Tps
Mostrando 13-24 de 214 artigos, teses e dissertações.
-
13. Película biodegradable de almidón de maíz termoplástico y quitosano con actividad antimicrobiana empleada como envase activo
ABSTRACT One of the research lines related to active packaging takes into account the incorporation of antimicrobial agents such as chitosan, a polysaccharide derived from the crustaceans’ exoskeleton. However, because of chitosan high molar mass, its diffusion from the package to the food surface is restricted, so the use of oligomers is an interesting bu
Matéria (Rio J.). Publicado em: 19/07/2018
-
14. Efecto de la adición de bentonita sobre las propiedades ópticas de diferentes materiales compuestos poliméricos
ABSTRACT In this work, composite materials were obtained by the incorporation of bentonite to biodegradable and synthetic polymeric matrices. Commercial (BE) and natural (BM) bentonite samples were employed, as well as three different polymeric matrices: thermoplastic corn starch (TPS), high density polyethylene (HDPE) and a poly(styrene-b-butadiene-b-styren
Matéria (Rio J.). Publicado em: 19/07/2018
-
15. Hyperbranched polyester polyol modified with polylactic acid as a compatibilizer for plasticized tapioca starch/polylactic acid blends
Abstract A hyperbranched polyester polyol of the second generation (HBP2) was modified with polylactic acid (HBP2-g-PLA) and employed as a compatibilizer for plasticized tapioca starch (TPS)/polylactic acid (PLA) blends. The effect of the compatibilizer HBP2- g-PLA was evaluated in comparison to the control sample (TPS/PLA blend without HBP2-g-PLA). The tor
Polímeros. Publicado em: 15/03/2018
-
16. Effect of PVA and PDE on selected structural characteristics of extrusion-cooked starch foams
Abstract The aim of this work was to determine selected physical properties of biodegradable thermoplastic starch (TPS) filling foams manufactured by extrusion-cooking technique from different combinations of potato starch and two additives: poly(vinyl alcohol) PVA and Plastronfoam PDE. Foams were processed with seven starch/additives combinations at two di
Polímeros. Publicado em: 15/03/2018
-
17. Tea polyphenols induce S phase arrest and apoptosis in gallbladder cancer cells
Gallbladder cancer (GBC) is the most common malignancy in the biliary tract. Without effective treatment, its prognosis is notoriously poor. Tea polyphenols (TPs) have many pharmacological and health benefits, including antioxidant, anti-inflammatory, anti-tumor, anti-thrombotic, antibacterial, and vasodilatory properties. However, the anti-cancer effect of
Braz J Med Biol Res. Publicado em: 01/03/2018
-
18. Porção pretarsal visível após blefaroplastia superior sem ou com sutura de brassiere
RESUMO Objetivo: O aumento do TPS (porção pretarsal visível) e a diminuição do BFS (porção preseptal visível) estão associados com resultados favoráveis em mulheres submetidas a blefaroplastia estética. Os autores avaliaram a eficácia da cirurgia de blefaroplastia superior associada ou não à técnica (sutura de brassiere) em aumentar o TPS e d
Arq. Bras. Oftalmol.. Publicado em: 2017-12
-
19. Influence of addition of silanized nanosilica and glycerol on hydrophobicity of starch using a factorial design
Abstract The thermoplastic starch (TPS) is regarded as a promising material for manufacturing packaging and products with biodegradable properties. This study aimed at obtaining hydrophobic starch using silanized silica nanoparticles (nSS) with hexamethyldisilazane. A factorial design 22 with central point was developed to evaluate the influence of glycerol
Polímeros. Publicado em: 21/09/2017
-
20. A produção social da organização do transporte coletivo urbano rodoviário de Porto Alegre - 2012-14
Este artigo analisa a produção social do transporte coletivo urbano rodoviário de Porto Alegre tendo como referência a teoria da produção social (TPS) proposta por Carlos Matus, que explica como a realidade social é produzida por atores que atuam sob condicionamentos e restrições. O estudo analisa interpretativamente dados secundários a partir das
Rev. Adm. Pública. Publicado em: 2017-06
-
21. The effect of gelatin amount on the properties of PLA/TPS/gelatin extruded sheets
Abstract Films and sheets composed by poly (lactic acid) (PLA)/thermoplastic starch (TPS) and TPS/gelatin blends have already been produced and characterized in the literature. However, materials produced with these three biopolymers have not been clearly investigated. In this work, extruded sheets were produced with PLA, TPS (glycerol as plasticizer) and di
Polímeros. Publicado em: 2017-03
-
22. Hyperbranched polyester polyol plasticized tapioca starch/low density polyethylene blends
Abstract In this work, low density polyethylene (LDPE)/plasticized starch (TPS) blends were prepared. The TPS employed in this study was obtained by plasticization of tapioca starch with a hyperbranched polyester polyol. Differential scanning calorimetry analysis showed that the melting temperature increased with the TPS content. The opposite effect was exhi
Polímeros. Publicado em: 2017-03
-
23. Carbon and Nitrogen Stocks and Humic Fractions in Brazilian Organosols
ABSTRACT Despite limited geographic expression of Organosols in Brazil, their high carbon storage capacity and natural environmental vulnerability justifies further studies on C and N stocks in these soils and their relationship to the nature of organic matter. Evaluation of physical and chemical properties of organic soils and their ability to store C is im
Rev. Bras. Ciênc. Solo. Publicado em: 03/11/2016
-
24. Poly(lactic acid)/thermoplastic starch sheets: effect of adipate esters on the morphological, mechanical and barrier properties
Abstract Blends of poly(lactic acid) (PLA) and thermoplastic starch (TPS) plasticized with adipate esters (diisodecyl adipate and diethyl adipate) having different molecular weight were used to produce sheets. The calendering-extrusion process at a pilot scale was used, and the mechanical, barrier, and morphological characterization of the obtained materials
Polímeros. Publicado em: 04/03/2016