Results 61 to 70 of about 456 (180)

Caracteres anatômicos de fibras foliares de brotações de curauá propagadas in vitro = Anatomical characters of curauá foliar fibers from plantlets in vitro propagation

Acta Scientiarum: Biological Sciences, 2007
O curauá [Ananas erectifolius (L.B.Sm) - Bromeliaceae] é uma espécie com grande potencial de utilização na indústria automobilística, devido à sua resistência, maciez e peso reduzido.
Osmar Alves Lameira, Luiz Alberto Beijo, Daniel Melo de Castro, Helen Cristina de Arruda Rodrigues, Luciana Domiciano Silva Rosado, Flávia Dionísio Pereira, José Eduardo Brasil Pereira Pinto   +6 more
doaj  

Curaua/polypropylene composites: Phase compatibilization and alternative micromechanics modeling

Industrial Crops and Products
Curaua strands, a natural fiber scarcely explored for reinforcement applications, were investigated as the dispersed phase in polypropylene composites. Although maleic anhydride-grafted polypropylene (MAPP) is widely used as a compatibilizer in natural ...
Gabriela A. Bastida, Roberto J. Aguado, Marc Delgado-Aguilar, F. Xavier Espinach, Joan Ximinis, Faust Seculi   +5 more
doaj   +1 more source

Degradation mechanisms of curaua, hemp, and sisal fibers exposed to elevated temperatures [PDF]

BioResources, 2019
The influence of elevated temperatures on mechanical behavior was studied for curaua, hemp, and sisal natural fibers. Tensile tests were performed on fibers heated at 100 °C, 150 °C, and 200 °C for 24 h, and reference samples were maintained without thermal treatment for comparisons.
Felipe Pinheiro Teixeira, Otávio da Fonseca Martins Gomes, Flávio de Andrade Silva   +2 more
openaire   +1 more source

Valorization of coffee silverskin by cascade extraction of valuable biomolecules: preparation of eco‐friendly composites as the ultimate step

Biofuels, Bioproducts and Biorefining, Volume 18, Issue 2, Page 524-542, March/April 2024.
Abstract This study presents a multidisciplinary approach for dealing with the environmental problems related to agro‐industrial coffee residues. The exploitation of these residues allows biomolecules to be obtained from renewable sources and enables the preparation of CO2‐neutral biocomposites, with the advantages of reducing fossil depletion ...
Stefano Bianchi, Micaela Vannini, Laura Sisti, Paola Marchese, Norma Mallegni, Óscar Rodríguez, Stéphan Kohnen, Job Tchoumtchoua, Patrizia Cinelli, Annamaria Celli   +9 more
wiley   +1 more source

Abaca fiber as an efficient reinforcement for high mechanical performance in metakaolin‐based geopolymers

International Journal of Applied Ceramic Technology, Volume 21, Issue 2, Page 1154-1169, March/April 2024.
Abstract This study introduces an innovative method for efficiently integrating abaca fibers into a potassium‐based geopolymer (KGP) material. Geopolymers often suffer from brittleness, and composite designs have been explored as a solution to enhance their strength and ductility.
Ana Carolina Constâncio Trindade, Sai Shruti Sood, Deyvid do Carmo Silva, Ali Ozer, Waltraud M. Kriven   +4 more
wiley   +1 more source

Chemical Characterization of Lignin and Lipophilic Fractions from Leaf Fibers of Curaua (Ananas erectifolius) [PDF]

Journal of Agricultural and Food Chemistry, 2007
The chemical composition of leaf fibers of curaua (Ananas erectifolius), an herbaceous plant native of Amazonia, was studied. Special attention was paid to the content and composition of lignin and lipophilic compounds. The analysis of lignin in the curaua fibers was performed in situ by pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) and ...
Marques, Gisela, Gutiérrez Suárez, Ana, Río Andrade, José Carlos del   +2 more
openaire   +3 more sources

Biomicrofibrilar composites of high density polyethylene reinforced with curaua fibers: Mechanical, interfacial and morphological properties

, 2015
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Vegetal fibers are used in polymer composites to improve mechanical properties, substituting inorganic reinforcing agents ...
Spinace, MAS, Araujo, JR, Teixeira, GM, De Paoli, MA, Mano, B   +4 more
core   +1 more source

Efeito da forma de processamento e do tratamento da fibra de curauá nas propriedades de compósitos com poliamida-6 Effect of the processing method and curauá fiber treatment on the properties of polyamide-6 composites

Polímeros, 2009
O interesse pela utilização de fibras vegetais como reforço para polímeros tem aumentado recentemente devido às suas vantagens ambientais e tecnológicas.
Paulo A. Santos, Márcia A. S. Spinacé, Karen K. G. Fermoselli, Marco-A. De Paoli   +3 more
doaj   +1 more source

Estudo das propriedades mecânicas e elétricas de fibras de curauá modificada com polianilina Study on mechanical and electrical properties of curaua fibers modified with polianiline

Polímeros, 2010
Fibras naturais têm sido empregadas em diversos compósitos, principalmente na indústria automobilística. Dentre as diversas fibras naturais, a fibra de curauá é atraente por apresentar elevada propriedade mecânica associada a baixos valores de densidade.
Fernando G. de S. Junior, Paulo H. S. Picciani, Eli V. da Rocha, Geiza E. de Oliveira   +3 more
doaj  

Caracterização térmica e mecânica de compósitos de poliuretano com fibras de Curauá Thermal and mechanical caracterization of polyuretane composites with Curaua fibers

Polímeros, 2004
O presente trabalho tem por objetivo estudar o comportamento térmico e o mecanismo de decomposição térmica de compósitos de poliuretano nas proporções de: 5, 10 e 20%(p/p) de fibra de curauá.
Cheila G. Mothé, Carla R. de Araujo
doaj   +1 more source