• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >SURFACE MODIFICATION OF POLYURETHANE BY PLASMA-INDUCED GRAFT POLYMERIZATION OF POLY(ETHYLENE GLYCOL) METHACRYLATE
【24h】

SURFACE MODIFICATION OF POLYURETHANE BY PLASMA-INDUCED GRAFT POLYMERIZATION OF POLY(ETHYLENE GLYCOL) METHACRYLATE

机译：等离子体诱导的聚（甲基丙烯酸乙二醇酯）丙烯酸甲酯接枝聚合反应对聚氨酯的表面改性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A new approach, plasma-induced graft polymerization of poly(ethylene glycol) methacrylate (PEGMA), was used to introduce PEG graft chains with hydroxyl end groups onto a polyurethane (Tecoflex) surface. After argon plasma treatment and subsequent exposure to air, graft polymerization onto Tecoflex films was allowed to proceed in deaerated aqueous solutions of PEGMA at 60 degrees C. The virgin, plasma-treated, and grafted films were characterized comparatively by means of attenuated total reflection infrared spectroscopy, X-ray photoelectron spectroscopy, atomic force microscopy, measurement of contact angle, and protein adsorption. The Tecoflex film undergoes etching during argon plasma treatment, surface oxidation when exposed to air after plasma treatment, and surface restructuring in response to environment upon storage in air. The plasma-induced graft polymerization of PEGMA proved to be successful in introducing PEG graft chains with reactive hydroxyl end groups onto the surface. Grafted films with different surface grafting density of PEG were prepared. Grafted films with higher PEG content exhibit higher hydrophilicity, smoother topography, and lower fibrinogen adsorption. The hydroxyl end groups built onto the surface offer further possibilities of improving its biocompatibility by immobilizing bioactive molecules. (C) 1996 John Wiley & Sons, Inc. [References: 29]
机译：等离子体诱导的聚甲基丙烯酸乙二醇酯（PEGMA）接枝聚合的新方法用于将带有羟基端基的PEG接枝链引入聚氨酯（Tecoflex）表面。在氩气等离子体处理并随后暴露于空气后，允许在60°C的PEGMA脱气水溶液中进行Tecoflex膜上的接枝聚合。通过衰减的全反射红外对未处理，等离子处理和接枝的膜进行比较表征光谱，X射线光电子能谱，原子力显微镜，接触角测量和蛋白质吸附。 Tecoflex膜在氩气等离子体处理过程中会进行蚀刻，在等离子体处理后暴露于空气中时会发生表面氧化，并且在空气中存储时会响应于环境进行表面重组。事实证明，等离子体诱导的PEGMA接枝聚合可以成功地将具有反应性羟基端基的PEG接枝链引入表面。制备了不同PEG表面接枝密度的接枝膜。具有较高PEG含量的接枝膜表现出较高的亲水性，较平滑的形貌和较低的纤维蛋白原吸附。固定在表面上的羟基端基通过固定生物活性分子提供了改善其生物相容性的更多可能性。 （C）1996 John Wiley＆Sons，Inc. [参考：29]

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