Control of amphiphilic block copolymer morphologies using solution conditions
Control of amphiphilic block copolymer morphologies using solution conditions
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DOI：
10.1140/epje/e2003-00002-5
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发表时间：
2003-01-01
影响因子：
1.8
通讯作者：
Eisenberg, A
中科院分区：
文献类型：
--
作者：
Choucair, A;Eisenberg, A
众所周知，嵌段共聚物聚集体的形态取决于聚合物性质，例如分子量、相对嵌段长度和重复单元的化学性质。最近，我们已经表明，如果允许聚集体在溶液中自组装，那么除了上述因素之外，还可以通过调整溶液条件来实现对聚集体结构的高度控制。诸如溶剂混合物中的水含量、溶剂性质和组成、添加剂（离子、表面活性剂和均聚物）的存在和聚合物浓度的因素被成功地用于控制聚集体的形状和尺寸。在本文中，我们回顾了一系列的研究，在我们的小组，以显示如何解决方案的性能可以控制从一个给定的共聚物制备的聚集体的架构。的控制机制解释在每个属性上的力量，管理任何给定的形态，即核心链的拉伸，电晕链排斥和界面张力的形成的效果。
It is well known that the morphology of block copolymer aggregates depends on polymer properties such as the molecular weight, the relative block length, and the chemical nature of the repeat unit. Recently, we have shown that if aggregates are allowed to self-assemble in solution, then in addition to the above factors, a high degree of control over the aggregate architecture can be achieved by adjusting the solution conditions. Factors such as the water content in the solvent mixture, the solvent nature and composition, the presence of additives (ions, surfactants, and homopolymer) and the polymer concentration were successfully employed to control the aggregate shape and size. In this paper, we review a series of studies performed in our group to show how solution properties can control the architecture of aggregates prepared from a given copolymer. The control mechanism is explained in terms of the effect of each property on the forces that govern the formation of any given morphology, namely the core-chain stretching, corona-chain repulsion and interfacial tension.