BAMBOO CELLULOSIC PULP PRODUCED BY THE ETHANOL/WATER PROCESS FOR REINFORCEMENT APPLICATIONS

Autor(es)

Correia, Viviane da Costa ^[1] ; da Silva Curvelo, Antonio Aprigio ^[2] ; Marabezi, Karen ^[2] ; Feuzicana de Souza Almeida, Alessandra Etuko ^[3] ; Savastano Junior, Holmer ^[4]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Fac Zootecnia & Engn Alimentos, Engn Agr, BR-13635900 Pirassununga, SP - Brazil

^[2] Univ Sao Paulo, Inst Quim Sao Carlos, Quim, BR-13560970 Sao Carlos, SP - Brazil

^[3] Centro Univ Araraquara, Ctr Univ Araraquara, Engn Civil, BR-1480134 Araraquara, SP - Brazil

^[4] Univ Sao Paulo, Fac Zootecnia & Engn Alimentos, Engn Civil, BR-13635900 Pirassununga, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CIENCIA FLORESTAL; v. 25, n. 1, p. 127-135, JAN-MAR 2015.
• Citações Web of Science: 3

Resumo

Organosolv pulping is the clean chemical process of using organic solvents to aid in the removal of lignin and hemicellulose from lignocellulosic raw materials. This method provides facility for solvent recovery at the end of the process. In this work, it was to produce bamboo cellulosic pulp by the organosolv process evaluating different temperatures and reaction times, and the pulps were analyzed aiming their future application in the reinforcement of composites. The production of bamboo pulp by the organosolv process was studied varying the cooking conditions at 1, 2 and 3 h and 150, 170 and 190 degrees C of temperature, in order to achieve the ideal conditions of yield, chemical and morphological characteristics of the pulp for its potential application in the reinforcement of composites. The best results for delignification (kappa number of 38), with relatively lower fiber degradation (viscosity of 625 cm(3) g(-1)), aspect ratio of 40.4 and the index zero-span of 204 Nm g(-1), were achieved for the pulping process at 190 degrees C for 2 h. These pulping conditions can be considered as the more appropriate in the range of time intervals evaluated in this work. The higher mechanical strength and the lower incidence of morphological defects in the fiber (6.0% of curls and 10.6% of kinks) can demonstrate the potential of organosolv bamboo pulp as a reinforcing element. (AU)

• Processo FAPESP: 11/01128-5 - Produção de whiskers a partir de polpa organossolve de bambu e utilização como nanoreforço de compósitos cimentícios.
• Beneficiário: Viviane da Costa Correia
• Modalidade de apoio: Bolsas no Brasil - Doutorado