• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>PMSE Symposia >Study on the Ordered Structures of Poly(styrene-b-vinyl4pyridine) in a Solution State by using Small Angle X-ray Scattering and the GIFT
【24h】

Study on the Ordered Structures of Poly(styrene-b-vinyl4pyridine) in a Solution State by using Small Angle X-ray Scattering and the GIFT

机译：用小角度X射线散射和礼品研究溶液状态下聚（苯乙烯-B-乙烯基4吡啶）的有序结构

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Poly(styrene-b-vinyl4pyridine) (PS-b-P4VP), which is a class of nonionic amphiphilic block copolymers, has been vital in the study of micellar properties, due to its high quality and relatively easy access to the block copolymers (commercially available). In addition, the same refractive index (of each block polymer) simplifies the evaluation of light scattering data, and the sufficiently different solution properties of PS and P4VP, in the block copolymer, allow for the formation of the micelles in most solvents. Furthermore, due to the presence of a strong absorbing block, PS-b-P4VP is often used to study the adsorption onto solid surfaces. PS-b-P4VP can easily be converted into corresponding water soluble polyelectrolyte copolymers by quaternization of the P4VP block. The characterization of PS-b-P4VP, with varying chain lengths in the toluene solution, revealed that most micelles behave like concentric spheres while some others, mainly those with a high P4VP content and higher molecular weights, were found to be non-spherical in shape. It is also known that PS-b-P4VP is in the strongly segregation regime and its critical micelle concentration (cmc) is very low and the size of the micelles remained unchanged in the concentration ranging between 10~(-3) and 5×10~(-3) g/ml. To our knowledge, however, studies regarding the ordered structures of PS-b-P4VP have not been reported although it is an important class of block copolymers. In this paper, for the first time, we will report on the structures of the hierarchical ordered mesophases and their subunits (micelles) of PS-b-P4VP in a toluene solution, which were studied by using small angle X-ray scattering (SAXS), transmission electron microscopy (TEM) and GIFT methods.
机译：聚（苯乙烯-B-乙烯基4吡啶）（PS-B-P4VP），其是一类非离子两亲嵌段共聚物，对胶束性能的研究至关重要，因为其高质量和对嵌段共聚物相对容易进入（可商购））。另外，相同的折射率（每个嵌段聚合物）简化了光散射数据的评价，以及嵌段共聚物中PS和P4VP的足够不同的溶液性质，允许在大多数溶剂中形成胶束。此外，由于存在强烈的吸收块，PS-B-P4VP通常用于将吸附物研究到固体表面上。通过P4VP嵌段的季铵化，可以容易地将PS-B-P4VP容易地转化为相应的水溶性聚电解质共聚物。 PS-B-P4VP的表征具有不同链条长度的甲苯溶液，揭示了大多数胶束表现得像同心球，而其他其他胶束主要发现具有高P4VP含量和更高分子量的同心球体，因此是非球形的形状。还已知PS-B-P4VP处于强偏析状态，其临界胶束浓度（CMC）非常低，胶束的尺寸在10〜（3）和5×10之间的浓度范围内保持不变〜（-3）g / ml。然而，为了我们的知识，尚未报告关于PS-B-P4VP的有序结构的研究，尽管它是一类重要的嵌段共聚物。在本文中，我们首次将报告通过使用小角度X射线散射（SAX）研究的甲苯溶液中PS-B-P4VP的分层有序中间蛋白酶及其亚基（胶束）的结构。 ），透射电子显微镜（TEM）和礼品方法。

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