Preparation and characterization of cellulose acetate/polysiloxane composites

Autor(es)

Brandao, Larissa Reis ^[1] ; Pagotto Yoshida, Inez Valeria ^[1] ; Felisberti, Maria Isabel ^[1] ; Goncalves, Maria do Carmo ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas UNICAMP, Inst Chem, BR-13083970 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Cellulose; v. 20, n. 6, p. 2791-2802, DEC 2013.
• Citações Web of Science: 7

Resumo

Composites of cellulose acetate and polysiloxane were prepared using 3-isocyanatepropyltriethoxysilane, as a coupling agent. The structure, the thermal and dynamic-mechanical behaviors, and the morphology of the obtained composites were investigated. The composites showed phase separation which was confirmed by the presence of siloxane micro- and nano-domains dispersed in the cellulose acetate matrix, with good interfacial adhesion between the phases. The results demonstrated that the incorporation of a polysiloxane phase on a cellulose acetate matrix caused a decrease in the glass transition temperature, storage modulus and hardness. The proposed methodology was seen to be convenient for the preparation of cellulose acetate/polysiloxane composites with useful properties. (AU)

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