PET-SWNT nanocomposites through ultrasound assisted dissolution-evaporation

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PET-SWNT nanocomposites through ultrasound assisted dissolution-evaporation

Show simple item record Rani, Joseph 2008-09-01T07:23:06Z 2008-09-01T07:23:06Z 2007-03-05
dc.identifier.other, European Polymer Journal 43 (2007) 2279-2285
dc.description.abstract Poly(ethylene terephthalate) (PET) based nanocomposites have been prepared with single walled carbon nanotubes (SWNTs) through an ultrasound assisted dissolution-evaporation method. Differential scanning calorimetry studies showed that SWNTs nucleate crystallization in PET at weight fractions as low as 0.3%, as the nanocomposite melt crystallized during cooling at temperature 24 °C higher than neat PET of identical molecular weight. Isothermal crystallization studies also revealed that SWNTs significantly accelerate the crystallization process. Mechanical properties of the PETSWNT nanocomposites improved as compared to neat PET indicating the effective reinforcement provided by nanotubes in the polymer matrix. Electrical conductivity measurements on the nanocomposite films showed that SWNTs at concentrations exceeding 1 wt% in the PET matrix result in electrical percolation. Comparison of crystallization, conductivity and transmission electron microscopy studies revealed that ultrasound assisted dissolution-evaporation method enables more effective dispersion of SWNTs in the PET matrix as compared to the melt compounding method en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.subject PET en_US
dc.subject SWNTs en_US
dc.subject Ultrasonication en_US
dc.subject Conductivity en_US
dc.subject Crystallization en_US
dc.title PET-SWNT nanocomposites through ultrasound assisted dissolution-evaporation en_US
dc.type Working Paper en_US

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