Novel pattern formation in blends of asymmetric ABC triblock terpolymers

被引：0
|
作者：
Abetz, Volker [1 ,2 ]
Jiang, Shimei [1 ,3 ]
Göpfert, Astrid [1 ]
机构：
[1] Makromolekulare Chemie II, Universität Bayreuth, 95440 Bayreuth, Germany
[2] Institut Für Chemie, Universität Potsdam, 14415 Potsdam, Germany
[3] Key Lab. Supramolecular Struct. Mat., Jilin University, Changchun 130012, China
来源：
E-Polymers | 2004年
关键词：
Block copolymers - Morphology - Phase separation - Polymer blends - Polystyrenes - Pyroelectricity - Superlattices - Surface tension - Synthesis (chemical) - Transmission electron microscopy;
D O I：
10.1515/epoly.2004.4.1.421
中图分类号：
学科分类号：
摘要：
A series of polystyrene-block-poly(1,2-butadiene)-block-poly(2-vinyl- pyridine) (SBV) triblock terpolymers were used to prepare blends with symmetric polystyrene-block-poly(2-vinylpyridine) (SV) and poly(2-vinylpyridine)-block- poly-(cyclohexyl methacrylate) (VC) diblock copolymers. Morphological characterization was carried out by transmission electron microscopy. These triblock terpolymers self-assemble into various core-shell type or lamellar morphologies. In the SBV/SV blends, macrophase separation between the two block copolymers, continuous centrosymmetric lamellae and stacks of non-centrosymmetric lamellae with anti-parallel orientation were found. In the blends of SBV/VC, macrophase separation was never observed, what is due to the specific interactions between S and C domains. These systems showed among other morphologies also a cylindrical morphology in which rings surround the cylinders.
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