Water-Soluble, Biocompatible Polyphosphazenes with Controllable and pH-Promoted Degradation Behavior.
J Polym Sci A Polym Chem
; 52(2): 287-294, 2014 Jan 15.
Article
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| MEDLINE
| ID: mdl-24729657
ABSTRACT
The synthesis of a series of novel, water-soluble poly(organophosphazenes) prepared via living cationic polymerization is presented. The degradation profiles of the polyphosphazenes prepared are analyzed by GPC, 31P NMR spectroscopy, and UV-Vis spectroscopy in aqueous media and show tunable degradation rates ranging from days to months, adjusted by subtle changes to the chemical structure of the polyphosphazene. Furthermore, it is observed that these polymers demonstrate a pH-promoted hydrolytic degradation behavior, with a remarkably faster rate of degradation at lower pH values. These degradable, water soluble polymers with controlled molecular weights and structures could be of significant interest for use in aqueous biomedical applications, such as polymer therapeutics, in which biological clearance is a requirement and in this context cell viability tests are described which show the non-toxic nature of the polymers as well as their degradation intermediates and products.
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MEDLINE
Idioma:
En
Revista:
J Polym Sci A Polym Chem
Año:
2014
Tipo del documento:
Article
País de afiliación:
Austria