Plastics Technology
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. High shear dispersion of tracers in polyolefins for improving their detection
Abstract An efficient recycling of end-of-life products is of crucial interest from an economical and ecological point of view. However, the near infrared spectroscopy often used for the optic sorting processes is limited because of the absorption of carbon black present in black plastics and as it only sorts as a function of chemical formulas. The tracing t
Polímeros. Publicado em: 2015-10
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2. Oceanografia e Química: unindo conhecimentos em prol dos oceanos e da sociedade
The marine environment is certainly one of the most complex systems to study, not only because of the challenges posed by the nature of the waters, but especially due to the interactions of physical, chemical and biological processes that control the cycles of the elements. Together with analytical chemists, oceanographers have been making a great effort in
Quím. Nova. Publicado em: 2013
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3. Análise de patentes de tecnologias relacionadas a resíduos de equipamentos elétricos e eletrônicos / Analysis of patents for technologies related to waste electrical and electronic equipment
The problem of solid waste has been touted as one of the most serious to date. The increasing scarcity of land for the establishment of new landfills, combined with the existing limitations for the recovery of non-renewable materials, low degree of implementation of new treatment alternatives and recycling, now represent a major challenge. Therefore, conside
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2012
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4. Nanocomposites: synthesis, structure, properties and new application opportunities
Nanocomposites, a high performance material exhibit unusual property combinations and unique design possibilities. With an estimated annual growth rate of about 25% and fastest demand to be in engineering plastics and elastomers, their potential is so striking that they are useful in several areas ranging from packaging to biomedical applications. In this un
Materials Research. Publicado em: 2009-03
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5. Produção e caracterização de biomateriais a partir de fibras naturais ou amidos com poli (butileno adipato co-tereftalato) (PBAT)
Agropolímeros como amidos e fibras naturais são polímeros biodegradáveis de fonte renováveis que têm sido incorporados a matrizes poliméricas para melhorar a biodegradabilidade e reduzir custos. O objetivo desse trabalho foi produzir biomateriais baseados em amidos e fibras naturais com poli(butileno adipato co-tereftalato) por extrusão reativa. Biom
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/12/2007
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6. Influência de modificações interfaciais nas propriedades mecânicas de compósitos de polipropileno com farinha de madeira
Among numerous fibers of commercial interest used as fillers and reinforcement in thermoplastics, wood waste fibers (WWF), mostly known as wood flour, can replace mineral fillers such as talc, CaCO3 and fiberglass with great advantage. Wood-plastics composites (WPCs) technology includes concepts of compatibility and processing and yet presents technical chal
Publicado em: 2007
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7. Utilization of thermoplastic rubber in the pressure sensitive adhesive area / Utilização de elastomeros termoplasticos no segmento de adesivos sensiveis a pressão (PSA)
The SBC thermoplastic elastomers are styrene block copolymers and combine the advantages of Natural Rubber and Plastics. Not only have a high technology, but also allow a large variety of applications and due to the mentioned advantages, its market share has been growing and justifying strong investment to be developed, and adhesives can be highlighted as it
Publicado em: 2005
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8. Avaliação do teor e da composição quimica do oleo essencial de plantas medicinais submetidas a processos de secagem e armazenamento
In Brazil, the therapeutical use of medicinal plants is increasing each time. Some national and international companies use vegetal raw material in the elaboration of its products, so the commercial cultivation and the improvement of harvest of these species becomes indispensable. The objective of this work was to study post-harvest of two medicinal species
Publicado em: 2005
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9. Materials derived from biomass/biodegradable materials.
Interest in biodegradable plastics made from renewable resources has increased significantly in recent years. PHBV (polyhydroxybutyrate-polyhydroxyvalerate) copolymers are good examples of this type of materials. This paper provides an overview of the manufacturing process, properties, biodegradability, and application/commercial issues associated with PHBV