Functionalization of Silica Nanoparticles for Polypropylene Nanocomposite Applications
Joint Authors
Quijada, Raúl
Bracho, Diego
Dougnac, Vivianne N.
Palza, Humberto
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-09-30
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Synthetic silica nanospheres of 20 and 100 nm diameter were produced via the sol-gel method to be used as filler in polypropylene (PP) composites.
Modification of the silica surface was further performed by reaction with organic chlorosilanes in order to improve the particles interaction with the hydrophobic polyolefin matrix.
These nanoparticles were characterized using transmission electronic microscopy (TEM), elemental analysis, thermogravimetric analysis (TGA), and solid-state nuclear magnetic resonance (NMR) spectroscopy.
For unmodified silica, it was found that the 20 nm particles have a greater effect on both mechanical and barrier properties of the polymeric composite.
In particular, at 30 wt%, Young's modulus increases by 70%, whereas water vapor permeability (WVP) increases by a factor of 6.
Surface modification of the 100 nm particles doubles the value of the composite breaking strain compared to unmodified particles without affecting Young's modulus, while 20 nm modified particles presented a slight increase on both Young's modulus and breaking strain.
Modified 100 nm particles showed a higher WVP compared to the unmodified particles, probably due to interparticle condensation during the modification step.
Our results show that the addition of nanoparticles on the composite properties depends on both particle size and surface modifications.
American Psychological Association (APA)
Bracho, Diego& Dougnac, Vivianne N.& Palza, Humberto& Quijada, Raúl. 2012. Functionalization of Silica Nanoparticles for Polypropylene Nanocomposite Applications. Journal of Nanomaterials،Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-997491
Modern Language Association (MLA)
Bracho, Diego…[et al.]. Functionalization of Silica Nanoparticles for Polypropylene Nanocomposite Applications. Journal of Nanomaterials No. 2012 (2012), pp.1-8.
https://search.emarefa.net/detail/BIM-997491
American Medical Association (AMA)
Bracho, Diego& Dougnac, Vivianne N.& Palza, Humberto& Quijada, Raúl. Functionalization of Silica Nanoparticles for Polypropylene Nanocomposite Applications. Journal of Nanomaterials. 2012. Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-997491
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-997491