Effect of azidation and UV cross-linking of poly(epichlorohydrin) and poly[(ethylene oxide)-ran-(epichlorohydrin)] on gas transport properties
作者： Bahadir N. Gacal , Volkan Filiz , Sergey Shishatskiy , Silvio Neumann , Jan Wind
DOI: 10.1016/J.MEMSCI.2014.04.050
关键词: Epichlorohydrin 、 Polymer 、 Chemistry 、 Base (chemistry) 、 Nitrene 、 Oxide 、 Glass transition 、 Polymer chemistry 、 Copolymer 、 Ethylene oxide
摘要: Abstract Poly(epichlorohydrin) homopolymer (H-Hydrin) and poly[(ethylene oxide)- ran -(epichlorohydrin)] copolymer (C-Hydrin) are successfully chemically modified via azidation chemistry characterized by 1 H-NMR, 13 C-NMR, FT-IR, GPC, DSC TGA. UV cross-linking reaction is performed for Hydrin polymers DSC, TGA, gel content analysis. Gas transport properties of the initial polymers, their derivatives cross-linked nitrene in presence irradiation measured. The H-Hydrin homopolymers show higher permeabilities CO 2 H than unmodified but lower /N , /CH 4 selectivities. Likewise, C-Hydrin copolymers have while maintaining similar increased gas after modification base on decrease glass transition temperatures ( T g s) which lead them to polymer chain mobility flexibility resulting diffusivity. After highly selectivities decreased observed.
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