Xiao JF, Hu Y, Wang ZH, Tang Y, Chen ZY, Fan WC (2005b) Preparation and characterization of poly(butylene terephthalate) nanocomposites from thermally stable organic-modified montmorillonite. European Polymer Journal 41(5), 1030-1035. [In English]

Web link:http://dx.doi.org/10.1016/j.eurpolymj.2004.11.025

Keywords:

poly(butylene terephthalate) (PBT), cetyl pyridium chloride (CPC), nanocomposites, TGA, DSC, layered-silicate nanocomposites, polymer,

Abstract: In this paper, cetyl pyridium chloride (CPC) was employed to modify the montmorillonite. TGA analysis shows that the organic modified clay has higher thermal stability than hexadecyl trimethyl ammonium chloride modified montmorillonite and is suitable to be used for preparing poly(butylene terephthalate) (PBT)/clay nanocomposites at the high temperature. And then PBT/clay nanocomposites were prepared by direct melt intercalation. The results of XRD, TEM and HREM experiments show the formation of exfoliated-intercalated structure. The thermal stability of the nanocomposites does not evidently decrease, but the char residue at 600 degrees C remarkably increase compared with pure PBT. DSC results indicate that clay improves the melting temperature, the crystallization rate and crystallinity of the PBT molecules in the nanocomposites. (c) 2004 Published by Elsevier Ltd.