Hybrid Polymer
Mostrando 1-12 de 68 artigos, teses e dissertações.
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1. Hybrid Hydrogels Based on Polyethylene Glycol Bioconjugated with Silylated-Amyloidogenic Peptides
Hybrid-peptide hydrogel arrangements are a promising alternative to obtaining biocompatible structures at the nanoscopic scale. In this work, a new class of hybrid hydrogels was obtained through the sol-gel process based on the reaction between an amyloid-like octapeptide sequence [RF]4 (where R = arginine and F = phenylalanine) covalently bonded with glycin
J. Braz. Chem. Soc.. Publicado em: 2020-11
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2. Synthesis and Characterization of Hybrid Polymer Based on Functionalized Silica as Efficient Adsorbent for Heavy Metal Ions from Aqueous Solution
An organic-inorganic hybrid material based on a silica matrix and functionalized with imidazole group was successfully synthesized by the sol-gel process. The characterization techniques enabled the confirmation of the proposed structure as well as the effectiveness of the imidazole ring functionality in the structure of the material. It is insoluble in wate
J. Braz. Chem. Soc.. Publicado em: 2020-10
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3. Polímero hidrorretentor e fertilização mineral na implantação de híbrido de Eucalyptus urophylla x Eucalyptus grandis
Resumo O uso de polímeros hidrorretentores surge como uma alternativa para disponibilizar água de forma adequada na fase de implantação de povoamentos florestais, além de reter nutrientes necessários para o estabelecimento e desenvolvimento destes. No presente trabalho, objetivou-se avaliar o efeito do polímero hidrorretentor e a influência de difere
Ciênc. Florest.. Publicado em: 02/12/2019
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4. Flexural behavior of hybrid GFRP - concrete railway sleepers
Resumo Este trabalho tem por objetivo apresentar o comportamento à flexão de vigas híbridas de GFRP (glass fiber reinforced polymer - polímero reforçado com fibra de vidro) e concreto para aplicação em dormentes ferroviários. Pretendeu-se obter dormentes com adequada resistência mecânica, não susceptíveis à corrosão, duráveis e mais leves que
Rev. IBRACON Estrut. Mater.. Publicado em: 23/09/2019
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5. Application of Zinc Oxide in Hybrid Solar Cells Using a P3HT and P3OT Polymer Junction as Charge Carrier
Hybrid solar cells show an increasing number in researches due to its low cost and easy of production. They are composed by and organic material and a semiconductor oxide. The aim of this paper was to synthesis and characterize zinc oxide by coprecipitation and apply it in a hybrid solar cell that uses a P3HT/P3OT copolymer as charge carrier. The cell was as
Mat. Res.. Publicado em: 01/07/2019
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6. Rheological characteristics PBAT/organoclay compounds
Abstract The rheological behavior of poly (butylene adipate-co-terephthalate) (PBAT) and its composites prepared with three different organoclays was investigated. Composites containing up to 7.5%, w/w organoclay, were prepared by two routes: (a) direct melt blending in an internal laboratory mixer with high intensity rotors and (b) concentrates (prepared in
REM, Int. Eng. J.. Publicado em: 2019-06
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7. COMPARATIVE STUDY OF TiO2 AND ZnO APPLICATION IN HYBRID SOLAR CELLS USING COPOLYMER P3OT/P3MT
Hybrid inorganic-organic solar cells are an attractive alternative energy source because of their low-cost production and ability to make use of a large amount of solar radiation available. This work aims to evaluate different solar cells composed of TiO2 and ZnO with P3OT/P3MT copolymer. Layers of semiconductor oxides were deposited on transparent fluorine-
Quím. Nova. Publicado em: 02/05/2019
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8. New Synthesis Method for a Core-Shell Composite Based on α-Bi2O3 @PPy and its Electrochemical Behavior as Supercapacitor Electrode
New composite based on polypyrrole (PPy) and bismuth oxide (α-Bi2O3) was investigated as supercapacitor electrode. The α-Bi2O3 was obtained by hydrothermal route at 500 ºC for 2 h. Cyclic voltammetry was used to electropolymerize PPy on graphite electrode (GE) or on GE/α-Bi2O3. The X-ray diffraction profile of Bi2O3 revealed the α-Bi2O3 monoclinic struc
J. Braz. Chem. Soc.. Publicado em: 2019-04
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9. Preparation and Characterization of Clay-polymer Nanocomposite Having Covalently-bound poly(norbornenes) with Pendant Cholesterols
We have successfully prepared a clay-based polymer nanocomposite having grown cholesterol bearing poly(norbornene) brushes end-tethered from a naturally-occurring montmorillonite clay template. The synthesis of this hybrid material involved the treatment of the clay with first generation Grubbs catalyst, a ruthenium alkylidene, which induced a ring-opening m
Mat. Res.. Publicado em: 10/01/2019
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10. Assessment of Percolation Threshold Simulation for Individual and Hybrid Nanocomposites of Carbon Nanotubes and Carbon Black
Modeling electrical conductivity of polymer composites with conductive fillers has great applicability to predict conductive materials behavior. In this study, the electrical behavior of simple and hybrid systems prepared from Carbon Black (CB) and Carbon Nanotubes (CNT) was studied. There have been few advances reported in the literature regarding the model
Mat. Res.. Publicado em: 18/09/2017
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11. Nano-Sized Silver Colloids Produced and Stabilized by Amino-Functionalized Polymers: Polymer Structure-Nanoparticle Features and Polymer Structure-Growth Kinetics Relationships
The synthesis of highly stable silver colloids has been successfully achieved by using reducing/stabilizer amino-functionalized polymers without the aid of any other external agent. The polymer coated inorganic nanoparticles have been detailed characterized via scattering, imaging and UV-Vis spectroscopy. The combination of transmission electron microscopy (
J. Braz. Chem. Soc.. Publicado em: 2017-09
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12. Tensile properties of novel carbon/glass hybrid thermoplastic composite rods under static and fatigue loading
ABSTRACT Novel carbon/glass hybrid thermoplastic composite rods have been developed consisting of a PAN-based carbon fiber, an E-glass fiber, and a thermoplastic matrix. Three types of hybrid rods with different carbon/glass ratios were then fabricated. The surface and cross-sectional morphologies of the hybrid rods were observed using a digital microscope.
Matéria (Rio J.). Publicado em: 20/07/2017