Polyamide
Mostrando 37-48 de 168 artigos, teses e dissertações.
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37. Quality changes during frozen storage of blue shrimp (Litopenaeus stylirostris) with antioxidant, α-tocopherol, under different conditions
Fresh blue shrimp (Litopenaeus stylirostris) muscle was stored with antioxidants under different conditions: ANTIOX 2%, packed in bilayer film of polyamide-low density polyethylene film (PA-LDPE) with 2% α-tocopherol; ANTIOX 4%, packed in PA-LDPE film with 4% α-tocopherol; and ANTIOX-GLAZED, samples stored glazed with 2% α-tocopherol. Shrimps packed in PA
Food Sci. Technol. Publicado em: 2015-04
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38. Post-consumer polyethylene terephthalate and polyamide 66 blends and corresponding short glass fiber reinforced composites
Blends of bottle-grade post-consumer polyethylene terephthalate (PET) and virgin polyamide 66 (PA66), over the complete composition range, and corresponding short glass fiber (SGF) reinforced composites were investigated. These materials were compounded in a twin-screw extruder and injection molded as standard specimens. Morphological investigation of the co
Mat. Res.. Publicado em: 16/09/2014
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39. Improving the mechanical properties of polyamide 6-nanosilica nanocomposites by combining masterbatch technique with in situ polymerization
Um masterbatch (MA) reativo de poliamida 6 (PA6)/SiO2 contendo 20% (fração de massa) de nano-SiO2 foi preparado. Posteriormente, o MA reativo preparado foi usado como carga no preparo de nanocompósitos PA6/SiO2 (RA). A estrutura do RA foi analisada por espectrometria no infravermelho por transformada de Fourier (FTIR), microscopia eletrônica de transmiss
J. Braz. Chem. Soc.. Publicado em: 2014-07
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40. Crossflow microfiltration of sugarcane juice: effects of processing conditions and juice quality
Sugarcane juice with passion fruit pulp was clarified using microfiltration under different T (temperature), P (pressure), and V (tangential velocity). The effects of these processing parameters were evaluated applying a rotational central composite experimental design (RCCD) and response surface methodology (RSM). The tests were performed at a filtration pi
Food Sci. Technol. Publicado em: 2014-03
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41. Synthesis and characterization of novel polyamide-ethers based on bis-imidazole containing bulky aryl pendant groups
A series of novel polyamide-ethers (PAEs) based on bis-imidazole containing bulky aryl pendant groups was prepared by direct polycondensation of a diamine, 4-(1-(4-(4-(2-(4-aminophenyl)-4,5-diphenyl-1H-imidazol-1-yl)phenoxy)phenyl)-4,5-diphenyl-1H-imidazol-2-yl)benzenamine (DABI), and various dicarboxylic acids. All the resulting polyamide-ethers were amorph
Polímeros. Publicado em: 27/08/2013
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42. Development of Polyamide 6/Compound by Recycled Rubber Blends Using Graphitized Polyethylene or Polypropylene with Maleic Anhydride as Compatibilizer Agent
ABSTRACT: The toughening of polyamide 6 is desirable for many applications and may be obtained by adding a phase to the elastomeric matrix. However, this leads to a loss in its rigidity characteristics. Therefore, this study aimed at developing blends of polyamide 6/compound by recycled rubber (SBR-R), with the addition of compatibilizer graphitized polyethy
J. Aerosp. Technol. Manag.. Publicado em: 2013-06
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43. Preparative separation of polyphenols from artichoke by polyamide column chromatography and high-speed counter-current chromatography
An efficient method for the rapid separation and purification of polyphenols from artichoke by polyamide column chromatography in combination with high-speed counter-current chromatography (HSCCC) was successfully built. The crude ethanol extracts from dry artichoke were first pre-separated by polyamide column chromatography and divided in two parts as sampl
Quím. Nova. Publicado em: 2013
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44. Stability of a nanofiltration membrane after contact with a low-level liquid radioactive waste
This study investigated the treatment of a liquid radioactive waste containing uranium (235U + 238U) using nanofiltration membranes. The membranes were immersed in the waste for 24-5000 h, and their transport properties were evaluated before and after the immersion. Surface of the membranes changed after immersion in the waste. The SW5000 h specimen lost its
Quím. Nova. Publicado em: 2013
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45. Influência da geometria da nanocarga na estruturação, orientação e propriedades de filmes tubulares de nanocompósitos de PA6 / Influence of the nanoparticles shape on the structure, orientation and properties of pa6 nanocomposites blown films
The structure and morphology of polymers and consequently their properties are dependent on the processing conditions. During the blown film process, high shear and elongational flows can induce a preferred orientation of the polymer chains; controlling the process conditions, it is possible to obtain films with anisotropic properties. Polymeric nanocomposit
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/06/2012
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46. Qualidade e vida de prateleira de patê elaborado com subprodutos comestíveis do abate de ovinos. / Quality and shelf life of pâté made with edible by-products from slaughtered lamb.
Many edible meat by-products, produced from the lamb slaughter, are often wasted, although they represent excellent sources of many nutrients. The preparation of pâté may be an alternative to the use of this raw material, and contribute to the development of lamb sector by the offer of new products to the consumer market. The objective of this work was to
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/04/2012
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47. PRODUCTION AND CHARACTERIZATION OF NYLON 11 NANOCOMPOSITES REINFORCED WITH TIO2 BASED NANOMATERIALS / PRODUÇÃO E CARACTERIZAÇÃO DE NANOCOMPÓSITOS DE NYLON 11 REFORÇADOS POR NANOCARGAS A BASE DE TIO2
The fast technological developments comes with the need to obtain more materials combined with better performance. Polimeric materials, commonly used in our daily because of its characteristics of good strength, good chemical stability, easy processability and low cost, are still restricted for some applications owing to their low mechanical and thermal prop
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/04/2012
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48. Desenvolvimento de nanocompósitos de nylon 6 em um reator de bancada em batelada : polimerização in situ em unidade experimental / Development of nylon 6 nanocomposites in a batch reactor : in situ polymerization in experimental unit
Este projeto envolve o estudo e desenvolvimento de materiais compósitos (polímero/carga) nanoestruturados (nanocompósitos), produzidos em uma unidade experimental de polimerização, destinada ao desenvolvimento de Nylon -6 (Poliamida-6 ou PA-6) para novas aplicações como plástico de engenharia. O estudo envolve o processo de polimerização de PA-6 e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/03/2012