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Type: Artigo
Title: Study of phase separation in blends of silk fibroin and sodium alginate in solution and in solid state
Author: Lopes, Laise Maia
Moraes, Mariana Agostini de
Beppu, Marisa Masumi
Abstract: Silk fibroin (SF) and sodium alginate (SA) are natural polymers with many applications as biomaterials. It is possible to make blends with them in order to improve their properties. Those blends are partially miscible; therefore, understanding the mechanism and phase equilibrium of this system is important to better understand the interaction between these natural polymers. This work analyzed the mechanism of phase separation of SF and SA blends with different composition in solution and in the solid state (as membranes) using small angle light scattering with a He-Ne laser. Polymer interaction and conformation were investigated by Fourier-Transform Infrared Spectroscopy with Attenuated Total Reflectance (FTIR-ATR) and X-Ray Diffraction (XRD), and membrane morphology was analyzed by Scanning Electron Microscopy (SEM). SEM images showed interpenetrated globules in the matrix. Light scattering profile for blends in solution and in the solid state showed a peak of intensity suggesting that phase separation occurs by spinodal decomposition
Subject: Biopolímeros
Country: Países Baixos
Editor: Springer
Rights: Fechado
Identifier DOI: 10.1007/s10965-018-1594-3
Date Issue: 2018
Appears in Collections:FEQ - Artigos e Outros Documentos

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