Preparation and characterization of soy protein films reinforced with cellulose nanofibers obtained from soybean by-products
- González, Agustín
- Gastelu, Gabriela
- Barrera, Gabriela
- Ribotta, Pablo Daniel
- Alvarez Igarzabal, Cecilia Ines
DOIAbstract
In this paper, we report the preparation of nanofibers obtained from low-cost agro-industrial by-products (soybean hulls and pods) and their use as nano reinforcers of soy protein films. From hulls, we obtained white and stable in-time aqueous dispersions of cellulose nanofibers of about 20 nm wide and 500 nm long and a hydrodynamic diameter of 269 nm, with a marked increase in the crystalline index as compared to raw material. Filmogenic solutions of soy proteins were prepared using glycerol as a plasticizer and different amounts of cellulose nanofibers (0; 10; 20 and 40% in relation to the amount of soy protein). The rheological behavior of filmogenic solutions containing nanofibers suggests an interaction between matrix and reinforcement...
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