...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Macromolecular Science. Pure and Applied Chemistry >Preparation and Surface Properties of Fluorine-Containing Diblock Copolymers PLMA-Block-PFAEA
【24h】

Preparation and Surface Properties of Fluorine-Containing Diblock Copolymers PLMA-Block-PFAEA

机译：含氟二嵌段共聚物PLMA-Block-PFAEA的制备及表面性能

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 series of fluorine-containing diblock copolymers based on lauryl methacrylate and 1H,1H,2H,2H-perfluoroalkyl acrylate have been prepared by atom transfer radical polymerization (ATRP). The preparation process of PLMA-Br macroinitiators was controlled within a reasonable time corresponding to the ln [M0]/[Mt]time plot of the reaction. FTIR, 1H-NMR, GPC and fluorine-element analysis (FEA) were used to characterize the synthesized block copolymers. The solid surface activity of these polymers was demonstrated by contact angle measurement. The polymer films prepared by block copolymers with more than three fluorinated units showed low dispersion force contributions to the surface energy indicating the presence of the fluorinated block at the surface. The surface activity in solutions was measured by drop-weight method. Ii is interesting to find, when the fluorine weight percentage is controlled constant, that PLMA-b-PFAEA with larger molecular size is more prominent in exploiting the fluorinated structure to reduce the surface tension of solutions. The block copolymer's ability in reducing surface tension of solutions also depends on the type of solvent.
机译：通过原子转移自由基聚合（ATRP）制备了一系列基于甲基丙烯酸月桂酯和1H，1H，2H，2H-全氟丙烯酸烷基酯的含氟二嵌段共聚物。将PLMA-Br大分子引发剂的制备过程控制在与反应的ln [M0] / [Mt]时间图相对应的合理时间内。 FTIR，1 H-NMR，GPC和氟元素分析（FEA）用于表征合成的嵌段共聚物。这些聚合物的固体表面活性通过接触角测量证明。由具有三个以上氟化单元的嵌段共聚物制备的聚合物膜显示出对表面能的低分散力贡献，表明在表面上存在氟化嵌段。溶液中的表面活性通过滴重法测量。发现有趣的是，当氟的重量百分比被控制为恒定时，具有更大分子尺寸的PLMA-b-PFAEA在利用氟化结构降低溶液的表面张力方面更加突出。嵌段共聚物降低溶液表面张力的能力还取决于溶剂的类型。

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