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水溶性壳聚糖光聚合水凝胶的制备研究

水溶性壳聚糖光聚合水凝胶的制备研究
周应山
徐卫林

武汉纺织大学材料科学与工程学院,武汉市洪山区纺织路1号,430073

光聚合可注射型水凝胶具有生理条件下原位成型、反应热低和微创等优点,使其在生物
医学领域中获得了广泛的应用,包括防止血栓、防止术后组织粘连,以及药物传送、细胞包
埋、生物传感器的涂层等。目前,用于制备光聚合可注射型水凝胶的高分子一般是甲基丙烯
酰化、丙烯酰化、肉桂酸酰化和叠氮化的合成高分子和天然高分子,如聚乙二醇[1]、透明质
酸[2]、壳聚糖等。其中,壳聚糖由于具有优良的生物相容性、生物可降解性、抗菌性和促进
自然组织再生等活性,使其成为组织工程支架材料中最有应用前景的生物大分子之一。
Preparation of Photocrosslinking Chitosan Hydrogel
ZHOU Yingshan
XU Weilin
College of Materials Science and Engineering, Wuhan Textile University, Wuhan 430073

Abstract: 
Photopolymerized injectable hydrogels are attractive for a number of tissue engineering applications,
especially for use as tissue barriers to prevent thrombosis and restenosis following vascular injury 
and post-operative adhesion formation, or for use as scaffolds for regeneration of soft tissuesbecause 
of the ability to form these materials in situ in a minimally invasive manner and in mild enough 
condition, which have good adhesion and conformance to the targeted tissue. A number of synthetic 
and natural photopolymerizable polymers including PEG acrylate derivatives, hyaluronic acid 
derivatives and chitosan derivatives have been investigated for developing in situ gelling systems.
Among these polymers, chitosan has been considered to be one of the most promising 
biomacromolecules for tissue engineered scaffolds, due to its excellent biological properties such as 
biodegradability,biocompatibility, antibacterial and wound-healing activity. In this research a novel 
water soluble chitosan derivative (methacryloyloxy) ethyl carboxyethyl chitosan(MAOECECS) as a 
photocrosslinkable hydrogel precursor was synthesized by Michael addition reaction between - NH2
of chitosan and C=C of acrylate. And then MAOECECS was blended with a photoinitiator and water,
and UV irradiated to create hydrogels.

Keywords: Chitosan ; Photopolymerization ; Hydrogel ; Injection

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