Results 61 to 70 of about 352,893 (131)

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

Africa's natural fibres used in polymer composites: A systematic review

Polymer Composites, Volume 45, Issue 11, Page 9677-9702, 10 August 2024.
Africa's natural fibres used in polymer composites. Abstract Environmental concerns and the depletion of petroleum resources have spurred research into natural fibres as sustainable alternatives to synthetic fibres as the reinforcement phase in polymer composites.
Chinyere O. Nwankwo, Jeffrey Mahachi, David O. Olukanni, Innocent Musonda   +3 more
wiley   +1 more source

Effect of UV‐water weathering on the mechanical properties of flax‐fiber‐reinforced polymer composites

Polymer Composites, Volume 45, Issue 5, Page 4266-4280, 10 April 2024.
The effect of UV‐Water weathering on the flax fiber reinforced polymer composites. Abstract This study examines the influence of weathering aging on the mechanical properties and durability of flax fiber‐reinforced polymer composites (FFRP) intended for outdoor applications.
Bowen Xu, Bart van den Hurk, Tao Liu, Rijk Blok, Patrick Teuffel   +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

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

Antistatic-reinforced biocomposites of polyamide-6 and polyaniline-coated curaua fibers prepared on a pilot plant scale

, 2015
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Curaua fibers were used with success as a reinforcing agent in polyamide-6, however, for several applications, an antistatic ...
Adamo, CB, Silva, MVCE, Araujo, JR, De Paoli, MA   +3 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

The effect of fiber morphology on the tensile strength of natural fibers [PDF]

, 2013
peer reviewedIn the present work the morphology of natural fibers was correlated with their mechanical properties via image analysis. Jute, sisal, curaua, coir and piassava fibers were tested under direct tension in a universal testing machine and the ...
Da Fonseca Martins Gomes, Otavio, Vitorino Castro Pereira, Thatiana, Dias Toledo Filho, Romildo, Alves Fidelis, Maria Ernestina, De Andrade Silva, Flavio   +4 more
core   +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