Castor oil based UV-curable polyurethane-acrylate interpenetrating networks

✍ Scribed by James G. Homan; Xue-Hai Yu; Timothy J. Connor; Stuart L. Cooper

• Publisher: John Wiley and Sons
• Year: 1991
• Tongue: English
• Weight: 605 KB
• Volume: 43
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1991.070431214

✦ Synopsis

Castor oil was reacted in varying ratios with P-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.