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Cellulose nanoparticles as rheology modifiers for complex fluids

Grant number: 16/04514-7
Support type:Program for Research on Bioenergy (BIOEN) - Regular Program Grants
Duration: August 01, 2016 - January 31, 2019
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
Principal Investigator:Juliana da Silva Bernardes
Grantee:Juliana da Silva Bernardes
Home Institution: Centro Nacional de Pesquisa em Energia e Materiais (CNPEM). Ministério da Ciência, Tecnologia, Inovações e Comunicações (Brasil). Campinas , SP, Brazil
Associated grant(s):17/50133-8 - Gel behavior of cellulose nanofiber smart materials, AP.R SPRINT


Cellulose particles with widths in the nanometer range are biomaterials with unique potentially useful features. Nowadays, a very great effort is being made to find new isolation and application methodologies of such nanomaterials derived from wood, cotton and agriculture wastes. Depending on the extraction process, micro and nanofibrillated cellulose (MFC, CNF) or nanocrystalline cellulose (CNC) can be obtained. These nanoparticles form gels at very low concentrations in water, having potential application as thickening agent for formulated chemical products. However, studies concerning the thickening effect of nanocellulose in complex fluids containing polymers, surfactants and inorganic particles at high ionic strength are still very scarce in the literature.The aim of this project is to establish a new research line at the Brazilian Nanotechnology Laboratory, intended to study the production and the application of nanocelluloses as rheology modifier for complex fluids. It is proposed to use sugarcane bagasse, the most abundant agro-industrial waste in Brazil, as feedstock in the production of these nanoparticles. All the prepared materials will be characterized by different techniques of transmission electron microscopy (TEM) and of atomic force microscopy (AFM), in addition to chemical characterization by infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). Rheological behavior of nanocellulose dispersions will be evaluated in different formulations. (AU)

Scientific publications (6)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
SILVA, CAROLINE E. P.; TAM, KAM C.; BERNARDES, JULIANA S.; LOH, WATSON. Double stabilization mechanism of O/W Pickering emulsions using cationic nanofibrillated cellulose. Journal of Colloid and Interface Science, v. 574, p. 207-216, AUG 15 2020. Web of Science Citations: 0.
PINTO, LIDIANE O.; BERNARDES, JULIANA S.; REZENDE, CAMILA A. Low-energy preparation of cellulose nanofibers from sugarcane bagasse by modulating the surface charge density. Carbohydrate Polymers, v. 218, p. 145-153, AUG 15 2019. Web of Science Citations: 1.
FERREIA, F. V.; TRINDADE, G. N.; LONA, L. M. F.; BERNARDES, J. S.; GOUVEIA, R. F. LDPE-based composites reinforced with surface modified cellulose fibres: 3D morphological and morphometrical analyses to understand the improved mechanical performance. EUROPEAN POLYMER JOURNAL, v. 117, p. 105-113, AUG 2019. Web of Science Citations: 1.
SOUZA, SIVONEY FERREIRA; MARIANO, MARCOS; DE FARIAS, MARCELO A.; BERNARDES, JULIANA SILVA. Effect of depletion forces on the morphological structure of carboxymethyl cellulose and micro/nano cellulose fiber suspensions. Journal of Colloid and Interface Science, v. 538, p. 228-236, MAR 7 2019. Web of Science Citations: 1.
MARIANO, MARCOS; HANTAO, LEANDRO WANG; BERNARDES, JULIANA DA SILVA; STRAUSS, MATHIAS. Microstructural characterization of nanocellulose foams prepared in the presence of cationic surfactants. Carbohydrate Polymers, v. 195, p. 153-162, SEP 1 2018. Web of Science Citations: 5.
MARIANO, MARCOS; BERNARDES, JULIANA DA SILVA; STRAUSS, MATHIAS. Mold heat conductance as drive force for tuning freeze-casted nanocellulose foams microarchitecture. Materials Letters, v. 225, p. 167-170, AUG 15 2018. Web of Science Citations: 4.

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