Mechanicals resistance of thermosensitive hydrogels consisting of alginate-Ca2+/PNIPAAm, type semi-IPN

作者:Campese Gilsinei Marques*; Tambourgi Elias Basile; Guilherme Marcos Rogerio; de Moura Marcia Regina; Muniz Edvani Curti; Youssef Elza Youssef
来源:Quimica Nova, 2007, 30(7): 1649-1652.
DOI:10.1590/S0100-40422007000700028

摘要

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 degrees C 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.

  • 出版日期2007