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Orientation of an Amphiphilic Copolymer to a Lamellar Structure on a Hydrophobic Surface and Implications for CO 2 Capture Membranes
Author(s) -
Park Cheol Hun,
Lee Jae Hun,
Jung Jung Pyo,
Lee Wooseop,
Ryu Du Yeol,
Kim Jong Hak
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201811450
Subject(s) - amphiphile , materials science , lamellar structure , polymer chemistry , membrane , allylamine , chemical engineering , copolymer , ethylene glycol , polymer , chemistry , polyelectrolyte , composite material , biochemistry , engineering
Abstract The structural orientation of an amphiphilic crystalline polymer to a highly ordered microphase‐separated lamellar structure on a hydrophobic surface is presented. It is formed by the surface graft polymerization of poly(ethylene glycol)behenyl ether methacrylate onto poly(trimethylsilyl) propyne in the presence of allylamine. In particular, allylamine plays a pivotal role in controlling the crystalline phase, configuration, and permeation properties. The resulting materials are effectively used to improve the CO 2 capture property of membranes. Upon the optimization of the reaction conditions, a high CO 2 permeability of 501 Barrer and a CO 2 /N 2 ideal selectivity of 77.2 are obtained, which exceed the Robeson upper bound limit. It is inspiring to surpass the upper bound limit via a simple surface modification method.