Vinyl Acetate
Mostrando 1-12 de 80 artigos, teses e dissertações.
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1. Influence of Refinery Asphalt Residue Addition on Flow: A Study Using Waxy Model-System
One of the main phenomena causing problems in the oil industry is the precipitation of waxes, which can crystallize and form deposits, clogging lines and reducing flows. Many studies have been conducted seeking to overcome this problem, mainly through application of chemical to increase flow. Some studies have shown that the asphaltenes present in crude oil
Journal of the Brazilian Chemical Society. Publicado em: 2023
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2. Intra and intersession repeatability and reliability of dynamic parameters in pressure platform assessments on subjects with simulated leg length discrepancy. A cross-sectional research
ABSTRACT BACKGROUND: Leg length discrepancy (LLD) may play a key role in exercise biomechanics. Although the Podoprint platform has been used in dynamic pressure studies, there are no data regarding the reliability and repeatability of dynamic measurements under simulated LLD conditions. OBJECTIVES: To determine the intra and intersession repeatability and
Sao Paulo Med. J.. Publicado em: 2021-05
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3. Modelo sintético de baixo custo para treinamento do uso de torniquete
RESUMO Objetivo: apresentar um modelo de baixo custo para treinamento de controle de sangramento com o uso de torniquete e os resultados da avaliação do treinamento. Método: foram utilizados materiais de fácil aquisição e de baixo custo, como espuma de estofado, placa de etileno-acetato de vinila (EVA), bomba plástica de propulsão, recipiente de so
Rev. Col. Bras. Cir.. Publicado em: 20/01/2020
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4. Órteses de EVA no tratamento para pé torto congênito em recém-nascidos
Resumo Introdução: Pé torto congênito (PTC) é uma deformidade ortopédica caracterizada por uma displasia congênita das estruturas musculoesqueléticas como músculos, tendões, ligamentos, estruturas osteoarticulares e neurovasculares, de origem multifatorial e causa idiopática. Objetivo Oferecer intervenção precoce no tratamento de pé torto con
Cad. Bras. Ter. Ocup.. Publicado em: 11/11/2019
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5. Synthesis and Characterization of Fluorescent PVA/PVAc-Rodhamine Microspheres
Fluorescent polymeric microspheres are used in a wide range of biomedical and technological applications, including blood flow determination, screening, flow visualization, flow tracing, medical imaging, fluorescence microscopy and flow cytometry among others. Rhodamine 6G (R6G) is a lipophilic cationic dye, which is among the most stable organic fluorophore
Mat. Res.. Publicado em: 02/09/2019
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6. Mechanical and Microstructural Properties of Redispersible Polymer-Gypsum Composites
Studies on gypsum modified by polymers have been conducted to assess the potential of improvement in the mechanical performance, water resistance and increasing the setting time, facilitating its handling. Gypsum-based compounds made with different additions of redispersible polymers were studied, such as: ethylene-vinyl acetate (EVA), vinyl acetate terpolym
Mat. Res.. Publicado em: 25/04/2019
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7. Quantification of Aerospace Polymer Blends by Thermogravimetric Analysis and Infrared Spectrometry
ABSTRACT Ethylene-propylene-diene elastomer (EPDM) is employed as thermal insulation for rocket motors, as well as EPDM blends with ethylene vinyl acetate (EVA) have been used in the aerospace industry. The quantification of these blends is more common using Fourier Transform Infrared Spectrometry (FT-IR) by transmission mode, but without discussing sample p
J. Aerosp. Technol. Manag.. Publicado em: 07/01/2019
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8. Estudo da incorporação de resíduos da industria calçadista em misturas asfálticas
ABSTRACT The footwear industry discards residues in its most diverse phases of production, the Ethylene Vinyl Acetate (EVA) being one of them. This work proposes an evaluation of the use of EVA’s residue discarded by the footwear industry of Campina Grande city in asphalt mixtures. The modified asphalt binder was characterized by penetration test, softenin
Matéria (Rio J.). Publicado em: 18/10/2018
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9. Effect of natural ageing on the properties of recycled polypropylene/ethylene vinyl acetate/wood flour composites
ABSTRACT Wood flour composites main applications are represented by outdoor furnishing. Therefore, it is important to evaluate their behavior under natural ageing conditions. This work aims to investigate the natural ageing impact on the mechanical, physical, thermal e morphological properties of recycled polypropylene/ethylene vinyl acetate/wood flour compo
Matéria (Rio J.). Publicado em: 20/07/2017
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10. Simultaneous Determination of Furan and Vinyl Acetate in Vapor Phase of Mainstream Cigarette Smoke by GC-MS
ABSTRACT A simple and sensitive method for simultaneous determination of furan and vinyl acetate (VA) in vapor phase of mainstream cigarette smoke with cold trap and gas chromatography-mass spectrometry (GC-MS) was developed. A Cambridge filter pad (CFP) was placed in front of the impingers of smoking machine to remove the particle phase from cigarette smoke
An. Acad. Bras. Ciênc.. Publicado em: 04/05/2017
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11. Devulcanization of Natural Rubber in Composites with Distinct Crosslink Densities by Twin-Screw Extruder
In this study, the effects of the devulcanization process realized by an intermeshing co-rotating twin-screw extruder (ICTSE) on three vulcanized Natural Rubber (NR) composites with different crosslink densities (CD) have been investigated. The extrusion parameters were fixed, as well as the initial material granulometry and auxiliary thermoplastic added to
Mat. Res.. Publicado em: 02/05/2017
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12. Adsorption of BSA (Bovine Serum Albuminum) and lysozyme on poly(vinyl acetate) particles
Abstract Poly(vinyl acetate) (PVAc) particles find many uses in the biomedical field, including the use as particle embolizers. Particularly, embolizing particles can combine physical and chemical effects when they are doped with pharmaceuticals. For this reason, the adsorption of bovine serum albuminum (BSA) and lysozyme (used as model biomolecules) on PVAc
Polímeros. Publicado em: 08/12/2016