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Functionalization, characterization and properties evaluation of cellulose nanocrystals and their bionanocomposites based on protein

Grant number: 18/00278-2
Support type:Scholarships abroad - Research Internship - Doctorate
Effective date (Start): May 01, 2018
Effective date (End): April 30, 2019
Field of knowledge:Engineering - Materials and Metallurgical Engineering
Principal Investigator:Luiz Henrique Capparelli Mattoso
Grantee:Liliane Samara Ferreira Leite
Supervisor abroad: Julien Bras
Home Institution: Embrapa Instrumentação Agropecuária. Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA). Ministério da Agricultura, Pecuária e Abastecimento (Brasil). São Carlos , SP, Brazil
Local de pesquisa : Université de Grenoble, France  
Associated to the scholarship:16/03080-3 - Preparation and characterization of bionanocomposites based on proteins and cellulose nanocrystals by continuous casting, BP.DR


The increasing environmental concern regarding the plastic pollution worldwide has stimulated the development of low-cost biodegradable materials. Proteins can be used as a polymer matrix for the production of edible and biodegradable packaging with differentiated physical, sensory and nutritional properties. However, using only proteins is not enough for producing films with satisfactory mechanical and barrier properties for food packaging usage. Moreover, functionalized cellulose nanocrystals (f-CNC) are efficient nanofillers that have been used to improve the properties of polymers. Therefore, this internship project proposes the esterification of the surface of cellulose nanocrystals, using nontoxic resin acids rosin, characterization and evaluation of f-CNC and their bionanocomposites based on protein, which will complement the current Ph.D. project (2016/03080-3). The main goals of this proposal are to investigate the effect of the f-CNC in protein matrices to produce films processed by casting, to study their thermal, mechanical, barrier and antimicrobial properties, as well as morphology and dispersion of f-CNC within the bionanocomposites. (AU)