聚乙烯醇/纳米羟基磷灰石/丝素蛋白复合水凝胶的制备及其性能研究

被引:11
作者
伏钰
陈丽
周莉
王泽巩
胡惠媛
罗仲宽
机构
[1] 深圳大学化学与环境工程学院
基金
广东省自然科学基金;
关键词
丝素蛋白; 反复冷冻解冻法; 人工角膜; 多孔结构; 水凝胶;
D O I
暂无
中图分类号
TQ427.26 []; R318.08 [生物材料学];
学科分类号
100103 [病原生物学];
摘要
本文以聚乙烯醇(PVA)、纳米羟基磷灰石(n-HA)和丝素蛋白(SF)为原料,采用物理共混法、反复冷冻解冻法和NaCl粒子制孔法制得了具有三维结构的PVA/n-HA/SF多孔复合水凝胶,以作为人工角膜支架材料。测试了这种多孔复合材料的含水率、拉伸强度和断裂伸长率,并对其进行了红外谱图、X射线衍射光谱、热重及电子扫描显微镜分析。结果表明,丝素蛋白的添加量增加时,多孔复合水凝胶的含水率相应提高,含水率稳定在75~82%之间;其拉伸强度在0.43~1.00MPa之间,断裂伸长率在183.76~237.53%之间,可以达到人体正常状态下眼压要求,其中复合水凝胶的最佳配比为:PVA:SF:n-HA=10:5:1。;IR和XRD分析表明复合水凝胶在物理交联过程中,各种成分均匀复合,无化学键变化;扫描电镜显示该水凝胶材料具有均匀的三维多孔结构。
引用
收藏
页码:684 / 689
页数:6
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