Effects of melt-processing conditions on the quality of poly(ethylene terephthalate) montmorillonite clay nanocompositesContribution from the March 2002 Meeting of the American Physical Society—Division of Polymer Physics, Indianapolis, Indiana

Autor: Davis, Cher H., Mathias, Lon J., Gilman, Jeffrey W., Schiraldi, David A., Shields, J. Randy, Trulove, Paul, Sutto, Tom E., Delong, Hugh C.
Zdroj: Journal of Polymer Science Part B: Polymer Physics; 1 December 2002, Vol. 40 Issue: 23 p2661-2666, 6p
Abstrakt: Organically modified montmorillonite was synthesized with a novel 1,2-dimethyl-3-N-alkyl imidazolium salt or a typical quaternary ammonium salt as a control. Poly(ethylene terephthalate) montmorillonite clay nanocomposites were compounded via melt-blending in a corotating mini twin-screw extruder operating at 285 °C. The nanocomposites were characterized with thermal analysis, X-ray diffraction, and transmission electron microscopy to determine the extent of intercalation and/or exfoliation present in the system. Nanocomposites produced with N,N-dimethyl-N,N-dioctadecylammonium treated montmorillonite (DMDODA-MMT), which has a decomposition temperature of 250 °C, were black, brittle, and tarlike resulting from DMDODA degradation under the processing conditions. Nanocomposites compounded with 1,2-dimethyl-3-N-hexadecyl imidazolium treated MMT, which has a decomposition temperature of 350 °C, showed high levels of dispersion and delamination. © 2002 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 40: 2661–2666, 2002
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