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Anchoring Effect on the Mechanical Properties of CNTs Grown Carbon Fiber/Polymer Matrix Multi-Scale Composites

DSpace at IIT Bombay

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Title Anchoring Effect on the Mechanical Properties of CNTs Grown Carbon Fiber/Polymer Matrix Multi-Scale Composites
 
Creator SHARMA, SP
LAKKAD, SC
 
Subject nanotube composites
raman-spectra
nanocomposites
carbon fibers
carbon nanotubes
composites
surface morphology
electron microscopy
mechanical properties
raman spectra
fractograpgy
 
Description Carbon fibers were uniformly coated with carbon nanotubes by catalytic decomposition of acetylene using thermal chemical vapor deposition technique at 700 degrees C. The nanotube coated fibers were employed for the fabrication of unidirectional multi-scale composites with epoxy matrix. As the carbon nanotubes were directly grown on carbon fibers they remain firmly attached with the fiber substrate therefore they are anticipated to modify the interfacial characteristics of the composites and in turn considerably alter the mechanical behavior. Moreover, the direct growth of carbon nanotubes on fiber facilitates uniform distribution of carbon nanotubes in the polymer matrix. The composite specimens made of carbon nanotubes coated fibers showed a significant enhancement of 48% and 85% in the tensile and flexure strength respectively as compared to composites made of carbon fibers undergone similar thermal cycle but without carbon nanotubes growth. The morphology of carbon nanotubes coating on carbon fibers was examined at nano-level using high resolution TEM which showed growth of carbon nanotubes with different morphology and diameter ranging from 5-50 nm. Specimens failed in tensile were further investigated for fractographic analysis using SEM which showed improved fiber/matrix interfacial bonding indicated by less fiber pull out.
 
Publisher BENTHAM SCIENCE PUBL LTD
 
Date 2011-07-18T23:37:36Z
2011-12-26T12:50:53Z
2011-12-27T05:37:04Z
2011-07-18T23:37:36Z
2011-12-26T12:50:53Z
2011-12-27T05:37:04Z
2009
 
Type Article
 
Identifier CURRENT NANOSCIENCE, 5(3), 306-311
1573-4137
http://dspace.library.iitb.ac.in/xmlui/handle/10054/5102
http://hdl.handle.net/10054/5102
 
Language en