Characterization of Cellulose Nanocrystals Grafted with Organic Acid Chloride of Different Sizes

Autor(es)

de Menezes, Aparecido Junior ^{[1, 2]} ; Longo, Elson ^[3] ; Leite, Fabio Lima ^[2] ; Dufresne, Alain ^[1]

Afiliação do(s) autor(es)

^[1] LGP2 Grenoble INP PAGORA, Lab Pulp & Paper Engn LGP2, F-38402 St Martin Dheres - France

^[2] Univ Fed Sao Carlos, Dept Phys Chem & Math DFQM, BR-18052780 Sorocaba - Brazil

^[3] Sao Paulo State Univ, Inst Chem IQ, Araraquara - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF RENEWABLE MATERIALS; v. 2, n. 4, p. 306-313, DEC 2014.
• Citações Web of Science: 5

Resumo

In the work presented in this article surface chemical modification was applied to ramie cellulose nanocrystals by grafting organic acid chlorides presenting different lengths of the aliphatic chain. The objective of this surface chemical treatment was to enhance the nonpolar nature of the grafted nanocrystals and improve their dispersibility in a nonpolar polymeric matrix. The occurrence of the chemical modification was evaluated by Fourier transform infrared (FTIR) spectroscopy, the degree of crystallinity by X-ray diffraction, and the morphology by scanning electron microscopy with field emission gun (FEG-SEM) and atomic force microscopy (AFM). The morphology and crystallinity provided by different experimental methods were carefully compared. (AU)

• Processo FAPESP: 07/05089-9 - Desenvolvimento de nanobiossensores usando a espectroscopia de força atômica: aplicação na detecção de pesticidas
• Beneficiário: Fabio de Lima Leite
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 14/02416-2 - International Conference on bio-based materials and composites (ICBMC'14)
• Beneficiário: Aparecido Junior de Menezes
• Modalidade de apoio: Auxílio à Pesquisa - Reunião - Exterior