Resumo

GONZALEZ-TORRES, Maykel et al. Síntesis y caracterización de una red semi-interpenetrada de poli (3-hidroxibutirato) y acrilamida obtenida por polimerización de injerto radio-inducido. Superf. vacío [online]. 2011, vol.24, n.3, pp.96-103. ISSN 1665-3521.

Poly (3-hydroxybutyrate) (PHB) is a polymer obtained by bacteria. Semi-interpenetrating polymer network (IPN) hydrogel of bacterial poly (3-hydroxybutyrate) and acrylamide were prepared by the radiation induced graft copolymerization reaction. It was chosen the simultaneous ⁶⁰Co gamma irradiation technique. The swelling and thermal behaviors of the hydrogel were studied by means of swelling tests, differential scanning calorimetry and thermogravimetric analyses. According to the results the thermal behavior of PHB is not significantly affected by the IPN's formation. In addition fourier transform infrared studies were performed in order to demonstrate the IPN's synthesis. On the other hand, scanning electron micrograph analyses were carried out to study the IPN's morphology. The IPN's degree of cristallinity decreased with respect to PHB.

Palavras-chave : Poly(3-hydroxybutyrate); Acrylamide; Semi-interpenetrated network; Biomaterials.