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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Biocomposites based on cellulose acetate and short curaua fibers: Effect of plasticizers and chemical treatments of the fibers

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Autor(es):
Gutierrez, Miguel Chavez [1] ; De Paoli, Marco-Aurelio [1] ; Felisberti, Maria Isabel [1]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Estadual Campinas, Inst Chem, BR-13083970 Campinas, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING; v. 43, n. 8, p. 1338-1346, AUG 2012.
Citações Web of Science: 23
Resumo

Biocomposites based on cellulose acetate and short curaua fibers were prepared by extrusion on a laboratory scale. The influence on the mechanical and thermal properties of the biocomposites caused by three different plasticizers, dioctyl phthalate (DOP), triethyl acetate (TEC) and glycerol triacetate (GTA), and the chemical treatment of the fibers was evaluated. The fibers were mercerized or extracted with acetone. The efficiency of the plasticizers was determined by their molecular features, however, for some applications DOP can be replaced by less hazardous plasticizers, such as TEC and GTA. The biocomposites presented morphology of fibrils uniformly dispersed in the polymer matrices and higher Young's modulus, higher thermal dimensional stability and lower thermal conductivity in comparison with the properties of the corresponding plasticized polymer matrices. Moreover, these biocomposites combine mechanical and dimensional properties of dense materials with thermal conductivities of porous and thermally insulating polymers. (C) 2012 Elsevier Ltd. All rights reserved. (AU)

Processo FAPESP: 10/17804-7 - Compósitos poliméricos
Beneficiário:Maria Isabel Felisberti
Modalidade de apoio: Auxílio à Pesquisa - Temático