Analysis of Unsaturated Polyester-Polyurethane Interpenetrating Polymer Networks II: Phase Separation Behavior

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The phase separation behavior of unsaturated polyester (UPE)-polyurethane (PU) interpenetrating polymer networks (IPNs) was investigated by light scattering measurements during simultaneous polymerization. The scattered light intensity change with time showed the formation of the dispersed domains, and the average domain correlation length could be calculated from the angle of maximum scattering intensity. It was noted that the dominant phase separation process was spinodal decomposition due to fast reaction. The morphology observed by the transmission electron micrographs for various process conditions showed similar results as obtained from the light scattering experiment.
Publisher
Wiley-Blackwell
Issue Date
1993-05
Language
English
Article Type
Article
Keywords

HIGH-PRESSURE; SPINODAL DECOMPOSITION; POLYSTYRENE IPNS; LINEAR BLENDS; TG BEHAVIOR; MORPHOLOGY; METHACRYLATE); MIXTURE

Citation

POLYMER ENGINEERING AND SCIENCE, v.33, no.10, pp.598 - 606

ISSN
0032-3888
URI
http://hdl.handle.net/10203/63682
Appears in Collection
CBE-Journal Papers(저널논문)
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