Poly Hydroxybutyrate Co Hydroxyvalerate Phbv
Mostrando 13-24 de 24 artigos, teses e dissertações.
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13. Nanocompositos de poli(3-hidroxibutirato-co-3-hidroxivalerato) e nanotubos de carbono / Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) carbon nanotubes nanocomposites
This work has evaluated the effect of addition of multi walled carbon nanotubes (NTC) in the thermal and mechanical properties, morphology and hydrophobicity of poly(3-hydroxybutyrate-co-3-hydroxyvalerate), the PHBV. The addition of carbon nanotubes could result in an improvement of PHBV properties, a natural polyester that due to its biodegradability and bi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/06/2010
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14. 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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15. 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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16. Influence of additives incorporation on the properties of Poly(Hydroxybutyrate-co-hydroxyvalerate) PHBV / Influência da incorporação de aditivos nas propriedades do Poli (Hidroxibutirato-co-hidroxivalerato) - PHBV
Atualmente, quando o conceito de ambientalmente correto vem sendo amplamente discutido, o uso de polímeros biodegradáveis aparece como uma alternativa viável para o problema do descarte inadequado de produtos plásticos. O poli(hidroxibutirato) PHB e o copolímero poli(hidroxibutirato-cohidroxivalerato) estão entre os principais membros da classe dos pol
Publicado em: 2008
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17. Vero cells culture on poly poli(hydroxybutyrate-co-hydroxyvalerate) (phbv) membranes treated by gaseous plasma / Cultura de celulas vero sobre membranas de poli(hidroxibutirato-co-hidroxivalerato) (phbv) tratadas por plasma gasoso
O copolímero Poli(hidroxibutirato-co-hidroxivalerato) (PHBV) tem sido intensamente estudado como substrato para a engenharia de tecidos, sendo conhecido como um poliéster hidrofóbico. A modificação da superfície por plasma é uma técnica efetiva e econômica para os materiais e tem ganhado crescente interesse da engenharia biomédica, por melhorar a b
Publicado em: 2006
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18. Use of blends of bioabsorbable poly(L-lactic acid)/poly(hydroxybutyrate- co-hydroxyvalerate) as surfaces for Vero cell culture
Vero cells, a cell line established from the kidney of the African green monkey (Cercopithecus aethiops), were cultured in F-10 Ham medium supplemented with 10% fetal calf serum at 37°C on membranes of poly(L-lactic acid) (PLLA), poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) and their blends in different proportions (100/0, 60/40, 50/50, 40/60, and 0/100)
Brazilian Journal of Medical and Biological Research. Publicado em: 2005-11
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19. Obtenção, caracterização e estudo de biodegradação de blendas de poli (3-hidroxibutirato-co-valerato)/(PHBV) com lignina de bagaço de cana de açucar
The great amount of synthetic polymers discharged every year in the urban solid waste is growing fast and makes difficult to see the future without a global politics to solve this environmental problem. In this way, many groups of researchers are studying solutions that may guarantee a sustainable development, where Man and Environment can live in a good bal
Publicado em: 2003
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20. Films of poly (L - lactic acid) / poly(hydroxybutyrate-co-hydroxyvalerate) blends: in vitro degradation
Biocompatible and biodegradable polymers have been studied in the last few years with good clinical success in the fixation and stabilization of bone fractures. The understanding and the control of the polymeric prosthetic degradation process and the effect of its degradation products in the organism are crucial for the success of the implant. In this presen
Materials Research. Publicado em: 2001-01
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21. Multiple β-Ketothiolases Mediate Poly(β-Hydroxyalkanoate) Copolymer Synthesis in Ralstonia eutropha
Polyhydroxyalkanoates (PHAs) are a class of carbon and energy storage polymers produced by numerous bacteria in response to environmental limitation. The type of polymer produced depends on the carbon sources available, the flexibility of the organism’s intermediary metabolism, and the substrate specificity of the PHA biosynthetic enzymes. Ralstonia eutrop
American Society for Microbiology.
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22. Metabolic Engineering of a Novel Propionate-Independent Pathway for the Production of Poly(3-Hydroxybutyrate-co-3-Hydroxyvalerate) in Recombinant Salmonella enterica Serovar Typhimurium
A pathway was metabolically engineered to produce poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), a biodegradable thermoplastic with proven commercial applications, from a single, unrelated carbon source. An expression system was developed in which a prpC strain of Salmonella enterica serovar Typhimurium, with a mutation in the ability to metabolize pro
American Society for Microbiology.
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23. Members of the Family Comamonadaceae as Primary Poly(3-Hydroxybutyrate-co-3-Hydroxyvalerate)-Degrading Denitrifiers in Activated Sludge as Revealed by a Polyphasic Approach
The distribution and phylogenetic affiliations of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)-degrading denitrifying bacteria in activated sludge were studied by a polyphasic approach including culture-independent biomarker and molecular analyses as well as cultivation methods. A total of 23 strains of PHBV-degrading denitrifiers were isolated from a
American Society for Microbiology.
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24. Degradation of Starch–Poly(β-Hydroxybutyrate-Co-β-Hydroxyvalerate) Bioplastic in Tropical Coastal Waters
Extruded bioplastic was prepared from cornstarch or poly(β-hydroxybutyrate-co-β-hydroxyvalerate) (PHBV) or blends of cornstarch and PHBV. The blended formulations contained 30 or 50% starch in the presence or absence of polyethylene oxide (PEO), which enhances adherence of starch granules to PHBV. Degradation of these formulations was monitored for 1 year
American Society for Microbiology.