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Competition Between Motion Constraint and Aggregation of Macromolecular Chains in Poly(vinyl methyl ether)/Poly(ethylene oxide) Aqueous Solution During Phase Transition
Author(s) -
Yang Kun,
Yang Yu Zhao,
Hu Cheng Long,
Huang Yun Yun,
Zhang Wen Kai,
Chen Xu Dong,
Zhang Ming Qiu
Publication year - 2012
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201200090
Subject(s) - ethylene oxide , polymer chemistry , ether , aqueous solution , phase (matter) , macromolecule , materials science , poly ethylene , phase transition , glass transition , chemical engineering , chemistry , polymer , thermodynamics , ethylene , organic chemistry , copolymer , physics , composite material , biochemistry , catalysis , engineering
Resonance light scattering (RLS) technique was applied to study macromolecular entanglements in highly dilute poly(vinyl methyl ether) (PVME)/poly(ethylene oxide) (PEO) solution during phase transition process. Temperature dependences of RLS intensities of PVME, PEO and PVME/PEO solutions were recorded. In addition, simulated temperature dependence of RLS intensity of PVME/PEO solution was drawn supposing there was no interaction between PEO and PVME. Comparison between the measured with the simulated results indicated that there were obvious differences in RLS intensities and transition temperatures. The present work proved the existence of entanglements during phase separation in highly dilute solution. Moreover, a model was proposed to describe the entanglement behavior.