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New diene and dithiol monomers, based on aromatic imides such as benzophenone-3,3′,4,4′-tetracarboxylic diimide were synthesized and used in thiol-ene polymerizations which yield poly(imide-co-thioether)s. These linear polymers exhibit limited solubility in various organic solvents. The molecular weights of the polymers were found to decrease with increasing imide content. The glass transition temperature (Tg) of these polymers is dependent on imide content, with Tg values ranging from −55 °C (with no imide) up to 13 °C (with 70% imide). These thermal property improvements are due to the H-bonding and rigidity of the aromatic imide moieties. Thermal degradation, as studied by thermogravimetric analysis, was not significantly different to the nonimide containing thiol-ene polymers made using trimethyloylpropane diallyl ether and 3,5-dioxa-1,8-dithiooctane. It is expected that such monomers may lead to increased glass transition temperatures in other thiol-ene polymer systems as these normally exhibit low glass transition temperatures. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2013, 51, 4637–4642 |
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