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Preparation and Characterization of Novel UV‐Curable Ester Methacrylate Crosslinking‐Agents and Their Structure‐Property Relationships, 2
Author(s) -
Yılmaz İnan Tülay,
Ekinci Ekrem,
Yıldız Emel,
Kuyulu Abdülkadir,
Güngör Attila
Publication year - 2001
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/1521-3935(20010201)202:4<541::aid-macp541>3.0.co;2-i
Subject(s) - acryloyl chloride , monomer , polymer chemistry , thermal stability , thermogravimetric analysis , ultimate tensile strength , moiety , materials science , fourier transform infrared spectroscopy , prepolymer , propane , chemistry , acrylate , chemical engineering , organic chemistry , polymer , polyurethane , composite material , engineering
Four, new difunctional monomers namely 2,2‐bis(4‐ethoxyacrylatephenyl)propane (HEPAAC), 2,2‐bis(4‐ethoxyacrylatephenyl)6Fpropane (HEPFAAC), 2,2‐bis(4‐ethoxyacrylate‐3,5‐dibromophenyl)propane (TB‐HEPAAC) and 5‐ tert ‐butyl‐1,3‐bis(4‐ethoxyacrylate benzoyl)benzene (tBuHEPBAC) containing acrylic moiety, which can be good candidates as x‐linking agents for UV curable coating applications, were synthesized by reacting acryloyl chloride with four different diols. The structures of the monomers thus prepared were characterized by FTIR, mass and 1 H NMR spectroscopies. Introduction of 10% of these new monomers into the UV‐curable formulations, caused different behaviors in tensile strengths and elongations, when compared with diethylene glycol diacrylate (DEGDA) containing films. Both elongation and tensile strength values were decreased for TBHEPAAC and tBuHEPBAC containing films, while the same values of the films containing HEPAAC and HEPFAAC's increased. Gel contents of the UV‐cured polymeric films were found to be between 88–98%. Thermogravimetric analysis showed that there were not appreciable changes in thermal stability of the films compared to DEGDA containing ones. On the other hand, HEPFAAC and tBuHEPAAC containing films showed increases in char yields due to the presence of F and Br in their structures. Introduction of the new difunctional monomers lowered the water absorption values of the films somewhat proportional to the methyl group content of the x‐linkers.