Agradecimentos: This work was supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq-Brazil, grant numbers N°401297/2014-4 and N°421745/2016-9). Eronildo Alves Pinto Junior is grateful to Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES-Brazil, scholarship...

Agradecimentos: This work was supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq-Brazil, grant numbers N°401297/2014-4 and N°421745/2016-9). Eronildo Alves Pinto Junior is grateful to Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES-Brazil, scholarship N°3300 3017). José L. Dávila is grateful to Secretaría de Educación Superior, Ciencia, Tecnología e Innovación (SENESCYT-Ecuador, scholarship N°AR2Q-8590)

Rheological behavior of mixtures containing nanocrystalline cellulose (CNC) and alginate was studied. A shear thinning behavior was observed in all samples, which was progressively enhanced as a function of CNC and alginate concentrations. Electrostatic interactions between anionic alginate chains...

Rheological behavior of mixtures containing nanocrystalline cellulose (CNC) and alginate was studied. A shear thinning behavior was observed in all samples, which was progressively enhanced as a function of CNC and alginate concentrations. Electrostatic interactions between anionic alginate chains and anionic CNC rods promote physical gelation at small CNC concentrations (4 wt%), resulting in soft gels with pronounced shear-thinning and solid-like behavior. Next, hydrogels were obtained using the internal gelation method, and the crosslinking kinetics were monitored by time sweep tests. The experimental data were well described by a modified Hill equation. Fourier transform infrared spectroscopy (FTIR) was performed in order to analyze the hydrogen bonding interactions that occur between CNC rods and alginate chains, and the alginate ionic crosslinking

CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ

401297/2014-4; 421745/2016-9

COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPES

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