Aggregation in living polymer solutions by light and neutron scattering : a study of model ionomers
Aggregation in living polymer solutions by light and neutron scattering : a study of model ionomers
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光和中子散射在活性聚合物溶液中的聚集：模型离聚物的研究
DOI：
10.1021/ma00118a031
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发表时间：
1995
期刊：
影响因子：
5.5
通讯作者：
My Lin
中科院分区：
文献类型：
--
作者：
L. Fetters;N. P. Balsara;Js Huang;H. S. Jeon;K. Almdal;My Lin
采用小角中子散射和动态、静态光散射相结合的方法评价了苯中苯乙烯基和二烯基锂基团的缔合行为。两种类型的疏脂活性中心被发现聚集成二聚体，二聚体反过来可以自组装产生大规模的结构。对于二烯基锂体系，没有发现四聚体聚集体存在的证据。对大尺度结构的分析表明它们是长形椭球体。因此，这些模型离聚体体系表现出二嵌段共聚物和表面活性剂风格的行为，以产生圆柱形胶束。
Small angle neutron scattering in combination with dynamic and static light scattering has been used to evaluate the association behavior of the styryl- and dienyllithium head groups in benzene. Both types of lipophobic active centers were found to aggregate as dimers which in turn can self-assemble to yield large scale structures. For the dienyllithium systems no evidence for the presence oftetrameric aggregates was found. The assay of the large scale structures revealed them to be prolate ellipsoids. Thus, these model ionomer systems exhibit diblock copolymer and surfactant style behavior in their capacity to generate cylindrical micelles.