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Issue 9, 2012

Cyclic tetravinylsiloxanetetraols as hybrid inorganic–organic thiol-ene networks

Author affiliations

Abstract

In this work, organic-inorganic hybrid materials containing stable silanol functionalities were designed by incorporating cyclic tetravinylsiloxanetetraols into photopolymerized polymer networks via the thiol-ene reaction, with the intent of tailoring the thermal and mechanical properties of the resulting materials. The effects of the cyclic tetravinylsiloxanetetraols concentration on the thermomechanical properties and thermal stability of pentaerythritol triallyl ether/pentaerythritol tetra(3-mercaptopropionate) (APE-PETMP) and allyl isocyanurate/pentaerythritol tetra(3-mercaptopropionate) (TTT-PETMP) ternary networks were evaluated using dynamic thermomechanical analysis and thermogravimetric analysis, respectively. Photopolymerization kinetics were monitored using real-time FTIR. Interestingly, an increase in glass transition temperature was observed with the APE-PETMP networks while a decrease in glass transition temperature was observed for the TTT-PETMP networks with increasing concentration of [Vi(OH)SiO]4. These observations are discussed in terms of cross-link density and monomer rigidity.

Graphical abstract: Cyclic tetravinylsiloxanetetraols as hybrid inorganic–organic thiol-ene networks

Supplementary files

Article information


Submitted
27 Oct 2011
Accepted
06 Jan 2012
First published
20 Jan 2012

J. Mater. Chem., 2012,22, 3817-3824
Article type
Paper

Cyclic tetravinylsiloxanetetraols as hybrid inorganic–organic thiol-ene networks

B. J. Sparks, T. J. Kuchera, M. J. Jungman, A. D. Richardson, D. A. Savin, S. Hait, J. Lichtenhan, M. F. Striegel and D. L. Patton, J. Mater. Chem., 2012, 22, 3817 DOI: 10.1039/C2JM15484F

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