Consulta: creatorFacets:"Marconato,José Carlos"
Registros recuperados: 2
Data/hora: 15/06/2024 18:25:36

Biodegradation of blend films PVA/PVC, PVA/PCL in soil and soil with landfill leachate
Provedor de dados: 52
Autores: Campos,Adriana de; Marconato,José Carlos; Martins-Franchetti,Sandra Mara.
This study investigated the biodegradation of blends films of poly(vinyl alcohol)/poly(vinyl chloride) (PVA/PVC) and poly(vinyl alcohol)/poly(caprolactone) (PVA/PCL) blends films prepared with dimethylformamide under a variety of conditions by respirometry, spectrophotometry (FTIR), scanning electron microscopy (SEM), and contact angle. The films were buried in the garden soil and in the soil mixed with the landfill leachate for 120 days at 28ºC. Significant levels of biodegradation were achieved in fairly short incubation times in the soil. The results indicated that PVA was the most biodegradable film in the soil and in the soil with the leachate.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Synthetic polymers; Biodegradable polymers; Soil; Poly/vinyl alcohol; Poly/caprolactone; Poly/vinyl chloride.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000600024

Architecture and relevance of several strongly adhered biofilms over a polyester imide (PEI) surface
Provedor de dados: 58
Autores: Soncini-Júnior,Giancarlo; Franchetti,Sandra Mara Martins; Marconato,José Carlos.
A microscopical study was undertaken to analyze the eventual fungi adhesion over a polyester imide surface in enameled copper wires. Scanning electron microscopy allowed to observe in these adhered biofilms, a high amount of pigments, hyphae and its enzymatic arsenal probably acting in the surface of the polymer. Due to the highly aromatic nature of this polyester and the residual phenol derivates still present in the reticulated polymer, an antifungal activity could be expected, but no significant changes were noted in fungal growing and in the adhesion process. Additionally, the wires showed completely failure in all insulation properties. The studies aimed to understand and evaluate the great fungi potential that could be explored in biodeterioration...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fungi; Biofilms; Hyphae; Pigments; Adhesion; Scanning electron microscopy; Polymeric surface; Polyester-imide; Enameled copper wires.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000500036