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Thermo- and pH-sensitive hydrogels functionalized with thiol groups

AutorMontero-Rama, M. P.; Liras, Marta ; García Ballesteros, Olga; Quijada-Garrido, Isabel
Palabras clavepH-sensitive hydrogels
Thiolated polymers
Swelling
Thermo-sensitive hydrogels
Fecha de publicación2014
EditorElsevier
CitaciónEuropean Polymer Journal 63: 37-44 (2014)
ResumenTacking into account the great potential of hydrogels bearing thiol functionalities, in this work we report the synthesis of thiolated hydrogels by free radical polymerization of (i) a thermo-responsive monomer, 2-(2-methoxyethoxy)ethyl methacrylate (MEO2MA); (ii) a lower ratio of a monomer having protected thiol group, 2-(acetylthio)ethyl methacrylate (AcSEMA) and (iii) a small proportion of tetraethylene glycol dimethacrylate (TEGDMA) as crosslinker. Subsequently, deprotection of thioacetate groups, by incubating the samples in basic solutions, allows obtaining hydrogels with free thiol groups. After this treatment, the pH dependence of the thiol-thiolate equilibrium makes the thermal response of novel P(MEO2MA-co-SEMA) strongly modulated by the pH.
URIhttp://hdl.handle.net/10261/111607
DOI10.1016/j.eurpolymj.2014.11.044
Identificadoresdoi: 10.1016/j.eurpolymj.2014.11.044
issn: 0014-3057
e-issn: 1873-1945
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