聚乙烯醇/淀粉复合水凝胶的辐射合成  

Radiation synthesis of composite hydrogel of poly(vinyl alcohol) and starch

作　　者：董伟[1] 刘宇光[1] 侯静[1] 周巍[1] 张晓东[1] 高潮[1] 

机构地区：[1]黑龙江省科学院技术物理研究所,哈尔滨150086

出　　处：《化工新型材料》2011年第10期125-127,共3页New Chemical Materials

基　　金：黑龙江省科学院青年创新基金项目(CX09C02)

摘　　要：通过辐射法制备聚乙烯醇/淀粉复合水凝胶,研究了辐照剂量和淀粉含量对聚乙烯醇/淀粉复合水凝胶的凝胶含量和溶胀率的影响。辐照剂量较小时,凝胶含量随着淀粉含量的增加明显降低,当辐照剂量大于40kGy时,凝胶含量随淀粉含量的增加下降平缓,溶胀率则随淀粉含量增加逐渐增大。红外结果分析表明淀粉与聚乙烯醇发生接枝反应。结果表明,通过调节淀粉含量改善聚乙烯醇水凝胶网络结构,使其作为药用缓释材料具有更好的缓释性能。Poly（vinyl alcohol）（PVA）/Starch composite hydrogel was prepared by 60Coγ-rays irradiation at room temperature.The effect of radiation dose and the content of starch on blend hydrogel were investigated.gel fraction of PVA/Starch composite hydrogels decreased obviously at low dose,however,when dose was over 40 kGy,gel fraction decreased slightly,while equilibrium degree of swelling increased with the increament of starch content.The FT-IR analysis results indicated that there existed grafting reaction in PVA/Starch composite.The crosslinking structure of Poly（vinyl alcohol） hydrogel were improved by adjusting the starch content,and having great potential application as a medical delivery materials.

关 键 词：聚乙烯醇 淀粉 辐射 

分 类 号：TQ316.3[化学工程—高聚物工业]