Journal
POLYMER BULLETIN
Volume 65, Issue 9, Pages 905-916Publisher
SPRINGER
DOI: 10.1007/s00289-010-0302-1
Keywords
Azobenzene; Chromophores; Methyl methacrylate; Copolymers; Reactivity ratios; Side-chain moiety
Categories
Funding
- Romanian Ministry of Education Research [71-029, 31-056]
- Romanian National Council for Scientific Research in Higher Education [PN-II-ID-2008-2]
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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 H-1-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 degrees C and thermal stabilities up to 306 degrees C.
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