• 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 >Flow-injection polymer analysis of styrenic block copolymers. II
【24h】

Flow-injection polymer analysis of styrenic block copolymers. II

机译：苯乙烯嵌段共聚物的流动注射聚合物分析。 II

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 flow-injection polymer analysis (FIPA) method for the dilute solution characterization of unsaturated styrenic block copolymers was developed. The method is rapid, works with both butadiene and isoprene comonomers, and covers a range of 0-100% styrene content in the polymer. Solutions of the polymer were introduced into a flowing mobile phase and monitored by an array of three close-coupled detectors: a right-angle laser light-scattering unit, a differential refractive index detector (DRI), and a differential pressure viscometer. In addition, a separate, dual-detector instrument was set up specifically to evaluate the styrene content by the FIPA method. In that case, the detectors were a DRI and an ultraviolet detector. Within an analysis time of a few minutes, information on molecular weight, molecular size, and comonomer composition could be obtained directly. The data were compared to those obtained from a preexisting gel permeation chromatography analysis method. (C) 2002 Wiley Periodicals, Inc. [References: 10]
机译：建立了流动注射聚合物分析（FIPA）方法，用于表征不饱和苯乙烯嵌段共聚物的稀溶液。该方法快速，可与丁二烯和异戊二烯共聚单体一起使用，并且覆盖了聚合物中0-100％的苯乙烯含量。将聚合物溶液引入流动相中，并通过三个紧密耦合的检测器阵列进行监视：直角激光散射单元，差示折光率检测器（DRI）和差压粘度计。此外，专门设置了一个单独的双检测器仪器，以通过FIPA方法评估苯乙烯含量。在那种情况下，检测器是DRI和紫外线检测器。在几分钟的分析时间内，可以直接获得有关分子量，分子大小和共聚单体组成的信息。将数据与从先前存在的凝胶渗透色谱分析方法获得的数据进行比较。 （C）2002 Wiley Periodicals，Inc. [参考：10]

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