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Reactive compatibilization in phase separated interpenetrating polymer networks
Author(s) -
Alekseeva Tatiana,
Lipatov Yuri,
Grihchuk Sergey,
Babkitali
Publication year - 2004
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200450633
Subject(s) - materials science , interpenetrating polymer network , polyurethane , polymer , polystyrene , viscoelasticity , phase (matter) , compatibilization , polymer chemistry , ethylene glycol dimethacrylate , chemical engineering , relaxation (psychology) , polymer blend , composite material , polymerization , copolymer , chemistry , organic chemistry , methacrylic acid , psychology , social psychology , engineering
The effects of compatibilizing additives (monomethacrylic ester of ethylene glycol (MEG) and oligo‐urethane‐dimethacrylate (OUDM)) on the kinetics of interpenetrating polymer network (IPN) formation based on cross‐linked polyurethane and linear polystyrene and its influence on the microphase separation, viscoelastic and thermophysical properties have been investigated. It was established, that various amounts (3‐10 mass%) of the additive MEG and 20 mass% OUDM introduced into the initial reaction system prevent microphase separation in the IPN. In the course of the reaction the system undergoes no phase separation up to the end of reaction, as follows from the light scattering data. The viscoelastic properties of modified IPN are changed in such a way that instead of two relaxation maxima characteristic of phase‐separated system, only one relaxation maximum is observed, what is result of the formation of compatible IPN system. The position of this relaxation transition depends on the system composition and on the reaction conditions.