info:eu-repo/semantics/article
Morphology and properties of neutralized chitosan-cellulosenanocrystals biocomposite films
Registro en:
Carbohydrate Polymers
10.1016/j.carbpol.2016.09.031
Autor
Corsello, Flavia Anahí
Bolla, Patricia Araceli
Anbinder, Pablo
Serradell, María de los Ángeles
Amalvy, Javier
Peruzzo, Pablo
Institución
Resumen
Chitosan/cellulose nanocrystals (CH-CN) films were obtained by casting of dispersions, and treated with NaOH for neutralization proposes. The composition of films was varied from 1 to 10 wt.% of CN. Changes in the morphology of the systems were correlated with the different properties studied. FTIR revealed the presence of a weak interaction between the polymer matrix and nanofiller, confirmed by a slightly increase in thermal stability. SEM images suggested that incorporating CN amounts higher than 3 wt.% generates phase-segregated systems, and SAXS showed that CH avoid the typical organization of CN at concentrations below 5 wt.%. Improved performance against water was obtained in composite materials comparing to the pure polymer matrix, as well as CH and CH-CN films did not show antibacterial activity demonstrating that remnant acetic acid, when no neutralization step is done, plays an important role in this property. Fil: Corsello, Flavia Anahí. INIFTA (Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas). UNLP-CONICET; Argentina Fil: Bolla, Patricia Araceli. CINDECA (Centro de Investigación y Desarrollo en Ciencias Aplicadas “Dr. Jorge J. Ronco”). UNLP—CONICET. UNAJ (Universidad Nacional Arturo Jauretche); Argentina Fil: Anbinder, Pablo. IFIMAT (Instituto de Física de Materiales Tandil). UNCPBA. CIFICEN (UNCPBA-CICPBA-CONICET); Argentina Fil: Serradell, María de los Ángeles. UNAJ (Universidad Nacional Arturo Jauretche). UNLP (Universidad Nacional de La Plata). Cátedra de Microbiología, Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas; Argentina Fil: Amalvy, Javier. UNLP (Universidad Nacional de La Plata). INIFTA (Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas). CONICET. CIDEPINT (Centro de Investigación y Desarrollo en Tecnología de Pinturas) CONICET/CICPBA. UTN (Universidad Tecnológica Nacional). CITEMA (Centro de Investigación y Desarrollo en Ciencia y Tecnología de Materiales); Argentina Fil: Peruzzo, Pablo. UNAJ (Universidad Nacional Arturo Jauretche). INIFTA (Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas). UNLP-CONICET; Argentina Peer Reviewed