Artículos de revistas
Resistência mecânica de hidrogéis termo-sensíveis constituídos de Alginato-Ca2+ / PNIPAAm, tipo Semi-IPN
Mechanicals resistance of thermosensitive hydrogels consisting of alginate-Ca2+ / PNIPAAm, type Semi-IPN
Registro en:
Química Nova. Sociedade Brasileira de Química, v. 30, n. 7, p. 1649-1652, 2007.
0100-4042
S0100-40422007000700028
10.1590/S0100-40422007000700028
Autor
Campese, Gilsinei Marques
Tambourgi, Elias Basile
Guilherme, Marcos Rogério
Moura, Márcia Regina de
Muniz, Edvani Curti
Youssef, Elza Youssef
Institución
Resumen
Thermosensitive hydrogels were synthesized using alginate-Ca2+ in association with a thermosensitive polymer, such as PNIPAAm. The mechanical properties of the hydrogels were determined measuring the maximum tension of deformation. With the increase of the temperature by 25 to 40 ºC above the LCST the chains of PNIPAAm collapsed, dragging the alginate net and diminishing the size of the pores. The decrease in the size of the pores of the hydrogel was followed by an increase in the mechanicals resistance of the material. 1649 1652 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)