materials-summit-separation-summit-2018-tracks

9 / 11

Page 29
O c t o b e r 1 9 - 2 0 , 2 0 1 8 | T o k y o , J a p a n
Materials Summit 2018 & Separation Summit 2018 Materials Science and Nanotechnology | Volume 2
ADVANCED MATERIALS AND POLYMER SCIENCE
SEPARATION TECHNIQUES
&
International Conference on
International Conference and Expo on
Joint Event on
OF EXCELLENCE
IN INTERNATIONAL
MEETINGS
YEARS
A Oufakir et al., Mater Sci Nanotechnol 2018, Volume 2
CONTRIBUTION TO THE IMPROVEMENT
OF THE PROPERTIES OF SIO2- BASED
POLYMER COMPOSITES MATERIALS
A Oufakir1,2 , L Khouchaf2, M Elaatmani1 and A Zegzouti1
1Université Cadi Ayyad Marrakech, Morocco
2Lille Université, France
In recent years, silica has found interesting applications in a variety of
disciplines including concrete, catalysis, clean technology, separations
science and microelectronics devices. Silica is also a good candidate as
filler in composite polymers. In fact, polymer composites are the advanced
materials alternative to traditional materials such as metals or ceramics and
consist of at least two constituents of different phase, one of them being
continuous polymeric matrix phase and other is reinforcements (fibers, filler).
Interaction between the filler and the polymer matrix is a key of the properties
of the polymer composites. The control of the interface of the filler is the very
important without the addition of chemical agent. Although it is challenging to
determine the true surface of SiO2 compounds to avoid hazardous additions.
The specific aim of this work is to study the dependence between structure,
surface state and reactivity of silica for different heterogeneous SiO2
compounds and evaluate the behavior of their surface subject to chemical
stress, to increase reactive ability of theirs surfaces to be able to interact with
the molecules of modifiers. The surface morphology of silica is examined
by variable pressure scanning electron microscope (VP-SEM) and showed
the original fibrous surface of silica quartz. The FTIR frequency shift of the
bridging oxygen stretching vibration Si–O–Si is observed and the intensity
ratio between Si-OH band and Si-O-Si increases is determined. Furthermore,
x-ray diffraction showed that the quartz lattice was conserved during the
treatment with a shift of the main peak 101 in agreement with the infrared
results on the Si-O-Si peak shift and the increase in the intensity ratio of Si-
OH/Si-O-Si. The phase obtained is used to prepare polymer composites with
high thermal and mechanical performances.
A Oufakir has completed his Process Engineer’s de-
gree and enjoyed a successful two-year experience in
teaching Physics at secondary schools in Morocco.
He is pursuing PhD degree at Cadi Ayyad University
of Marrakech in collaboration with the IMT Lille Douai
in France.
BIOGRAPHY
Recent Publications
1. H El Bahraoui, L Khouchaf, A Ben Fraj
(2016). Microscopical and mechanical
evaluation of the durability of SiO2
aggregates. European Physical Journal
of Applied Physics. 74: 2.
2. N Tahiri, L Khouchaf, M Elaatmani, G
Louarn, AZegzouti andMDaoud (2014).
Study of the thermal treatment of SiO2
aggregate. IOP Conf. Series: Materials
Science and Engineering. doi:10.1088/
1757899X/62/1/012002.
3. L Khouchaf, A Hamoudi, P Cordier
(2009). Evidence of depolymerisation
of amorphous silica at medium and
short-range order: XANES, NMR and
CP-SEM contributions. Journal of H.
Materials. 168: 1188.
4. A Hamoudi, L Khouchaf, C Depecker, B
Revel, L Montagne, P Cordier (2008).
Microstructural evolution of amorphous
silica following Alkali-Silica Reaction.
Journal of non Cryst. Solids. 354: 45-46
5074.