Results 21 to 30 of about 493 (117)

Impregnação de filmes do compósito de policarbonato (PC) e sílica-gel (Si) com corante fotocrômico em fluido supercrítico - DOI: 10.4025/actascitechnol.v32i1.1999

Acta Scientiarum: Technology, 2009
O objetivo deste trabalho foi estudar a impregnação do corante fotocromático Reversacol Graphit® em filmes do compósito de policarbonato (PC) e sílica-gel (Si), com a finalidade de obter aplicações em lentes fotocrômicas.
Fernanda de Almeida Fin de Lima, Onélia Aparecida Andreo Santos, Nanci Pinheiro   +2 more
doaj   +1 more source

Influence of Hornification Treatment and Fiber Length on the Performance of Recycled Polypropylene Composites

Polymer Composites, Volume 47, Issue 5, Page 4793-4803, 10 March 2026.
Study of the influence of hornification treatment and jute and mallow fiber length on the physical, thermal, and mechanical properties of recycled polypropylene (PP) composites. ABSTRACT The growing accumulation of plastic waste has driven its reuse in the development of new composites, with natural fibers emerging as promising reinforcements. However,
Raquel de Sousa Freire, Gabrielle Machado dos Santos, João de Almeida Melo Filho, Holmer Savastano Junior, Virginia Mansanares Giacon   +4 more
wiley   +1 more source

Biocomposite of Cassava Starch Reinforced with Cellulose Pulp Fibers Modified with Deposition of Silica (SiO2) Nanoparticles

Journal of Nanomaterials, Volume 2015, Issue 1, 2015., 2015
Eucalyptus pulp cellulose fibers were modified by the sol‐gel process for SiO2 superficial deposition and used as reinforcement of thermoplastic starch (TPS). Cassava starch, glycerol, and water were added at the proportion of 60/26/14, respectively.
Joabel Raabe, Alessandra de Souza Fonseca, Lina Bufalino, Caue Ribeiro, Maria Alice Martins, José Manoel Marconcini, Lourival M. Mendes, Gustavo Henrique Denzin Tonoli, Chuan Wang   +8 more
wiley   +1 more source

Biocompatibility, osteointegration, osteoconduction, and biodegradation of a hydroxyapatite-polyhydroxybutyrate composite

Brazilian Archives of Biology and Technology, 2010
In this work, biocompatibility, osteointegration, osteoconductivity, and biodegradation of a hydroxyapatite polyhydroxybutyrate new composite were evaluated.
Emily Correna Carlo Reis, Andréa Pacheco Batista Borges, Cláudio César Fonseca, Mastoby Miguel Martinez Martinez, Renato Barros Eleotério, Gláucia Oliveira Morato, Paulo Miranda Oliveira   +6 more
doaj   +1 more source

Electrospun PA12 Nanofibers: Effect of Solution Parameters on Fiber Morphology

Macromolecular Symposia, Volume 414, Issue 6, December 2025.
ABSTRACT Carbon fiber‐reinforced polymers (CFRPs) are widely used in different industries due to their exceptional mechanical properties and low density. However, delamination and poor vibration damping capacity pose significant challenges to their application.
Rebecca Rosa, Emanuele Maccaferri, Tiziana Benelli, Tommaso Maria Brugo, Andrea Zucchelli, Loris Giorgini, Laura Mazzocchetti   +6 more
wiley   +1 more source

Vibrational Order, Structural Properties, and Optical Gap of ZnO Nanostructures Sintered through Thermal Decomposition

Journal of Nanomaterials, Volume 2014, Issue 1, 2014., 2014
The sintering of different ZnO nanostructures by the thermal decomposition of zinc acetate is reported. Morphological changes from nanorods to nanoparticles are exhibited with the increase of the decomposition temperature from 300 to 500°C. The material showed a loss in the crystalline order with the increase in the temperature, which is correlated to ...
Alejandra Londono-Calderon, Fernando F. Jurado-Lasso, Juan D. Romero-Salazar, Nathaly Jurado-Lasso, J. Fabian Jurado, Shadi A. Dayeh   +5 more
wiley   +1 more source

Análise de ensaios in vitro do compósito de 50% HA-50% TiO2 fabricados pelo método da esponja polimérica [PDF]

Cerâmica, 2014
À medida que há uma melhoria na tecnologia aplicada à saúde humana, a expectativa de vida vem aumentando, mas nem todas as partes do corpo podem manter suas funções com o processo de envelhecimento. A engenharia tecidual foi desenvolvida para substituir,
A. G. S. Galdino, E. M. Oliveira, F. B. Filippin-Monteiro, C. A. C. Zavaglia   +3 more
doaj   +3 more sources

Production of polyhydroxybutyrate and hydroxyapatite (PHB/HA) composites for use as biomaterial

Cerâmica
The composite materials using polyhydroxybutyrate as matrix and hydroxyapatite as reinforcement (PHB/HA) were produced by molding, using pressing at 100 MPa and 165 °C for 30 min. The amount of filler was varied from 0 to 20 wt% to evaluate the effect of
G. A. dos Santos, A. A. Barbosa, L. M. de Oliveira, A. V. Ferraz, N. C. Olivier, W. Acchar, A. C. S. Dantas   +6 more
doaj   +1 more source

Compósito de alumina e polietileno de baixa densidade, uma alternativa de aplicação em proteção balística

C&T, 2021
Este trabalho apresenta um compósito, formado por alumina e polietileno de baixa densidade, para utilização em proteções balísticas, principalmente coletes.
Márcio J Oliveira, Alaelson Vieira Gomes, André Rocha Pimenta   +2 more
doaj  

Compósitos à base de cimento reforçados com polpa celulósica de bambu. Parte I: Determinação do teor de reforço ótimo Cement-based composite reinforced with bamboo pulp. Part I: Determination of optimum reinforcement percentage

Revista Brasileira de Engenharia Agrícola e Ambiental, 2003
Este trabalho apresenta os resultados experimentais de um estudo em que se procurou desenvolver compósitos de matriz cimentícia reforçada com polpa de bambu. Foram usados dois tipos de polpa: refinada e sem refino.
Marcos A. S. dos Anjos, Khosrow Ghavami, Normando P. Barbosa   +2 more
doaj   +1 more source