Magnetic Suspension
Mostrando 1-12 de 55 artigos, teses e dissertações.
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1. DEVELOPMENT OF INEXPENSIVE CELLULOSE-BASED SORBENTS FOR CARBON DIOXIDE
ABSTRACT Aqueous amine solutions are benchmark solvents for CO2 capture and their operational drawbacks are well-known. In order to overcome these problems, the support of amines on solid materials appears as an option for CO2 capture. Cellulose is a versatile and low-cost material that can be used as a support. This study reports chemical modification of ce
Braz. J. Chem. Eng.. Publicado em: 15/07/2019
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2. Factorial design to obtain magnetized poly(ethyl acrylate-co-divinylbenzene)
Abstract Magnetized polymers are produced by incorporating magnetic particles in a polymeric matrix. This article describes the use of the suspension polymerization technique using ethyl acrylate and divinylbenzene as monomers, in the presence of heptane and/or toluene as diluent, initiated by free radicals. To produce the polymer, we first performed fractio
Polímeros. Publicado em: 04/07/2019
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3. ZEÓLITA 4A PARA PURIFICAÇÃO DO GÁS DE ATERRO SANITÁRIO
The anaerobic decomposition in landfills produces a gas mixture known as landfill biogas. This biogas consists mainly of CH4 and CO2. The CO2 removal can be carried out by means of adsorption. In order to promote CO2 removal, zeolite type 4A was used as solid adsorbent. The synthesized zeolite was characterized by scanning electron microscopy and X-ray diffr
Quím. Nova. Publicado em: 2018-01
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4. Preparation and Properties of Epoxy Resin-Coated Micro-Sized Ferrosilicon Powder
Ferrosilicon powder surface coated with a dense epoxy resin membrane was prepared via coating precipitation methods using silane coupling agents as the modifier and epoxy resin as the coating agent. FTIR, FESEM, MPMS-XL, and TG-DSC were used to analyze the morphology, surface composition, magnetic property and thermostability of ferrosilicon powder before an
Mat. Res.. Publicado em: 07/07/2016
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5. High density polyethylene and zirconium phosphate nanocomposites
Abstract Nanocomposite based on high density polyethylene (HDPE) and layered zirconium phosphate organically modified with octadecylamine (ZrPOct) was obtained through melt processing. The ZrPOct was synthesized by precipitation and modified by suspension and sonication procedures. The initial and maximum degradation temperatures (Tonset and Tmax) were incre
Polímeros. Publicado em: 2015-10
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6. Synthesis and characterization of Fe3O4 nanoparticles with perspectives in biomedical applications
Nowadays the use of magnetic nanoparticles (MNP) in medical applications has exceeded expectations. In molecular imaging, MNP based on iron oxide coated with appropriated materials have several applications in vitro and in vivo studies. For applications in nanobiotechnology these MNP must present some characteristics such as size smaller than 100 nanometers,
Mat. Res.. Publicado em: 29/04/2014
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7. Influencia del campo magnético estático en la turbidez de la cerveza de alta gravedad
Static magnetic field was applied to high gravity beer in three different stages of the process, from a multivariate D-optimal design for three factors (current, residence time and type of beer). The response variable turbidity, was determined by difference of absorbance at 580 nm. Linear model was obtained in the ranges tested relating the absorbance to the
Braz. J. Food Technol.. Publicado em: 2013-12
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8. Removal of Phenol from aqueous solutions by Polymeric composites containing Ni and Co particles
Magnetic composites have a wide range of potential technological applications; however the evaluation of this material for extraction of phenolic compounds has not been sufficiently studied. Due to its high toxicity and solubility the removal of phenolic compounds from the aquatic environments has critical importance. In this work polymeric composites were p
Polímeros. Publicado em: 25/10/2013
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9. Preparação e caracterização de microesferas poliméricas à base de metacrilato de glicidila e divinilbenzeno com propriedades magnéticas / Preparation and characterization of polymeric microspheres based on glycidyl methacrylate and divinylbenzene with magnetic properties
Nesta Dissertação, foram sintetizadas microesferas poliméricas com propriedades magnéticas à base de metacrilato de glicidila e divinilbenzeno pela técnica de polimerização em suspensão. O material utilizado para conferir as propriedades magnéticas ao copolímero foi magnetita sintetizada no laboratório. Foram estudados os efeitos da modificação
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/03/2011
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10. Preparação de microesferas poliméricas à base de estireno, acetato de vinila e divinilbenzeno com propriedades magnéticas / Preparation of polymeric microsphereson styrene, vinyl acetate and divinybenzene with magnetic properties
Microesferas poliméricas magnéticas à base de estireno (STY), divinilbenzeno (DVB), acetato de vinila (VAc) e ferro foram preparadas via polimerização em suspensão e semissuspensão. Foram estudadas as influências da concentração de VAc adicionado na polimerização e a presença de ferro sobre as características das partículas poliméricas obtida
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/03/2011
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11. Estudos em adsorÃÃo de gÃs natural: armazenamento, transporte e purificaÃÃo / Studies of Natural Gas Adsorption: Storage, Transport and Purification
The use of vessels filled with activated carbon to store and transport natural gas (NG) at moderate pressures (about 3.5 MPa) and ambient temperature (about 298 K) has been studied as a potential alternative to compressed natural gas storage at high pressures (ca. 20 MPa). The present study provides an experimental investigation of charge and discharge cycle
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/02/2011
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12. A study of the initiator concentration’s effect on styrene-divinylbenzene polymerization with iron particles
This paper describes the preparation of magnetic copolymer obtained from suspension polymerization of styrene (Sty) and divinylbenzene (DVB) in the presence of iron particles treated and not treated with oleic acid. The magnetic copolymers were characterized according to their morphology, particle size distribution and magnetic properties. The results show t
Polímeros. Publicado em: 13/12/2011