Thermal stability and degradation kinetic study of white and colored cotton fibers by thermogravimetric analysis

Autor(es)

Corradini, E. ^[1] ; Teixeira, E. M. ^[1] ; Paladin, P. D. ^[1] ; Agnelli, J. A. ^[2] ; Silva, O. R. R. F. ^[3] ; Mattoso, L. H. C. ^[1]

Afiliação do(s) autor(es)

^[1] Embrapa Instrumentacao Agropecuaria, BR-13560970 Sao Carlos, SP - Brazil

^[2] Univ Fed Sao Carlos, Dept Mat Engn, BR-13560905 Sao Carlos, SP - Brazil

^[3] Embrapa Algodao, BR-58107720 Campina Grande, PB - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY; v. 97, n. 2, p. 415-419, AUG 2009.
• Citações Web of Science: 39

Resumo

Thermal degradation behavior using thermogravimetry (TG), chemical composition and crystallinity by X-ray diffraction of white and naturally colored cotton fibers (ruby, beige, brown and green) were studied. Flynn-Wall-Ozawa method was used to investigate the thermal decomposition kinetics of the different fibers. The white cotton fiber has higher thermal stability and higher apparent activation energy (E (a)) value compared to the colored fibers. There are no significant differences in initial temperature of degradation in air or in nitrogen atmosphere for the same type of fiber. Chemical composition and crystallinity influenced the thermal degradation behavior of the fibers studied. (AU)

• Processo FAPESP: 07/50863-4 - Obtenção de nano-whiskers de celulose de algodão melhorado geneticamente para desenvolvimento de nanocompósitos biodegradáveis com poli(ácido lático)/(amido termoplástico)
• Beneficiário: Eliangela de Morais Teixeira
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado