TY - GEN
T1 - The effect of surface functionalized carbon nanotubes on the morphology, as well as thermal, thermomechanical, and crystallization properties of polylactide
AU - Ramontja, James
AU - Ray, Suprakas Sinha
AU - Pillai, Sreejarani K.
AU - Luyt, Adriaan S.
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=82355191880&partnerID=8YFLogxK
U2 - 10.1002/9781118095362.ch6
DO - 10.1002/9781118095362.ch6
M3 - Conference contribution
AN - SCOPUS:82355191880
SN - 9781118059920
T3 - Ceramic Engineering and Science Proceedings
SP - 53
EP - 67
BT - Nanostructured Materials and Nanotechnology V - A Collection of Papers Presented at the 35th International Conference on Advanced Ceramics and Composites, ICACC
PB - American Ceramic Society
T2 - Nanostructured Materials and Nanotechnology V - 35th International Conference on Advanced Ceramics and Composites, ICACC
Y2 - 23 January 2011 through 28 January 2011
ER -