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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/5535

Title: Effect of surface funcionalized carbon nanotubes on the morphology, as well as thermal, thermomechanical, and crystallization properties of polyactide
Authors: Ramontja, J
Ray, SS
Pillai, SK
Luyt, AS
Keywords: Carbon nanotubes
Polyactide
Polyactide properties
Ceramics
Composites
Nanocomposites
Issue Date: Jan-2011
Citation: Ramontja, J, Ray, SS, Pillai, SK and Luyt , AS. 2011. Effect of surface funcionalized carbon nanotubes on the morphology, as well as thermal, thermomechanical, and crystallization properties of polyactide. 35th International conference and exposition on advanced ceramics and composites, Daytona, Florida, 23-28 January 2011
Series/Report no.: Workflow request;7908
Abstract: This paper discusses various properties of Poly(lactide) upon nanocomposite formation with functionalized multiwalled carbon nanotubes (f-MWCNTs). The composite was prepared through melt extrusion technique. Functionalization of carbon nanotubes and possible interaction with PLA chains was investigated through attenuated total reflectance (ATR) Fourier transformed-infrared (FT-IR) and Raman spectroscopies. Scanning electron microscope (SEM) and polarized optical microscope (POM- in melt state) also revealed homogenous dispersion of f-MWCNTs in the PLA matrix with some agglomerates. Melting and crystallization phenomena of the nanocomposite studied through differential scanning calorimeter (DSC), wide angle X-ray scattering (WAXS), and POM show that f-MWCNTs facilitates nucleation and crystal growth of PLA matrix significantly. Thermogravimetric analyses (TGA) reveal that overall thermal stability of PLA matrix improves slightly upon the nanocomposite formation. Thermomechanical analyses also reveal a significant increase in modulus of the nanocomposite at room temperature, which drops suddenly across glass transition temperature. This is an indication of plasticization effect.
Description: 35th International conference and exposition on advanced ceramics and composites, Daytona, Florida, 23-28 January 2011
URI: http://hdl.handle.net/10204/5535
Appears in Collections:Polymers and composites
National Centre for nano-structured materials
Nanotechnology
Polymers and bioceramics
General science, engineering & technology

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