丝素
自愈水凝胶
壳聚糖
肿胀 的
流变学
材料科学
组织工程
弹性模量
化学
动态力学分析
丝绸
化学工程
弹性(物理)
杨氏模量
聚合物
生物医学工程
复合材料
高分子化学
生物化学
工程类
医学
作者
Jiaoyan Liu,Bin Yang,Minhui Li,Jing Li,Ying Wan
标识
DOI:10.1016/j.carbpol.2019.115335
摘要
Thiolated chitosan (CS-NAC) was synthesized and the selected CS-NAC was used together with silk fibroin (SF) to produce dual network CS-NAC/SF hydrogels. The CS-NAC/SF solutions with formulated compositions were able to form hydrogels at physiological temperature and pH. Rheological measurements showed that elastic modulus of some CS-NAC/SF gels could reach around 3 kPa or higher and was much higher than their respective viscous modulus, indicating that they behaved like strong gels. Deformation measurements verified that CS-NAC/SF gels had well-defined elasticity. The optimized CS-NAC/SF gels exhibited jointly enhanced properties in terms of strength, stiffness and elasticity when compared to the gels resulted from either CS-NAC or SF. Examinations of dry CS-NAC/SF gels revealed that they were highly porous with well-interconnected pore features. Cell culture demonstrated that CS-NAC/SF gels supported the growth of chondrocytes while effectively maintaining their phenotype. Results suggest that these dual network gels have promising potential in cartilage repair.
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