Data/hora: 14/06/2024 11:59:13

Biblioteca(s): | Embrapa Instrumentação.
Data corrente: | 29/04/2022
Data da última atualização: | 29/04/2022
Autoria: | SENA NETO, A. R.; CLARO, P. I. C.; SOUZA, F. V. D.; MATTOSO, L. H. C.; MARCONCINI, J. M.
Afiliação: | ALFREDO R. SENA NETO, LNNA; PEDRO I.C. CLARO; FERNANDA VIDIGAL DUARTE SOUZA, CNPMF; LUIZ HENRIQUE CAPPARELLI MATTOSO, CNPDIA; JOSE MANOEL MARCONCINI, CNPDIA.
Título: | Poly(lactic acid) composites reinforced with leaf fibers from ornamental variety of hybrid pineapple (Potyra).
Ano de publicação: | 2018
Fonte/Imprenta: | Polymer Composites, v. 39, n. 11, 2018.
Páginas: | 4050-4057
DOI: | 10.1002/pc.24464
Idioma: | Inglês
Conteúdo: | While there have been many studies of fibers extracted from pineapple leaves as reinforcement in polymer composites, to date, only commercial varieties have been examined. This work aims to investigate the fibers from the leaves of a hybrid pineapple called Potyra as a mechanical reinforcement in a poly(lactic acid) (PLA) matrix. The fibers were pre-treated in a NaOH solution (1 wt%) and were incorporated into the PLA by a torque rheometer mixer followed by twin-screw extrusion. Samples of each composition were injected. The molded composites showed increases of tensile strength from 58.8 to 69.6 MPa, of Young?s modulus from 1.9 to 3.5 GPa, and of impact resistance from 28 to 44 J/m, and showed an increase of 58C in the heat deflection temperature (Abstract Figure). The measured tensile strength and Young?s modulus values are lower than the theoretical values obtained by micromechanics theory due to the pull-out of the matrix fiber and due to the orientation of the fibers in the composites. It was concluded that the pineapple hybrid fibers have potential for use as mechanical reinforcement in green composites. POLYM. COMPOS., 00:000?000, 2017. VC 2017 Society of Plastics Engineers
Thesagro: | Abacaxi.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1142507/1/P-Polylatic-acid-composites-reinforced....pdf
Registro original: | Embrapa Instrumentação (CNPDIA)
Exemplares: | CNPDIA - (17994-1) - UPC - AP - DD - PROCI.18-/0217 -  - 2018-0262 - DIS