...
首页> 外文期刊>ACS Macro Letters >Atom Transfer Radical Polymerization of Acrylic and Methacrylic Acids: Preparation of Acidic Polymers with Various Architectures
【24h】

Atom Transfer Radical Polymerization of Acrylic and Methacrylic Acids: Preparation of Acidic Polymers with Various Architectures

机译:丙烯酸和甲基丙烯酸的原子传递自由基聚合:用各种架构制备酸性聚合物

获取原文
获取原文并翻译 | 示例
           

摘要

The preparation of poly(acrylic acid) (PAA) with tailored architecture and morphology is important for the design of advanced polymer materials. Cu-catalyzed atom transfer radical polymerization (ATRP) of AA is challenging due to the tendency of dormant chains to undergo an intramolecular lactonization reaction with consequent loss of chain-end functionalities, as previously reported for ATRP of methacrylic acid (MAA). In addition, AA can coordinate to the Cu catalyst. Moreover, the lower ATRP reactivity of AA relative to MAA enhances side reactions during polymerizations. These issues were overcome by adjusting the composition of the catalytic system, the polymerization setup, and the initiator nature. AA conversion >70-80% was obtained in 5 h, producing PAA with D approximate to 1.4. Multifunctional water-soluble initiators provided PAA and PMAA with telechelic and star-shaped architectures. Block copolymers of MAA and AA confirmed the retention of chain-end functionalities during ATRPs.
机译:具有定制建筑和形态的聚(丙烯酸)(PAA)的制备对于先进的聚合物材料的设计是重要的。由于先前报道,AA的催化原子转移自由基聚合(AARP)AA的AA的挑战是挑战,如前所述对甲基丙烯酸(MAA)的ATRP据报道。此外,AA可以与Cu催化剂协调。此外,AA相对于MAA的较低的ATRP反应性增强了聚合期间的副反应。通过调节催化系统,聚合设置和引发剂性质的组成来克服这些问题。 AA转化率> 70-80%在5小时内获得,生产PAA,D近似为1.4。多官能水溶性引发剂提供PAA和PMAA,具有遥控和星形架构。 MAA和AA的嵌段共聚物证实了在ATRPS期间的链末官能团的保留。

著录项

  • 来源
    《ACS Macro Letters》 |2020年第5期|共7页
  • 作者

  • 作者单位
  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 有机化学;
  • 关键词

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