首页> 外文期刊>African Journal of Biotechnology >Synthesis and properties of carboxymethylcellulose (CMC) graft copolymer with on-off switching properties for controlled release of drug
【24h】

Synthesis and properties of carboxymethylcellulose (CMC) graft copolymer with on-off switching properties for controlled release of drug

机译:羧甲基纤维素接枝共聚物的合成及性能研究

获取原文
           

摘要

Novel biopolymer-based superabsorbent hydrogels were prepared by grafting crosslinked poly (N-vinyl pyrollidin and 2-Acrylamido-2-methyl propan sulfonic acid (PNVP-co-PAMPS) chains onto CMC backbones through a free radical polymerization method.?A proposed mechanism for superabsorbent hydrogel formation was suggested and the hydrogel structure was confirmed using FTIR spectroscopy. The morphology of the samples was examined by scanning electron microscopy (SEM). The concentration of released metronidazole loaded was monitored at 245 nm on the UV spectrophotometer. Water absorption of the hydrogel could be switched on and off swiftly by control of pH of the surrounding environment. Therefore, the synthesized hydrogels in this?study?can be used as a drug delivery system and that the drug release can be controlled by the pH of solution. The release rate of metronidazole from hydrogel at pH 7.4 was higher than that at pH 1.6, due to the increased swelling capacity of the hydrogel.
机译:通过自由基聚合法将交联的聚(N-乙烯基吡咯烷酮和2-丙烯酰胺基-2-甲基丙烷磺酸(PNVP-co-PAMPS))链接枝到CMC骨架上,制备了新型的基于生物聚合物的高吸收性水凝胶。提出了超吸收水凝胶的形成方法,并用FTIR光谱确定了水凝胶的结构,用扫描电子显微镜(SEM)检查了样品的形貌,并在紫外分光光度计上于245 nm处监测了甲硝唑的释放量。通过控制周围环境的pH值可以快速地开关水凝胶,因此,本研究中合成的水凝胶可以用作药物传递系统,可以通过溶液的pH值来控制药物的释放。在pH 7.4时,甲硝唑从水凝胶中的释放速率高于在pH 1.6时,由于水凝胶的溶胀能力提高。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号