Crosslinking of a polyacrylate bearing a spiroorthoester pendant group with mixtures of diglycidyl ether of bisphenol A and phosphorus‐containing glycidyl derivatives |
| |
| Authors: | J Canadell A Mantecón V Cádiz |
| |
| Institution: | 1. Departament de Química Analítica i Química Orgánica, Universitat Rovira i Virgili, Marcel.li Domingo s/n, 43007 Tarragona, Spain;2. Departament de Química Analítica i Química Orgánica, Universitat Rovira i Virgili, Marcel.li Domingo s/n, 43007 Tarragona, SpainDepartament de Química Analítica i Química Orgánica, Universitat Rovira i Virgili, Marcel.li Domingo s/n, 43007 Tarragona, Spain |
| |
| Abstract: | The cationic crosslinking of a polyacrylate bearing a spiroorthoester pendant group with mixtures of diglycidyl ether of bisphenol A and three phosphorus‐containing glycidyl derivatives was carried out with ytterbium triflate as an initiator. The curing process was monitored with Fourier transform infrared spectroscopy. The thermomechanical and thermogravimetric properties were evaluated. The glass transition temperatures of the obtained materials were, in general, above 100 °C. The incorporation of phosphorus into the network increased the limiting oxygen index values, thus improving the flame retardancy of the materials. During crosslinking, all the crosslinked polymers showed slight shrinkage that was much lower than that observed in conventional epoxy resins. © 2006 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 45: 1920–1930, 2007 |
| |
| Keywords: | cationic polymerization crosslinking flame retardance heteroatom‐containing polymers spiroorthoester ytterbium triflate |
|
|
