Document Detail


Preparation and characterization of chrysotile for use as nanofiller in polyolefins.
MedLine Citation:
PMID:  21289402     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Chrysotile was treated using three methods to reduce its toxicity and prepare it for use as nanofiller in olefin polymerization. In two of the treatments chrysotile was leached with hydrochloric acid at different concentrations, 0.1 and 3.0 M, and subsequently subjected to thermal treatment. In the third method the chrysotile was only exposed to a thermal treatment at 800 °C. The treated chrysotiles were characterized by BET, SEM-EDX, XRD, TEM and DRIFTS. The dilute acid treatment was the most efficient and gave a material with a nanotube morphology, with reduced toxicity, high aspect ratio and high concentrations of isolated OH groups. All the treatments gave particles with nanometric dimensions interesting for use as nanofillers in nanocomposites and also as support for catalysts.
Authors:
Silene Pereira da Silva; Ariane P Wander; Rubens Bisatto; Griselda Barrera Galland
Publication Detail:
Type:  Journal Article     Date:  2011-02-02
Journal Detail:
Title:  Nanotechnology     Volume:  22     ISSN:  1361-6528     ISO Abbreviation:  Nanotechnology     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-02-03     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101241272     Medline TA:  Nanotechnology     Country:  England    
Other Details:
Languages:  eng     Pagination:  105701     Citation Subset:  IM    
Affiliation:
Instituto de Química, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 9500, 91501-970 Porto Alegre, Brazil.
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