| 基于溶剂置换的壳聚糖水凝胶的构建及力学性能研究 |
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| 引用本文： | 叶菁芸,曾戎,屠美,赵剑豪.基于溶剂置换的壳聚糖水凝胶的构建及力学性能研究[J].功能材料,2011,42(8). |
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| 作者姓名： | 叶菁芸 曾戎 屠美 赵剑豪 |
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| 作者单位： | 暨南大学材料科学与工程系,人工器官及材料教育部工程研究中心,广东广州510632 |
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| 基金项目： | 国家自然科学基金项目主任基金研究资助项目(31040027);国家自然科学基金资助项目(30870613); 广东省产学研基地建设专项资助项目(2009B090200004); 广东省科技人员服务企业行动资助项目(2009GJE00008) |
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| 摘 要： | 采用碱液置换丙二醇的方法制备物理交联壳聚糖水凝胶,研究了碱液浓度及三聚磷酸钠（TPP）离子交联预处理对凝胶结构和力学性能的影响。SEM观察结果表明水凝胶微观结构为富有纳米纤维的三维网络结构,且离子交联预处理在一定程度上会影响水凝胶内部结构的形成。无侧限压缩测试和动态力学分析（DMA）结果显示,未经离子交联的水凝胶在NaOH溶液浓度≤4mol/L时,力学性能随碱溶液浓度增大而增加,在NaOH溶液浓度为4mol/L时获得最优的力学性能;TPP交联后再经NaOH溶液处理的水凝胶其力学性能有所下降,当NaOH溶液浓度为2mol/L时可获得最优的力学性能。采用的2种物理交联方式在水凝胶形成过程中具有竞争关系。
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| 关 键 词： | 壳聚糖 物理交联 水凝胶 力学性能 |
Study on the construction and mechanical properties of chitosan hydrogels based on solvent exchange |
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| YE Jing-yun,ZENG Rong,TU Mei,ZHAO Jian-hao.Study on the construction and mechanical properties of chitosan hydrogels based on solvent exchange[J].Journal of Functional Materials,2011,42(8). |
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| Authors: | YE Jing-yun ZENG Rong TU Mei ZHAO Jian-hao |
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| Affiliation: | YE Jing-yun,ZENG Rong,TU Mei,ZHAO Jian-hao(Department of Materials Science and Engineering,Artificial Organs and Materials Engineering Research Center of Ministry of Education,Jinan University,Guangzhou 510632,China) |
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| Abstract: | Chitosan physical hydrogels were obtained by replacing 1,2-propanediol with alkaline solution,and the effect of the concentration of alkali and ionic crosslinked pretreatment with tripolyphosphate(TPP) on the microstructure and the mechanical properties of hydrogels was investigated.The microstructure of hydrogels showed by scanning electron microscope(SEM) was a three-dimensional network full of nano-fibers.The internal structure of the hydrogels could be affected by ionic crosslinked pretreatment.The mech... |
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| Keywords: | chitosan physically crosslinked hydrogel mechanical properties |
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