Characterization of Fibers from Pineapple's Crown, Rice Husks and Cotton Textile Residues

Author(s)

do Prado, Karen de Souza ; da Silva Spinace, Marcia Aparecida

• Document type: Journal article
• Source: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 18, n. 3, p. 8-pg., 2015-05-01.

Abstract

Fibers from pineapple's crown (PCF), rice husks (RH) and cotton textile residues (RTF) were characterized by SEM, X-ray diffraction, FTIR and thermogravimetric analysis. Moisture content, water absorption, density and the distribution of the diameter of the fibers were also evaluated. RTF showed cylindrical microstructure with smooth surface, PCF showed cellular structure and the microstructure of RH is globular, showing cell pattern of the outer surface epidermis which is well organized and has a corrugate structure. PCF and RH showed crystallographic planes of cellulose I and RTF showed a mixture of cellulose I and cellulose II. RTF showed the highest degree of crystallinity and the lower moisture content and water absorption. These results occur because the RTF has no hemicellulose, as verified by FTIR. Comparing the three fibers, the RTF presented the lowest density and diameter. Furthermore, the onset degradation temperature of RTF was 40 degrees C higher than the PCF and the RH. (AU)

• FAPESP's process: 10/17804-7 - Polymeric composites
• Grantee: Maria Isabel Felisberti
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 11/00156-5 - Coupling agent effect on the environment properties of polymeric composites with lignocellulosic fibers
• Grantee: Márcia Aparecida da Silva Spinacé
• Support Opportunities: Regular Research Grants