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Polymer blends from polyurethane and poly(methyl methacrylate) by reaction injection molding
Author(s) -
Kircher K.,
Mrotzek W.,
Menges G.
Publication year - 1984
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760241206
Subject(s) - materials science , polyurethane , monomer , methyl methacrylate , polyol , polymer , curing (chemistry) , interpenetrating polymer network , composite material , methacrylate , prepolymer , phase (matter) , polymer chemistry , organic chemistry , chemistry
The simultaneous production of polyurethane (PUR) and polymethyl methacrylate (PMMA), starting from a mixture of polyol, polyisocyanate, and vinyl monomer, results in 2‐phase polymer alloys. A simultaneous crosslinking of the PMMA is unable to prevent phase separation during the curing reaction; interpenetrating polymer network (IPN) structures were not found, Grafting the PMMA onto the PUR through the incorporation of 2‐hydroxyethylacrylate resulted in single‐phase systems. Various material combinations did not show, with a relatively high PMMA content, any poorer properties than the straight PUR. A major advantage of incorporating low‐viscosity vinyl monomers lies in the fact that high‐viscosity polyurethane starting components that are otherwise difficult or impossible to process can be processed here without problem.