Polyethylene Terephthalate
Mostrando 1-12 de 78 artigos, teses e dissertações.
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1. Trace analysis of environmental endocrine disrupting contaminant bisphenol A in canned, glass and polyethylene terephthalate plastic carbonated beverages of diverse flavors and origin
Abstract Bisphenol A (BPA) is a hazardous contaminant demonstrating endocrine disrupting properties, and assumed to be involved in the pathogenesis of various cancer diseases for instance prostate, lung and breast cancer. The objective of the present study was to estimate the BPA amounts in carbonated beverages from the Saudi Arabian market for the first tim
Food Sci. Technol. Publicado em: 2021-03
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2. Effects of Temperature and Concentration on the Determination of PET Viscosity
This work describes the use of experiment planning to investigate the effects of the variables temperature and concentration of the polymer solution on the viscosity test of polyethylene terephthalate (PET). For this, the response surface methodology was based on a central composite rotatable design (CCRD) to optimize the combinations of the analytical condi
J. Braz. Chem. Soc.. Publicado em: 2020-09
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3. In situ DEPOSITION OF COPPER NANOPARTICLES ON POLYETHYLENE TEREPHTHALATE FILTERS AND ANTIBACTERIAL TESTING AGAINST Escherichia coli AND Salmonella enterica
Abstract This study reports a synthesis of copper nanoparticles (CuNP) deposited on polyethylene terephthalate (PET) filters and antibacterial evaluation of the obtained filters against Escherichia coli and Salmonella enterica. CuNP were synthesized by a two-step method involving adsorption of [Cu(OH)4]2- ions onto a PET filter and subsequent chemical reduct
Braz. J. Chem. Eng.. Publicado em: 13/01/2020
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4. Avaliação da energia incorporada e da emissão de CO2 em recipientes para refrigerantes: PET versus vidro
RESUMO Este artigo busca avaliar e comparar qual material (PET ou vidro) proporciona um ciclo de vida mais sustentável para os recipientes utilizados no envase de refrigerantes. Foram comparados quatro recipientes de vidro - três retornáveis e um descartável - com cinco recipientes em polietileno tereftalato (PET) - três descartáveis produzidos com mat
Eng. Sanit. Ambient.. Publicado em: 25/11/2019
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5. Spatial and temporal distribution of South American fruit fly in vineyards
ABSTRACT The South American fruit fly Anastrepha fraterculus (Wied., 1830) is one of the major insect pests of economic importance in vineyards of Southern Brazil. Understanding species behavior and knowing the moments when their population peaks occur can help producers and technicians to define management strategies. This work was carried out the spatial a
Rev. Ceres. Publicado em: 03/10/2019
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6. Camu-camu harvested with reddish-green peel preserves its physicochemical characteristics and antioxidant compounds during cold storage
Resumo Camu-camu (Myrciaria dubia), uma fruta nativa da Amazônia brasileira, é considerada uma fonte de compostos antioxidantes. Devido à sua elevada perecibilidade, são necessários estudos em pós-colheita para aumentar a sua vida útil. O objetivo deste estudo foi avaliar o ponto de colheita do camu-camu na conservação de suas características físi
Braz. J. Food Technol.. Publicado em: 04/07/2019
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7. Presence of iron in polymers extruded with corrosive contaminants or abrasive fillers
Abstract Off-site measurements of the dimensions of extruder screws are used to monitor their wear. This wear causes the presence of metals in the processed polymer. We detected the presence of iron in polymers processed with corrosive contaminants or abrasive fillers. To this end we processed poly(ethylene terephthalate), PET, pure or contaminated with poly
Polímeros. Publicado em: 10/06/2019
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8. Composites based on low-density polyethylene combined with PETcoated SBS paperboard shavings
ABSTRACT In this study, polymer composites comprised of shavings of SBS paperboard coated with polyethylene terephthalate (PET) and recycled low-density polyethylene (LDPE) were obtained. The tensile properties, flexural strength, impact resistance and water absorption were determined according to the standards published by the American Society for Testing a
Matéria (Rio J.). Publicado em: 06/12/2018
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9. PET glycolysis optimization using ionic liquid [Bmin]ZnCl3 as catalyst and kinetic evaluation
Abstract In the present work, the depolymerization of polyethylene terephthalate (PET) was performed by the method of glycolysis with ethylene glycol. The process was carried out using a factorial design in the Box-Behnken optimization model, using a response surface methodology (RSM) in which three factors (time, temperature and mass ratio of ethylene glyc
Polímeros. Publicado em: 29/11/2018
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10. Physical Properties of Sputtered Indium-doped ZnO Films Deposited on Flexible Transparent Substrates
Indium-doped zinc oxide (IZO) polycrystalline thin films were grown on polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and as reference on 7059 Corning glass substrates at room temperature by radio frequency magnetron sputtering from a target prepared with a mixture of ZnO and In2O3 powders. The structural, optical, and electrical propertie
Mat. Res.. Publicado em: 06/09/2018
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11. Influence of Moringa oleifera derivates in blends of PBAT/PLA with LDPE
Abstract There are few studies about Moringa oleifera derivates in polymer developments where vegetable oil was used as a plasticizer and a biodegrading agent. The polymerization of moringa oil (MO) was carried out assisted by microwaves without catalysts presence. There aren’t studies about the polymerization of MO using microwaves technology. Moringa’
Polímeros. Publicado em: 28/06/2018
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12. A Practical Fluorescence-Based Screening Protocol for Polyethylene Terephthalate Degrading Microorganisms
We propose a practical, low-cost and selective fluorescence-based protocol adapted to identify polyethylene terephthalate (PET) degrading microorganisms. The microbial hydrolysis of PET nanoparticles was monitored by 2-hydroxyterephthalate, a fluorophore produced in situ after radical hydroxylation of terephthalic acid (TPA), the final hydrolysis product, by
J. Braz. Chem. Soc.. Publicado em: 2018-06