光交联聚乙烯醇-苯乙烯基吡啶盐缩合物/细菌纤维素凝胶的制备与表征  

Preparation and Characterization of Cross-Linked Polyvinyl Alcohol Bearing Styrylpyridinium Group/Bacterial Cellulose Gels

作　　者：王静[1] 王清清[1] 吕鹏飞[1] 魏取福[1] 黄机质[1] 

机构地区：[1]江南大学生态纺织教育部重点实验室,江苏无锡214122

出　　处：《高分子材料科学与工程》2015年第10期180-184,共5页Polymer Materials Science & Engineering

基　　金：江苏省产学研联合创新基金(BY2012068);国家自然科学基金资助项目(51203064)

摘　　要：通过紫外光交联与冷冻干燥的方法制备不同比例的聚乙烯醇-苯乙烯基吡啶盐缩合物(PVA-SbQ)/细菌纤维素(BC)复合膜。采用扫描电子显微镜对复合膜表面形貌进行表征;采用紫外分光光度计表征不同照射时间PVA-SbQ的交联程度;借助傅里叶变换红外光谱仪、热失重分析仪对两相复合材料的结构进行研究;通过DCAT21表面张力仪、MTT测试法对该复合材料的表面亲水性及生物相容性进行探讨。结果表明,PVA-SbQ与BC之间具有良好的相容性,且两者在复合膜体系中形成了良好的界面结合;随着PVA-SbQ比例的逐渐增加,复合凝胶表面逐渐变得平滑;紫外光交联后,复合膜表面亲水性有所降低,单位面积吸水量提高;细胞活性测试证明了BC与PVA-SbQ无细胞毒性,具有良好的生物相容性。综合以上结论可知,这种材料在生物医用材料领域中具有良好的应用前景。In this work,polyvinyl alcohol bearing styrylpyridinium group（PVA-SbQ）/bacterial cellulose（BC）composite gel with different mass ratio of PVA-SbQ were prepared via UV cross-linking and freeze drying.Morphologies of composite gels were characterized by SEM,the degree of cross-linked PVA-SBQ under different exposure time was characterized by UV spectra,the structure of two-phase composite materials was characterized by FT-IR,TGA.Finally the surface hydrophilicity and biocompatibility of composite materials were discussed through DCAT21 surface tension meter and MTT tests.The results indicate that PVA-SbQ and BC have a good compatibility,both the composite film has formed a good interface combination in the system;as the concentration of PVA-SbQ improves,the surface of composite nanofibers film becomes smoothly;after the UV cross-linking,the surface hydrophilicity of composite films decreases,the water absorption of per unit area is improved;MTT test proves that the BC and PVA-SbQ have no cytotoxicity,the composite films have good biocompatibility.Based on the above conclusion,the materials have good application prospects in the field of biomedical materials.

关 键 词：细菌纤维素 聚乙烯醇-苯乙烯基吡啶盐 光交联 水凝胶 

分 类 号：TQ316.312[化学工程—高聚物工业]