Biodegradable Plastic
Mostrando 13-24 de 30 artigos, teses e dissertações.
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13. Biocompósitos poliméricos de poli(butileno adipato-co-tereftalato) : PBAT e fibra natural de Munguba, nativa da Amazônia (Pseudobombax munguba) / Polymeric biocomposites of poly(butylene adipate-co-terephthalate) : PBAT and Munguba (Pseudobombax munguba), a natural fiber native from Amazônia
In this work it was studied polymer biocomposites made from a biodegradable polyester and natural fiber Munguba (Pseudobombax Munguba) native to the Amazon region, found in great abundance marshy areas of the forest, for which there are no literature reports of its use in polymer biocomposites. The effects of fiber size, concentration and chemical treatment
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/07/2012
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14. Produção e caracterização de filmes biodegradáveis de amido de mandioca e goma xantana
Biodegradable plastics from renewable, especially agricultural sources, have been the aim of constant scientific interest in recent years. Cassava starch is an abundant, renewable and low cost natural polymer considered a promising substitute for oil-based plastic packaging materials. However, starch-based plastic films tend to show low resistance to moistur
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/03/2010
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15. Diverse uses of feathers with emphasis on diagnosis of avian viral infections and vaccine virus monitoring
The large amounts of feathers produced by the poultry industry, that is considered as a waste was explored for possible uses in various industries, such as meals for animals, biofuels, biodegradable plastic materials, combating water pollution and more. That review mentions these uses, but concentrate on the utilization of feathers for the diagnosis of viral
Revista Brasileira de Ciência Avícola. Publicado em: 2009-09
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16. Thermal, mechanical and morphological properties of poly (hydroxybutyrate) and polypropylene blends after processing
The ever increasing accumulation of plastic waste in the environment has motivated research on polymers that degrade rapidly after being discarded as possible substitutes for conventional inert plastics. Biodegradable polymers can be an alternative, since they have non-toxic residual products and low environmental permanence. Poly (hydroxybutyrate) is a biod
Materials Research. Publicado em: 2009-06
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17. Cloning and heterologous expression of genes responsible for synthesis of polyhydroxybutyrato em Bradyrhizobium elkanii / Clonagem e expressão heterologa dos genes responsaveis pela sintese de polihidroxibutirato em Bradyrhizobium elkanii
Polyhydroxyalkanoates (PHAs) are polymers of hydroxyalkanoate acids, produced and accumulated intracellularly as a source of carbon and energy storage material, in prokaryotic cells. Often, the PHAs accumulation occurs in conditions when the carbon source is in excess but one or several other nutrients are limited, and may represent up to 80% of the cell dry
Publicado em: 2009
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18. Chemical and physical characterization of cassava flour and soy protein biofilms. / Caracterização físico-química de filmes biodegradáveis de farinha de mandioca e proteína de soja.
Environmental concerns associated with plastics disposal have promoted research into alternatives to replace the common plastic. Following this tendency, this research used cassava flour mixed with different rates of soybean protein and glycerol to produce biodegradable films by thermoplastic extrusion. Variables analyzed were: soybean protein, moisture and
Publicado em: 2009
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19. Is propionate alfa-oxidation involved in the reduction of biodegradable plastic production in Burkholderia sacchari? / Alfa-oxidação de propionato está envolvida na redução da produção de plástico biodegradável em Burkholderia sacchari?
Burkholderia sacchari is a new bacterial species from brazilian soil, able to grow in sucrose, accumulating intracellular granules of polyester belonging to the polyhydroxyalkanoate family (PHA). When cultivated on sucrose, the homopolymer poly-3-hydroxybutyrate is accumulated by this bacterium, which is used as biodegradable and biocompatible plastic. When
Publicado em: 2008
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20. Study of poli (e-caprolactone), poli (e-caprolactone)/starch blend and poli (e-caprolactone)/starch/coconut fiber biodegradated by fungi and bacteria / Estudo da biodegradação dos filmes de poli (e-caprolactona), da blenda poli (e-caprolactona)/amido e do composito poli (e-caprolactona)/amido/po de fibra de coco por fungos e bacterias
Hugh amount of plastic waste is discarded in the environment causing a growing imbalance. This situation leads to the development of new resistant and functional plastic materials to last during their useful life and biodegrade after it, in a short period of time. In order to minimize the quantity of polymers discarded in the environment, within a perspectiv
Publicado em: 2008
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21. Processing and characterization of biocomposites of PHB with acetylated and no-acetylate natural fibres of coconut and sisal / Processamento e caracterização de biocompositos de PHB com fibras naturais de coco e sisal acetiladas e não-acetiladas
The problem of urban waste accumulation has increased in recent decades and the large consumption of plastics is one of those responsible for this situation. These materiaIs have the ability to remain in the environment for many years making it difficult further to provide its correct destination. This problem was the main motivation of the work presented he
Publicado em: 2008
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22. Desenvolvimento e avaliação de filme biodegradável de polietileno incorporado de amido de grão-de-bico (Cicer arietinum L.) / Development and evaluation of biodegradable film of polyethylene incorporated with chickpea starch (Cicer arietinum L.)
The concern with the pollution caused by the great volume of waste plastics in the environment has led to the study of new biodegradable materials. The starch is one of natural polymers with greater potential of application in the development of biodegradable packaging, which is renewable and can be obtained from much variety of crops at low cost. Chickpea i
Publicado em: 2007
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23. Polímeros biodegradáveis - uma solução parcial para diminuir a quantidade dos resíduos plásticos
The large use of plastics has generated a waste deposit problem. Today plastic wastes represent 20% in volume of the total waste in the municipal landfills. To solve the disposal problem of plastics methods have been employed such as incineration, recycling, landfill disposal, biodegradation and the use of biodegradable polymers. Incineration of plastic wast
Química Nova. Publicado em: 2006-07
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24. Estudo da biodegradação da blenda de poli (e-caprolactona) e amido modificado em meios solido e liquido
Increasing environmental concens and the waste management policies in the last decade have prompted the use of natural-based biodegradable materials instead od nonbiodegradable petrochemical - basead plastic. The present work it investigated the biodegradation in soil of a PCL/Starch-adipate blend, a natural - based material, according to the ASTM D5988-96 s
Publicado em: 2005