Abstract
The study of natural polymers is of great importance because of their characteristics such as biodegradability, biocompatibility and low toxicity. The production of blends with polymers is necessary to better the understanding and use of its characteristics. The system formed of sodium alginate (SA) and silk fibroin (SF) is know to be partially miscible, but there are not many studies about this system in the literature from a thermodynamics perspective. This study has as objective investigate the influence of a strong polyelectrolyte in the morphology and polymer interaction of the system formed by SF and SA. To do that, X-ray diffraction, Fourier transform infrared spectroscopy with attenuated total reflection and scanning electron microscopy was performed in 7 blends with different proportions of SF, SA, water and polystyrene sulfonate (SPS). Results show that there is an influence of the SPS in the system formed by the natural polymers when comparing the data with blends without the presence of the polyelectrolyte.
Highlights
The study of natural polymers, such as silk fibroin (SF) and sodium alginate (SA) has increased due to characteristics like biodegradability, low toxicity, and biocompatibility
We investigated the influence of a strong polyelectrolyte in the morphology and polymer interaction
Since results for different blends were similar in the analyses, the data shown are from the blend SF0,5/SA0,5/WASPS99
Summary
The study of natural polymers, such as SF and SA has increased due to characteristics like biodegradability, low toxicity, and biocompatibility. The blends of these polymers can be used as wound dressings and drug delivers devices[1]. There are some parameters that could influence in the morphological and structural characteristics of these blends, such as pH and temperature[2]. We investigated the influence of a strong polyelectrolyte in the morphology and polymer interaction.
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