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Materiale Plastice
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Materiale Plastice (Mater. Plast.), Year 2010, Volume 47, Issue 3,





CATALINA GABRIELA POTARNICHE, ZINA VULUGA, CONSTANTIN RADOVICI, SEVER SERBAN, DUMITRU MIRCEA VULUGA, MARIUS GHIUREA, VIOLETA PURCAR, VIORICA TRANDAFIR, DANA IORDĂCHESCU, MĂDĂLINA GEORGIANA ALBU Nanocomposites Based on Collagen and Na-Montmorillonite Modified with Bioactive Substances


Abstract:
Collagene-based nanocomposite membrane films were obtained by dispersing nanohybrides formed by modifying a layered silicate with quebracho and methylene blue in a collagen-gel matrix. TGA and XRD analyses proved the intercalation of active substances between the silicate layers. Thermal stability of the binary nanohybrides decreases with the increase of active substance content. Nanocomposites showed an improved thermal stability compared to collagen. Modifying the silicate with active substances influences the hydrophilicity of final nanocomposite by reducing the water vapour adsorption. Although the methylene blue is a disinfectant, it influences negatively the growth and development of the fibroblasts hence it is inappropriate for use in case of an open lesion. Quebracho is biocompatible and has a biostimulating effect on the growth and development of the fibroblasts, bioactive films thus obtained being good antiseptic and regenerating patches. Keywords: nanocomposites, montmorillonite, collagen, methylene blue, quebracho



Issue: 2010 Volume 47, Issue 3
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