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Development and Study of a Coupling Agent for Photocurable Hybrid Thiol/Ene/Cationic Formulations
Author(s) -
Ortiz Ricardo Acosta,
Valdéz Aida E. Garcia,
Duarte Lydia Berlanga,
Santos Ramiro Guerrero,
Flores Luis Rodolfo Ovando,
Soucek Mark D.
Publication year - 2008
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/macp.200800305
Subject(s) - cationic polymerization , ene reaction , polymer chemistry , moiety , monomer , polymer , copolymer , materials science , thiol , methacrylic acid , chemistry , organic chemistry , composite material
It is demonstrated that the mechanical properties of the resulting polymers can be enhanced by adding a coupling agent to a hybrid thiol/ene/cationic system. The coupling agent was a hybrid monomer with methacrylic and epoxycyclohexyl groups linked by a tetramethyldisiloxane moiety. The methacrylic group of the coupling agent reacted in a first stage with the components of the thiol/ene system obtaining a polymer functionalized with epoxycyclohexyl groups. This polymer could react further with the epoxy monomer of the cationic system to form a copolymer. The viscoelastic properties of the obtained polymers were compared by DMA, finding an increment in the storage modulus of the polymers with the coupling agent, ranging from 18 to 67%.
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