Journal
CELLULOSE
Volume 20, Issue 6, Pages 2791-2802Publisher
SPRINGER
DOI: 10.1007/s10570-013-0039-8
Keywords
Cellulose acetate; Composites; Coupling agent; Polysiloxane
Funding
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo FAPESP [proc.2010/17804-7]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
- National Institute of Science, Technology and Innovation in Complex Functional Materials (Inomat/ INCT)
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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.
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