength; and crystallinity of the hydrogels were determined. The effects of the chitosan molecular weight; the low-temperature treatment procedure; and the radiation dosage on the hydrogel properties were examined. The molecular weight of chitosan was lowered by the irradiation; but its basic polysaccharide structure was not destroyed. Repeating the low-temperature treatment and γ-ray irradiation caused effective physical crosslinking and chemical crosslinking; respectively; and contributed to the mechanical strength of the final hydrogels. The incorporation of PVP and chitosan resulted in a significant improvement in the equilibrium swelling ratio and elongation ratio of the prepared hydrogels. The ciprofloxacin lactate and chitosan oligomer were soaked into the hydrogels. Their in vitro release behaviors were examined; and they were found to follow diffusion-controlled kinetics. © 2006 Wiley Periodicals; Inc;
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Journal article (JA)
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页码：2453 / 2463
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