| 壳聚糖/纳米TiO2杂化材料的制备及抗菌性能表征 |
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| 引用本文： | 吴峰,蔡继业.壳聚糖/纳米TiO2杂化材料的制备及抗菌性能表征[J].高分子材料科学与工程,2008,24(3):148-151. |
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| 作者姓名： | 吴峰 蔡继业 |
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| 作者单位： | 1. 怀化学院化学化工系,湖南,怀化,418000;暨南大学生命科学学院化学系,广州,广东,510632
2. 暨南大学生命科学学院化学系,广州,广东,510632 |
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| 基金项目： | 国家自然科学基金资助项目(60278014)，广东省自然科学基金资助项目(36704) |
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| 摘 要： | 制备了壳聚糖/纳米TiO2杂化膜,表征了其抗菌性能,分析了影响TiO2纳米粒子在壳聚糖溶液中分散性的影响因素。FT-IR、AFM分析了杂化膜的结构与形态。表明促进TiO2颗粒良好分散有四个主要因素:(1)表面电荷的重新分布;(2)空间保护作用;(3)化学键的相互作用;(4)超声分散。抗菌实验表明壳聚糖/纳米TiO2杂化膜具有很强的抗菌性能,细菌的形态学变化具有两个显著的特点:(1)细胞内物质渗漏,在细胞周围形成了环状结构;(2)细胞表面囊泡的形成。
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| 关 键 词： | 壳聚糖 二氧化钛 杂化膜 原子力显微镜 抗菌 |
| 文章编号： | 1000-7555(2008)03-0148-04 |
| 修稿时间： | 2006年10月20 |
Preparation and Anti-Bacterium Properties of Chitosan/TiO2 Hybrid Films |
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| WU Feng,CAI Ji-ye.Preparation and Anti-Bacterium Properties of Chitosan/TiO2 Hybrid Films[J].Polymer Materials Science & Engineering,2008,24(3):148-151. |
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| Authors: | WU Feng CAI Ji-ye |
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| Affiliation: | 1.Chemistry Department,College of Huaihua,Huaihua 418008,China;2.Chemistry Department,Jinan University,Guangzhou 510632,China) |
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| Abstract: | The complexed films were prepared with different degree of deacetylation chitosan and titanium dioxide nanoparticles.The molecular interactions in chitosan and TiO2 were studied by FT-IR.The microstructure of the films and distribution of nano-particles were investigated by AFM.The results conclude that there are four factors influence the nanoparticles distribution:(1) distributions of surface charges;(2) effects of space protects;(3) interactions of chemical bonds;(4) ultrasonic distribution.The morphology and ultrastructure of the Escherichia coli were observed by AFM.There are two obvious characters:(1) cell contents begin to leak;(2) many blebs are formed on the cell surface. |
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| Keywords: | chitosan TiO2 hybrid films AFM anti-bacterium |
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