Chemistry modification of PMMA-g-PEG copolymer.
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Data
2014
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Resumo
Copolymers are polymers consisting of different repeat units and their
production is usually motivated by the changing of polymers properties. An
important application are the transportation of drugs within the organism with the
aim of controlling the release of the substance. The synthesis of these new
copolymers is based on simple semi-synthesis and low cost. The synthetic routes are
based on the interaction of the graft copolymer (PMMA-g-PEG) with a variety of
reagents such as acetic anhydride, acetic acid, methyl iodide, sulfuric acid and
hydrochloric acid. The products from these reactions of esterification, methylation,
acetylation and halogenation will be characterized by Fourier-transforminfrared
spectroscopy (FTIR). The use of this technique allowed us to detect the main
absorption bands related to the C¼O bonds, C-Cl, R-COOR and CO, thus confirming
the efficiency of modification reactions of the graft copolymer chain.
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Palavras-chave
Differential scanning calorimeter, Graft copolymers, Chemistry modification, Infrared spectroscopy
Citação
ROSA, J. dos S. et al. Chemistry modification of PMMA-g-PEG copolymer. Macromolecular Symposia, v. 343, p. 78-87, 2014. Disponível em: <http://onlinelibrary.wiley.com/doi/10.1002/masy.201300197/abstract>. Acesso em: 20 mai. 2017.