Biodegradable Composites
Mostrando 13-24 de 36 artigos, teses e dissertações.
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13. Strategies to improve the mechanical properties of starch-based materials: plasticization and natural fibers reinforcement
Biodegradable polymers are starting to be introduced as raw materials in the food-packaging market. Nevertheless, their price is very high. Starch, a fully biodegradable and bioderived polymer is a very interesting alternative due to its very low price. However, the use of starch as the polymer matrix for the production of rigid food packaging, such as trays
Polímeros. Publicado em: 20/05/2014
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14. Compósitos biodegradáveis de amido de mandioca e resíduos da agroindústria
The objectives of this work were to produce biodegradable composites using starch and different agro-industrial wastes (coconut fiber, soy bran and sugarcane bagasse) using a baking process, and to study the effects of these components on the resultant composite properties. The addition of different residues yielded trays with different properties. Samples m
Quím. Nova. Publicado em: 2013
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15. Síntese e caracterização de misturas poliméricas condutoras para aplicação em membranas biodegradáveis e dispositivos eletroluminescentes / Synthesis and characterization of conducting polymeric blends for use in biodegradable membranes and electroluminescent devices
The electrical properties of some conducting polymers and their blends have contributed to the technological advancement in various areas such as medicine and microelectronics. Recently, photochemical synthesis and spinner techniques have been using to prepare polymeric blends with good conducting properties. In this study we report the preparation of conduc
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/08/2012
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16. 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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17. Desenvolvimento de compósitos biodegradáveis a partir de amido termoplástico e fibras de acuri, carandá e gravatá / Development of biodegradable composites from thermoplastic starch acuri, carandá anda gravatá fibers
Este trabalho de mestrado teve como objetivos principais obter e formular novos materiais compósitos biodegradáveis e de fontes renováveis a partir de uma matriz de amido de milho termoplástico (TPS), reforçada com diferentes teores de fibras vegetais de acuri, carandá e gravatá. Inicialmente foram extraídas e caracterizadas estas fibras vegetais, da
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/09/2011
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18. Tratamentos de fibras de carnaúba [copernicia prunífera (miller) h. e. moore] para o desenvolvimento de compósito biodegradável com matriz de polihidroxibutirato
O uso de matérias-primas de fontes renováveis para a produção de materiais vem sendo objeto de diversos estudos e pesquisas, devido ao seu potencial na substituição de derivados petroquímicos. A adição de fibras vegetais a polímeros representa uma alternativa na substituição parcial ou total de fibras de vidro em compósitos. Neste trabalho, fibr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/06/2011
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19. Avaliação dos efeitos da radiação ionizante em compósitos de PCL/PLLA com fibra de coco / Study of the effect of ionizing radiation on composites based on PCL/PLLA and coconut fiber
O problema do resíduo plástico vem se tornando crucial nos últimos anos no que concerne aos problemas ambientais. Neste cenário, a preparação de compósitos baseados em polímeros e fibra naturais, tais como as da casca de coco, levaria à redução do custo do produto final e a consequente diminuição da quantidade de resíduo do agronegócio descart
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/02/2011
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20. Biodegradable foams based on starch, polyvinyl alcohol, chitosan and sugarcane fibers obtained by extrusion
Biodegradable foams made from cassava starch, polyvinyl alcohol (PVA), sugarcane bagasse fibers and chitosan were obtained by extrusion. The composites were prepared with formulations determined by a constrained ternary mixtures experimental design, using as variables: (X1) starch / PVA (100 - 70%), (X2) chitosan (0 - 2%) and (X3) fibers from sugar cane (0 -
Brazilian Archives of Biology and Technology. Publicado em: 2011-10
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21. Use of micronized sunflower cake as a reinforce material to produce cassava flour biodegradable composites.
2010
INTERNATIONAL CONFERENCE ON FOOD AND AGRICULTURE APPLICATIONS OF NANOTECHNOLOGIES. Publicado em: 2011
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22. OBTENÇÃO E CARACTERIZAÇÃO DE NANOCOMPÓSITOS À BASE DE POLIHIDROXIALCANOATO/ATAPULGITA / EXTRACTION AND CHARACTERIZATION OF NANOCOMPOSITES BASED ON POLYHYDROXYALKANOATE / ATTAPULGITE
Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) PHBV is a biodegradable polyester produced by various microorganisms, which has been studied as an option for the production of disposable items in place of polymers derived from petroleum, thus contributing to the preservation of the environment. However, this thermoplastic has some disadvantages that limit its u
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/03/2010
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23. EXTRACTION AND CHARACTERIZATION OF NANOCOMPOSITES BASED ON POLYHYDROXYALKANOATE / ATTAPULGITE / OBTENÇÃO E CARACTERIZAÇÃO DE NANOCOMPÓSITOS À BASE DE POLIHIDROXIALCANOATO/ATAPULGITA
Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) PHBV is a biodegradable polyester produced by various microorganisms, which has been studied as an option for the production of disposable items in place of polymers derived from petroleum, thus contributing to the preservation of the environment. However, this thermoplastic has some disadvantages that limit its u
Publicado em: 2010
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24. Biodegradable polymer composites based on Brazilian lignocellulosic
Use of eco friendly and energy saving biomaterials and processes have enabled to overcome the effects of growing urbanization and population along with increasing agro-industrial wastes. This has led to a new approach to the industrial design of products and processes along with the implementation of sustainable manufacturing strategies to "optimize the tota
Matéria (Rio de Janeiro). Publicado em: 2010