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Castor oil based UV‐curable polyurethane‐acrylate interpenetrating networks
Author(s) -
Homan James G.,
Yu XueHai,
Connor Timothy J.,
Cooper Stuart L.
Publication year - 1991
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1991.070431214
Subject(s) - prepolymer , castor oil , polyurethane , differential scanning calorimetry , materials science , acrylate , methacrylate , monomer , swelling , polymer chemistry , polymer , interpenetrating polymer network , photopolymer , acrylate polymer , composite material , chemistry , organic chemistry , physics , thermodynamics
Castor oil was reacted in varying ratios with β‐isocyanatoethyl methacrylate to form a liquid urethane–methacrylate prepolymer. This prepolymer was then cured using ultraviolet radiation to form a series of base polymer networks or using various methacrylates to form conetworks. By swelling the base networks with the appropriate methacrylate monomers, semi‐ and full interpenetrating networks (IPNs) were prepared with similar compositions. All of the materials formed transparent films. Results of swelling experiments, dynamic mechanical analysis, differential scanning calorimetry, and small angle x‐ray scattering are discussed.