Título:	Tensile behavior analysis combined with digital image correlation and mechanical and thermal properties of microfibrillated cellulose fiber/ polylactic acid composites
Autor(es):	Jesus, Luiz Carlos Correia de Oliveira, Janaíne Mônica de Leão, Rosineide Miranda Beltrami, Lílian R. Zattera, Ademir José Anflor, Carla Tatiana Mota Doca, Thiago de Carvalho Rodrigues Luz, Sandra Maria da
E-mail do autor:	mailto:luizquimica@gmail.com mailto:monica.janaine@gmail.com mailto:rosemirandaleao@gmail.com mailto:lvrossa@yahoo.com.br mailto:ademirjzattera@gmail.com mailto:anflor@unb.br mailto:doca@unb.br mailto:sandraluz@unb.br
Assunto:	Celulose microfibrilada Curauá Ácido polilático Compósitos poliméricos
Data de publicação:	8-Jun-2022
Editora:	Elsevier
Referência:	JESUS, Luiz C. C. et. al. Tensile behavior analysis combined with digital image correlation and mechanical and thermal properties of microfibrillated cellulose fiber/polylactic acid composites. Polymer Testing, v. 113, art. 107665, set. 2022. DOI 10.1016/j.polymertesting.2022.107665. Disponível em: https://www.sciencedirect.com/science/article/pii/S014294182200188X?via%3Dihub. Acesso em: 23 ago. 2022.
Abstract:	Microfibrillated cellulose (MFC) employed as reinforcement of polymeric matrices can increase elastic modulus, stiffness and strength of a composite. In this work, the assessment of the mechanical, thermal properties and tensile tests assisted by digital image correlation (DIC) was performed for curaua fiber MFC-reinforced polylactic acid (PLA) composites as a function of MCF content. First, MFC was incorporated into PLA using a solvent exchange technique and subsequent polymer solubilization to produce master batch composites. Then, more PLA was added to obtain composites with 0.5 and 1.5 wt% MFC by using double screw extrusion and injection molding. As a result, the addition of MFC caused the flexural, tensile, indentation, impact and modulus strengths to increase compared to those of pure PLA. The deformation gradient obtained from DIC verified that the 0.5 wt % MFC/PLA composite presented greater homogeneity in relation to load dispersion, corroborating the higher rigidity, maximum stress, and Poisson’s ratio.
Licença:	This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Fonte: https://www.sciencedirect.com/science/article/pii/S014294182200188X?via%3Dihub. Acesso em: 23 ago. 2022.
DOI:	https://doi.org/10.1016/j.polymertesting.2022.107665
Versão da editora:	https://www.sciencedirect.com/science/article/pii/S014294182200188X?via%3Dihub
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