Square lamellar structure having phase-separated microdomain in H-shaped block copolymer thin film

Square lamellar structure having phase-separated microdomain in H-shaped block copolymer thin film
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H型嵌段共聚物薄膜中具有相分离微区的方形层状结构

DOI:
10.1002/marc.200800210
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发表时间:
2008-08
影响因子:
4.6
通讯作者:
Han, Yanchun
Han, Yanchun
中科院分区:
化学3区
文献类型:
--
作者:
Li, Binyao;Wei, Yuhan;Huang, Weihuan;Pan, Caiyuan;Han, Yanchun

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研究了H型嵌段共聚物(聚乙二醇主链和聚苯乙烯支链(PS)(2)PEG(PS)(2))在薄膜中的形态。旋涂后得到一种特殊的正方形薄片,其表面具有相分离的微畴。实验温度在片层的形成过程中起着关键作用。共聚物首先自组装成方形层状胶束,由于PEG的结晶性,具有不完整的结晶核。
The morphology of a H-shaped block copolymer (poly(ethylene glycol) backbone and polystyrene branches (PS)(2)PEG(PS)(2)) in a thin film has been investigated. A peculiar square lamella that has a phase-separated microdomain at its surface is obtained after spin coating. The experimental temperature plays a critical role in the lamellar formation. The copolymer first self-assembles into square lamellar micelles with an incomplete crystalline core due to the crystallizability of PEG.
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