Ldpe
Mostrando 1-12 de 82 artigos, teses e dissertações.
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1. Zn2Al Layered Double Hydroxides Intercalated with Nitrate and p-Aminobenzoate as Ultraviolet Protective Agents in Low-Density Polyethylene Nanocomposites and Natural Insulating Oils
Zn2Al-Cl and Zn2Al-NO3 layered double hydroxides (LDHs) were synthesized through the fixed pH co-precipitation method and used as precursor materials for the intercalation of p-aminobenzoate through anion exchange reactions. Since chloride in Zn2Al-Cl was only partially exchanged with p-aminobenzoate, the phases Zn2Al-NO3 and Zn2Al-N -AB (nitrate exchanged w
J. Braz. Chem. Soc.. Publicado em: 2020-05
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2. REUSE OF COLLAGEN AND HYDROXYAPATITE FROM THE WASTE PROCESSING OF FISH TO PRODUCE POLYETHYLENE COMPOSITES
In recent years, the increase in the generation of waste (e.g., bones and skin) from the processing of fish-based food related to the increase in fish consumption and the accumulation of synthetic polymers in the environment are causing major environmental concerns. Hydroxyapatite (HA) extracted from the bones and collagen from the skin of fish processing re
Quím. Nova. Publicado em: 2020-02
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3. Sustainable blends of LDPE/NR and sugarcane bagasse ashes with PE-g-MA thermomechanical relationships
RESUMO As blendas poliméricas obtidas com resíduos que antes eram chamados de lixos vêm crescendo como uma solução viável, permitindo melhorias nas propriedades mecânicas e como alternativas sustentáveis. Este trabalho relata os efeitos de misturas de polietileno de baixa densidade (PEBD) e borracha natural(NR), com cinzas de bagaço de cana-de-açú
Matéria (Rio J.). Publicado em: 16/09/2019
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4. Qualidade de lagostas armazenadas em diferentes condições de temperatura e embalagem
Resumo A lagosta é uma espécie marinha de grande importância em muitos países. As mudanças bioquímicas e microbiológicas que ocorrem após a captura determinam sua qualidade e vida útil. Objetivou-se, neste trabalho, estudar o efeito da temperatura de armazenamento sob congelamento (-30 ºC, -80 ºC e -150 ºC), do tipo de embalagem (polietileno de b
Braz. J. Food Technol.. Publicado em: 20/05/2019
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5. Rheological properties of low-density polyethylene filled with hydrophobic Co(Ni)-Al layered double hydroxides
Abstract Cobalt/aluminum and nickel/aluminum layered double hydroxide (LDH - M+2:Al molar ratio of 3:1) were intercalated with dodecylsulphate (DDS), laurate (LAU), stearate (STE) and palmitate (PAL) and used as filler in low-density polyethylene (LDPE) in percentages between 0.2 and 7.0wt%. After injection molding, the samples were submitted to morphologic
Polímeros. Publicado em: 01/04/2019
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6. Predicting LDPE/HDPE blend composition by CARS-PLS regression and confocal Raman spectroscopy
Abstract Industries and the scientific community currently focus on creating new ways to recycle and to reuse polymer waste that leads to serious socio-environmental risks. However, the quality of recycled polyethylenes depends strongly on their purity degree, but the distinction between Low Density Polyethylene (LDPE) and High Density Polyethylene (HDPE) b
Polímeros. Publicado em: 18/03/2019
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7. Enhancement of the antioxidant capacity and reduction of chilling injury in ‘Douradão’ peaches refrigerated under pre-storage and modified atmosphere
ABSTRACT. The present study aimed to investigate the effects of pre-storage for 24h and 48h and different modified atmosphere packaging-MAP treatments (using low-density polyethylene - LDPE) on the antioxidant compounds and the postharvest quality of ‘Douradão’ peaches under cold storage. The peaches were submitted to the following treatments: a control
Acta Sci., Agron.. Publicado em: 17/12/2018
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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. 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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10. Preoperative care of Polypoid exposed mucosal template in bladder exstrophy: the role of high-barrier plastic wraps in reducing inflammation and polyp size
ABSTRACT Objective To assess the role of high-barrier plastic wrap in reducing the number and size of polyps, as well as decreasing the inflammation and allergic reactions in exstro- phy cases, and to compare the results with the application of low-barrier wrap. Materials and Methods Eight patients with bladder exstrophy-epispadias complex (BEEC) that had
Int. braz j urol.. Publicado em: 2018-06
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11. INFLUÊNCIA DA ADIÇÃO DE CASCA DE COCO NAS PROPRIEDADES FÍSICO-MECÂNICAS DE COMPÓSITOS POLÍMERO/MADEIRA
RESUMO Neste estudo, foram produzidos compósitos com três tipos de matriz termoplástica e material celulósico em uma proporção de 40%. As três matrizes termoplásticas foram polietileno de alta densidade (HDPE), polipropileno (PP) e polietileno de baixa densidade (LDPE), e os materiais celulósicos foram farinha de madeira pura (Pinus taeda L) ou uma
Rev. Árvore. Publicado em: 19/04/2018
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12. New Alternative to Produce Colored Polymer Nanocomposites: Organophilic Ni/Al and Co/Al Layered Double Hydroxide as Fillers into Low-Density Polyethylene
Green (Ni2+/Al+3) and pink (Co2+/Al+3) layered double hydroxides (LDH) (molar ratio of 3:1) were intercalated with several organic anions and used as functional colored fillers into low density polyethylene (LDPE) by melt mixing in amounts of 0.2 to 7 wt.%. Scanning electron microscopic (SEM) results of LDPE nanocomposites indicated that with low percentage
J. Braz. Chem. Soc.. Publicado em: 2017-12