• 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 >SOLUTION POLYMERIZATION OF ACRYLONITRILE WITH VINYL ACIDS IN DIMETHYLFORMAMIDE
【24h】

SOLUTION POLYMERIZATION OF ACRYLONITRILE WITH VINYL ACIDS IN DIMETHYLFORMAMIDE

机译：在二甲基甲酰胺中用乙烯将丙烯腈溶液聚合

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

Solution copolymerization of acrylonitrile (AN) with various vinyl acids, i.e., acrylic acid (AA), methacrylic acid (MAA), and itaconic acid (IA), was carried out in DMF at 70 degrees C using alpha,alpha-azobisisobutyronitrile (AIBN) as an initiator with an acidic monomer of 0.012-0.092 mol %. Copolymers were characterized by FTIR, CHN analysis, H-1- and C-13-NMR, and viscometry. The reactivity ratios were calculated using Fineman-Ross and Kelen-Tudos methods. In all three systems, the value of r(1) (AN) is much less than the value of r(2). However, the r(2) (MAA) is higher than r(2) of (AA) and (IA). The reactivity ratios were calculated using Q and e schemes also. The results are in good agreement with experimentally calculated data. The tacticity and sequence length distribution of these copolymers were calculated using C-13-NMR from C=N and CH signals. It was observed that the isotacticity of acrylonitrile-itaconic acid copolymer P(AN-IA) with 8.2 mol % of a comonomer is lower than that of P(AN-MAA) with 10.3 mol % and P(AN-AA) with 7.61 mol %. (C) 1996 John Wiley & Sons. [References: 40]
机译：丙烯腈（AN）与各种乙烯基丙烯酸（AA），甲基丙烯酸（MAA）和衣康酸（IA）的溶液共聚反应是在DMF中于70摄氏度下使用α，α-偶氮二异丁腈（AIBN）进行的）作为引发剂，其具有0.012-0.092mol％的酸性单体。通过FTIR，CHN分析，H-1-和C-13-NMR以及粘度测定法表征共聚物。使用Fineman-Ross和Kelen-Tudos方法计算反应率。在所有三个系统中，r（1）（AN）的值远小于r（2）的值。但是，r（2）（MAA）高于（AA）和（IA）的r（2）。还使用Q和e方案计算反应率。结果与实验计算的数据非常吻合。这些共聚物的立构规整度和序列长度分布是使用C-13-NMR从C = N和CH信号计算得到的。观察到，共聚单体为8.2摩尔％的丙烯腈-衣康酸共聚物P（AN-IA）的等规度低于10.3摩尔％的P（AN-MAA）和7.61摩尔的P（AN-AA）的等规度。 ％。 （C）1996年John Wiley＆Sons。 [参考：40]

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