Resistência mecânica de hidrogéis termo-sensíveis constituídos de Alginato-Ca2+ / PNIPAAm, tipo Semi-IPN

Química Nova

Gilsinei Marques Campese¹  Elias Basile Tambourgi¹  Marcos Rogério Guilherme²  Márcia Regina De Moura²  Edvani Curti Muniz²  Elza Youssef Youssef² 

[1] ,Universidade Estadual de Campinas Faculdade de Engenharia Química Departamento de Processos Químicos e InformáticaCampinas SP ,Brasil

关键词: hydrogels;    alginates;    PNIPAAm;   

DOI  :  10.1590/S0100-40422007000700028

来源: SciELO

【 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 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.

【 授权许可】

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