| Texto completo | |
| Autor(es): |
Barbara Mano
[1]
;
Joyce R Araújo
[2]
;
Marco-A. De Paoli
[1]
;
Walter R. Waldman
[3]
;
Márcia A. Spinace
[5]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] Univ Estadual Campinas, Inst Quim, Campinas, SP - Brazil
[2] UNICAMP. Instituto de Química
[3] Univ Fed Sao Carlos, UFSCar, BR-13560 Sao Carlos, SP - Brazil
[4] Universidade Federal do ABC
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | POLIMEROS-CIENCIA E TECNOLOGIA; v. 23, n. 2, p. 161-168, 2013-04-05. |
| Resumo | |
Biocomposites of polymers with vegetal fibers have a broad spectrum of applications due to their high specific properties in comparison to their counterparts made with fiberglass. Polypropylene, PP, composites with curaua fiber compatibilized with different concentrations of maleic anhydride grafted polypropylene, PP-g-MA, were characterized according to their mechanical properties, morphologies and thermal stabilities in oxidative and inert atmospheres. The composites were prepared by single screw extrusion and injection molded specimens were used for testing. The composite with 20 wt % of curaua fiber with and without compatibilizer presented improved mechanical properties compared to pure PP. The use of PP-g-MA as a compatibilizer significantly increased fiber/matrix adhesion, however, the mechanical properties were only slightly improved in comparison with composites without compatibilizer. We observed an improvement in thermal stability of the composites, compared to that expected from the weighted average of the individual components, both under inert and oxidative atmospheres. Furthermore, the thermal stability improved under inert atmosphere as a function of the concentration of compatibilizer. In this situation, indeed, there was a different shift of the weight loss processes owing to the presence of the compatibilizer. (AU) | |
| Processo FAPESP: | 06/58343-7 - Compósitos de polipropileno com fibras de curauá obtidos por extrusão e moldados por injeção |
| Beneficiário: | Bárbara Íria Silva Mano |
| Modalidade de apoio: | Bolsas no Brasil - Mestrado |
| Processo FAPESP: | 10/17804-7 - Compósitos poliméricos |
| Beneficiário: | Maria Isabel Felisberti |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |