Optimization of Multi-Walled Carbon Nanotube Properties for Composite Production
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Optimization of Multi-Walled Carbon Nanotube Properties for Composite Production
CIC nanoGUNE Seminars
- Speaker
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Vladimir Kuznetsov, Boreskov Institute of catalysis SBRAS / Novosibirsk State University, Novosibirsk, Russia
- When
-
2016/02/22
12:00
- Place
- nanoGUNE seminar room, Tolosa Hiribidea 76, Donostia - San Sebastian
- Add to calendar
-
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Multi-walled carbon nanotubes (MWCNTs) are known as the most perspective
components for numerical composite materials because their remarkable
mechanical, chemical, and electronic properties. At the same time properties
of MWCNTs significantly depend on their structure (defectiveness, diameter
distribution, morphology of agglomerates, concentration of impurities etc.)
which in turn depends on the type of process and on reaction parameters used
for the production. For synthesis of MWCNTs by catalytic CVD techniques the
nature of catalysts (metals, supports, metal-support interaction, and the
effect of promoters), are the most important factors. Production of effective
composites requires fulfillment of conditions of uniform distribution of
MWCNTs in polymer, metal or ceramic matrix which in turn require the formation
of specific interfaces between nanotube surface and composite matrix. The
optimization of nanotube concentration in composite depending on MWCNT
diameter distribution influencing percolation threshold are also crucially
important to provide desirable properties. The analysis of the properties of
MWCNT based composites leads to conclusion that for every type of composite
specific optimal type of nanotubes is required. This paper reviews the
synthesis of MWCNTs using different methods especially focusing on their
structure and properties (mechanical, electrical and chemical). Various
parameters influencing the MWCNT growth and properties along with post
synthesis treatments influencing the nanotube structure and surface
composition are also discussed.