Silvia Elena Barbosa

Prof. Silvia Elena Barbosa


Research Focus & Metrics

Academic Career Length

36Years (1991-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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18 June 2012 in Materials
Verified
Journal Article
Open access
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MEMariana Etcheverry
Mariana Etcheverry
SBSilvia Elena Barbosa
Silvia Elena Barbosa
Glass fibers (GF) are the reinforcement agent most used in polypropylene (PP) based composites, as they have good balance between properties and costs. However, their final properties are mainly determined by the strength and stability of the polymer-fiber interphase. Fibers do not act as an effective reinforcing material when the adhesion is weak. Also, the adhesion between phases can be easily degraded in aggressive environmental conditions such as high temperatures and/or elevated moisture, and by the stress fields to which the material may be exposed. Many efforts have been done to improve polymer-glass fiber adhesion by compatibility enhancement. The most used techniques include modifications in glass surface, polymer matrix and/or both. However, the results obtained do not show a good costs/properties improvement relationship. The aim of this work is to perform an accurate analysis regarding methods for GF/PP adhesion improvement and to propose a new route based on PP in-situ polymerization onto fibers. This route involves the modification of fibers with an aluminum alkyl and hydroxy-α-olefin and from there to enable the growth of the PP chains using direct metallocenic copolymerization. The adhesion improvements were further proved by fragmentation test, as well as by mechanical properties measurements. The strength and toughness increases three times and the interfacial strength duplicates in PP/GF composites prepared with in-situ polymerized fibers.

1 July 2016 in Waste Management
Verified
Journal Article
Closed access
YVYamila V. Vazquez
Yamila V. Vazquez
SBSilvia Elena Barbosa
Silvia Elena Barbosa

7 December 2010 in Journal of Materials Science
Verified
Journal Article
Closed access
PDF file
LCLuciana A. Castillo
Luciana A. Castillo
SBSilvia Elena Barbosa
Silvia Elena Barbosa
PMPedro Maiza
Pedro Maiza
NCNuma J. Capiati
Numa J. Capiati

30 April 2013 in Journal of Polymer Research
Verified
Journal Article
Closed access
PDF file
LCLuciana A. Castillo
Luciana A. Castillo
SBSilvia Elena Barbosa
Silvia Elena Barbosa
NCNuma J. Capiati
Numa J. Capiati


1 August 2002 in Polymer
Verified
Journal Article
Closed access
MDMónica F Diaz
Mónica F Diaz
SBSilvia Elena Barbosa
Silvia Elena Barbosa
NCNuma J Capiati
Numa J Capiati