Regensburg 2019 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 49: Hydrogel und Microgel
CPP 49.3: Talk
Wednesday, April 3, 2019, 18:00–18:15, H18
Incorporation of conductive materials in stimuli-responsive hydrogel films synthetized by ionizing radiation for the development of biomedical sensor applications — •Jesus Eduardo Lopez-Barriguete1,2, Gabriel Flores-Rojas1,2, Felipe Lopez-Saucedo1, Takashi Isoshima2, and Emilio Bucio1 — 1Departamento de Química de Radiaciones y Radioquímica, Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Circuito exterior, Ciudad Universitaria, Ciudad de México 04510, México — 2Nano Medical Engineering Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
Stimuli-responsive systems of co-polymeric hydrogels with a specific temperature (38 and 39 *C) response has been prepared and modified to elaborate adaptable films for biomedical and nanotechnology applications. The principal thermo-responsive polymer is N-isopropyl acrylamide (PNIPAAm) with the addition of dimethyl acrylamide (DMAAm) for temperature modification, methyl methacrylate (MMA), and ethoxyethyl methacrylate (EEM) for mechanical improvements. Ionizing radiation technique (gamma rays) allows synthesizing different systems at a dose radiation of 50 kGy. The matrix modification with silver and copper incorporation was by chemical synthesis. The conductive properties of these materials and biocompatibility could permit the addition of electrical properties to the films admitting electrical changes by the internal structure variation of the polymeric chains due to the temperature variability. All the samples were characterized by FT-IR, DSC, SEM, and EDX.