Hydrogen bonding strength effect on self-assembly supramolecular structures of diblock copolymer/homopolymer blends

Shih-Chi Tsai; Yung-Chih Lin; En-Li Lin; Yeo-Wan Chiang; Shiao-Wei Kuo

doi:10.1039/C6PY00195E

Hydrogen bonding strength effect on self-assembly supramolecular structures of diblock copolymer/homopolymer blends

Shih-Chi Tsai,^a Yung-Chih Lin,^a En-Li Lin,^a Yeo-Wan Chiang^a and Shiao-Wei Kuo*^a

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* Corresponding authors

^a Department of Materials and Optoelectronic Science, Center for Functional Polymers and Supramolecular Materials, National Sun Yat-Sen University, Kaohsiung, Taiwan
E-mail: kuosw@facuty.nsysu.edu.tw

Abstract

In this study we investigated the steric hindrance effect on the hydrogen bonding strength and self-assembly supramolecular structures of the poly(styrene-b-vinylphenol) (PS-b-PVPh) diblock copolymer when blended with the homopolymers poly(4-vinylpyridine) (P4VP) and poly(2-vinylpyridine) (P2VP). Each of these PS-b-PVPh/P4VP and PS-b-PVPh/P2VP blends underwent a sequence of order–order morphological transitions with wet-brush behavior from lamellae to hexagonally packed cylindrical to spherical structures. Interestingly, we observed a bicontinuous gyroid structure only in the more strongly hydrogen bonding PS-b-PVPh/P4VP blend. Furthermore, the PS-b-PVPh/P4VP blend exhibited its order–order morphological transitions at relatively low homopolymer concentrations and did not display a two-phase region at relatively high homopolymer concentrations. Thus, differences in the steric bulk of the homopolymers P4VP and P2VP affected their hydrogen bonding with the diblock copolymer PS-b-PVPh and, therefore, influenced the self-assembled structures formed from their blends.

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Publication details

The article was received on 02 Feb 2016, accepted on 02 Mar 2016 and first published on 02 Mar 2016

Article type: Paper

DOI: 10.1039/C6PY00195E

Citation: Polym. Chem., 2016,7, 2395-2409

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Hydrogen bonding strength effect on self-assembly supramolecular structures of diblock copolymer/homopolymer blends

S. Tsai, Y. Lin, E. Lin, Y. Chiang and S. Kuo, Polym. Chem., 2016, 7, 2395
DOI: 10.1039/C6PY00195E
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Polymer Chemistry

Hydrogen bonding strength effect on self-assembly supramolecular structures of diblock copolymer/homopolymer blends

Abstract

Supplementary files

Publication details

Hydrogen bonding strength effect on self-assembly supramolecular structures of diblock copolymer/homopolymer blends

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