Synthesis and characterization of side-chain poly(methacrylate)s bearing new azo-moieties |
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| Authors: | Florica Adriana Nicolescu Valentin Victor Jerca Dumitru Mircea Vuluga Dan Sorin Vasilescu |
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| Affiliation: | (1) Centre for Organic Chemistry Costin D. Nenitescu, Romanian Academy, 202B Spl. Independentei, CP 35-108, 060023 Bucharest, Romania;(2) University “POLITEHNICA” of Bucharest Department of Polymer Science, 149 Calea Victoriei, 010072 Bucharest, Romania |
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| Abstract: | New side-chain poly(methacrylate)s with azo moieties were prepared by free radical copolymerization, starting from methyl
methacrylate (MMA) and some original azo-monomers. The chromophore content was evaluated from 1H-NMR spectroscopy and elemental analyses; all structures exhibited a high content of azobenzene units. UV–Vis measurements
have also supported this fact. Reactivity ratios for the methacrylate systems and their corresponding Q–e values were calculated based on several initial feed compositions (MMA and the newly synthesized azo-monomers) using an integral
method with its appropriate software. The polymers were also characterized by FTIR, SEC and DSC-TGA techniques. The coloured
poly(methacrylate)s exhibited glass transition temperatures between 141 and 168 °C and thermal stabilities up to 306 °C. |
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