In situ crosslinking of chitosan and formation of chitosan-silica hybrid membranes with using γ-glycidoxypropyltrimethoxysilane as a crosslinking agent
In situ crosslinking of chitosan and formation of chitosan-silica hybrid membranes with using γ-glycidoxypropyltrimethoxysilane as a crosslinking agent
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DOI：
10.1016/j.polymer.2004.08.006
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发表时间：
2004-09-16
期刊：
影响因子：
4.6
通讯作者：
Lai, JY
中科院分区：
文献类型：
--
作者：
Liu, YL;Su, YH;Lai, JY
用γ -甘氧基丙基三甲氧基硅烷（GPTMS）在壳聚糖上进行交联，原位生成壳聚糖-硅杂化膜。通过Si-29核磁共振、扫描和透射电子显微照片观察了形成的二氧化硅结构。能量色散x射线si作图分析证实了二氧化硅在壳聚糖聚合物中的均匀分散。制备的壳聚糖-二氧化硅杂化材料具有较好的热稳定性和较低的水中溶胀度。交联反应后壳聚糖膜的亲水性保持不变。该方法为制备交联壳聚糖和壳聚糖-二氧化硅杂化材料提供了方便的途径，在生物材料和分离膜等方面具有潜在的应用前景。(C) 2004年Elsevier Ltd.出版
Crosslinking on chitosan was conducted with gamma-glycidoxypropyltrimethoxysilane (GPTMS) with in situ formation of chitosan-silica hybrid membranes. The formed silica structure was observed with Si-29 NMR, scanning, and transmission electronic microphotograghy. Energy dispersive X-ray Si-mapping analysis demonstrated the homogeneous dispersion of silica in chitosan polymer domains. The formed chitosan-silica hybrid materials exhibited improved thermal stability and low degree of swelling in water. The hydrophilicity of chitosan membranes was maintained after the crosslinking reaction. This approach provided a convenient way to prepare crosslinked chitosan and chitosan-silica hybrid materials and the materials were potentially applied in biomaterials and separation membranes. (C) 2004 Published by Elsevier Ltd.