• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Acta biomaterialia >Hyper-branched poly(poly(ethylene glycol)methacrylate)-grafted surfaces by photo-polymerization with iniferter for bioactive interfaces.
【24h】

Hyper-branched poly(poly(ethylene glycol)methacrylate)-grafted surfaces by photo-polymerization with iniferter for bioactive interfaces.

机译：通过具有引发剂的光引发剂进行光聚合，将超支化的聚（聚（甲基丙烯酸乙二醇酯））接枝表面用于生物活性界面。

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 hyper-branched surface in which three species of architectures were constructed as stem chain, branched stem and twig chain-grafted branched chain of poly(poly(ethylene glycol)methacrylate) (poly(PEGMA)) by photo-polymerization using dithiocarbamyl group (DC) as iniferter was prepared and characterized. For these surfaces, radical copolymerization of styrene and an iniferter-activated chain that was previously synthesized was performed for using as base materials for surface coating. On a DC-activated surface, hyper-branched poly(PEGMA) was introduced by photo-polymerization and dithiocarbamylation. All modified surfaces were analyzed by X-ray photoelectron spectroscopy (XPS) and water contact angle measurements. Our results demonstrated that a highly hyper-branched graft architecture of poly(PEGMA) can be constructed on PU surface by photo-polymerization using dithiocarbamyl group as iniferter, in which first, second and third generation gave stem chain, branched chain and twig chain of poly(PEGMA), respectively. Our hyper-branched surfaces could be regulated by photo-irradiation time and might be controlled by feed amounts or other reaction conditions. This highly dense architecture of PEG chain with hydrophilicity and chain mobility, grafted on surface, is expected to be effectively utilized in bio-implantable substrates or micro- or nano-patterned surfaces for immobilization of bioactive molecules in biomedical fields.
机译：一种新的超支化表面，其中通过使用二硫代氨基甲酰基进行光聚合，构建了三种结构形式的聚（聚（乙二醇）甲基丙烯酸酯）（聚（PEGMA））的主链，支链和细枝链接枝的支链。 （DC）作为引发剂的制备和表征。对于这些表面，进行苯乙烯和先前合成的引发剂活化的链的自由基共聚，以用作表面涂层的基础材料。在DC活化的表面上，通过光聚合和二硫代氨基甲酰化引入超支化聚（PEGMA）。通过X射线光电子能谱（XPS）和水接触角测量来分析所有改性的表面。我们的结果表明，可以使用二硫代氨基甲酰基作为引发剂，通过光聚合在PU表面构建高度聚支的聚（PEGMA）接枝结构，其中第一代，第二代和第三代给出了聚苯乙烯的干链，支链和细枝链。聚（PEGMA）。我们的超支化表面可以通过光辐照时间来调节，也可以通过进料量或其他反应条件来控制。嫁接在表面上的这种具有亲水性和链移动性的PEG链的高密度结构，有望被有效地用于生物可植入基质或微米或纳米图案表面中，以将生物活性分子固定在生物医学领域。

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