• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Macromolecular theory and simulations >Bivariate Distribution and Related Analytical Solutions for Batch Step-Growth Polymerization of AB(2)-Type Monomer
【24h】

Bivariate Distribution and Related Analytical Solutions for Batch Step-Growth Polymerization of AB(2)-Type Monomer

机译：AB（2）型单体的分批步进生长聚合的双变量分布及相关分析解

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

Based on the analytical solution for the bivariate distribution N(n,k) of the degree of polymerization n and the number of dendritic units k, it is shown that the batch step-growth polymerization of AB(2)-type monomer leads to form random hyperbranched architecture, irrespective of the magnitude of reactivity ratio r that represents the reactivity of the second B group. The bivariate distribution function enables one to obtain various useful analytic relationships for the hyperbranched architecture. The degree of branching at large n limit, DBn -> infinity, is an important property to represent the branched polymer system, rather than the average DB of the whole reaction mixture. For the case with r = 1, the value of DBn -> infinity is always 0.5, and is unchanged at any stage of batch polymerization. On the other hand, DBn -> infinity changes with the progress of polymerization for r not equal 1, but the change is not very significant for the high conversion region. The degree of branching at large k limit, DBk -> infinity, is always larger than DBn -> infinity, but the relationship DBk -> infinity = DBn -> infinity holds at 100% conversion.
机译：基于用于聚合程度N的双抗体分布N（n，k）的分析溶液N和树突状单位的数量K，显示AB（2）型单体的批量生产聚合导致形成随机超支化架构，无论代表第二B组的反应性的反应性比R的大小。双方分布函数使得能够获得超支架构的各种有用的分析关系。大n限制的分支度DBN - >无限远，是表示支化聚合物体系的重要性质，而不是整个反应混合物的平均dB。对于r = 1的情况，DBN - “无限远的值始终为0.5，并且在分批聚合的任何阶段保持不变。另一方面，DBN - > Infinity随着r不等于1的聚合进度而变化，但高转化区域的变化不是很重要。大于k限制的分支程度，dbk - >无限远，总是大于dbn - >无限远，但关系dbk - > Infinity = dbn - > Infinity在100％转换时保持。

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