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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
Gilsinei Marques Campese [1] ; Elias Basile Tambourgi [2] ; Marcos Rogério Guilherme [3] ; Márcia Regina de Moura [4] ; Edvani Curti Muniz [5] ; Elza Youssef Youssef [6]
Total Authors: 6
Affiliation:
[1] Universidade Estadual de Campinas. Faculdade de Engenharia Química. Departamento de Processos Químicos e Informática - Brasil
[2] Universidade Estadual de Campinas. Faculdade de Engenharia Química. Departamento de Processos Químicos e Informática - Brasil
[3] Universidade Estadual de Maringá. Departamento de Química - Brasil
[4] Universidade Estadual de Maringá. Departamento de Química - Brasil
[5] Universidade Estadual de Maringá. Departamento de Química - Brasil
[6] Universidade Estadual de Londrina. Departamento de Tecnologia de Alimentos e Medicamentos - Brasil
Total Affiliations: 6
Document type: Journal article
Source: Química Nova; v. 30, n. 7, p. 1649-1652, 2007-00-00.
Abstract

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. (AU)