• 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 >Role of acrylic acid in the synthesis of core-shell fluorine-containing polyacrylate latex with spherical and plum blossom-like morphology
【24h】

Role of acrylic acid in the synthesis of core-shell fluorine-containing polyacrylate latex with spherical and plum blossom-like morphology

机译：丙烯酸在合成球形和梅花状形态的核壳含氟聚丙烯酸酯胶乳中的作用

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

The core-shell fluorine-containing polyacrylate latex was successfully synthesized by two-stage semicontinuous emulsion copolymerization of methyl methacrylate (MMA), butylacrylate (BA), acrylic acid (AA), and dodecafluoroheptyl methacrylate (DFMA). The fluorine-containing polyacrylate latex was characterized by Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), dynamic light scattering (DLS), zeta potential, thermal gravimetric analysis (TGA), differential scanning calorimetry (DSC). The effects of AA content on monomer conversion, polymerization stability, particle size, corsslinking degree, carboxyl groups distributions (latex surface, aqueous phase or buried in latex), as well as mechanical properties and water absorption rate of latex film were investigated. The obtained fluorine-containing polyacrylate latex exhibited core-shell structure with a particle size of 120-150 nm. The introduction of AA was beneficial for the increase of monomer conversion and the polymerization stability, and had little effects on the mechanical property of latex film. However, the hydrophilicity of AA made the water resistance of latex film get bad. With the increase of AA content, the carboxyl groups preferred to distribute on aqueous phase, and the possibility of homogeneous nucleation increased and more oligomers particles were formed. Moreover, the oligomers would distribute to the latex and continued to grow up, making the latex morphology changed from spherical to plum blossom-like. The core-shell latex had two T-g corresponding to the rubber polyacrylate core and hard fluorine-containing polyacrylate shell, and the latex film possessed excellent thermal stability. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42527.
机译：通过甲基丙烯酸甲酯（MMA），丙烯酸丁酯（BA），丙烯酸（AA）和甲基丙烯酸十二氟庚基酯（DFMA）的两步半连续乳液共聚，成功合成了核-壳含氟聚丙烯酸酯胶乳。通过傅立叶变换红外光谱（FTIR），透射电子显微镜（TEM），动态光散射（DLS），ζ电位，热重分析（TGA），差示扫描量热法（DSC）对含氟聚丙烯酸酯胶乳进行了表征。研究了AA含量对单体转化率，聚合稳定性，粒径，固联度，羧基分布（胶乳表面，水相或被胶乳掩埋），胶乳膜的力学性能和吸水率的影响。所获得的含氟聚丙烯酸酯胶乳显示出粒径为120-150nm的核-壳结构。引入AA有利于提高单体转化率和聚合稳定性，对乳胶膜的机械性能影响很小。但是，AA的亲水性使乳胶膜的耐水性变差。随着AA含量的增加，羧基优选分布在水相上，并且均相成核的可能性增加，并且形成了更多的低聚物颗粒。而且，低聚物会分布到乳胶中并继续长大，从而使乳胶形态从球形变为梅花状。核-壳胶乳具有两个T-g，分别对应于橡胶聚丙烯酸酯核和硬质含氟聚丙烯酸酯壳，并且胶乳膜具有优异的热稳定性。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，42527。

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