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中文摘要：
在冷冻诱导相分离制备N-组氨酸壳聚糖支架（NHCS）的基础上进行二次相分离,利用不同取代度的NHCS和不同N-组氨酸壳聚糖/聚乳酸质量比制备一系列N-组氨酸壳聚糖/聚乳酸（NHCS/PLLA）支架.通过红外光谱、广角X射线衍射、热分析和扫描电镜等来表征NHCS/PLLA支架.结果表明,同一种NG组氨酸壳聚糖支架（50kD-NHCS-3）,N-组氨酸壳聚糖/聚乳酸质量比减小,支架孔隙率减小,密度增大.支架材料的孔尺寸约在12-25μm,孔隙率均大于92%,抗压强度和弹性模量分别在0.33-0.78MPa和1.75-5.28MPa之间,有望适用于软骨组织工程支架.
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