121st General Meeting of the KCS

Type Poster Presentation
Area Polymer Chemistry
Room No. Event Hall
Time 4월 20일 (금요일) 11:00~12:30
Code POLY.P-16
Subject Internal structure of poly(ethylene oxide) network controlled by drying-wetting process
Authors Jungju Ryu, Daewon Sohn1,*
Neutron Science Center, Korea Atomic Energy Research Institute, Korea
1Department of Chemistry, Hanyang University, Korea
Abstract Crystallization and entanglements of crosslinked poly(ethylene oxide) were investigated in terms of the concentrations of polymer solution which produce the gel network under exposure of gamma-ray. Crystalline state was established from the solution with 5 nm sized chain entanglements. Long period of lamellar distance and the thickness of crystalline and amorphous layers in the crystalline films were analyzed from the small angle X-ray scattering patterns. The wide distribution and non-uniformity of the lamellae were also observed in the elongated and swollen films. Comparing with the chain length between crosslinks, the possible positions of crosslinks in lamellar stacks were discussed. The results reveal the influence of the crosslinks on crystallization and demonstrate the phenomena at a conjunction to from crosslinking and crystalline state.
E-mail jungjuryu@naver.com