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Polyoxymethylene modified by montmorillonite - preparation, characterisation, properties

Krzysztof Pielichowski ,  Agnieszka Leszczynska ,  Jan Pielichowski 

Cracow University of Technology, Department of Chemistry and Technology of Polymers, ul. Warszawska 24, Kraków 31-155, Poland

Abstract

Polyoxymethylene is one of the important engineering polymers which is characterised by high mechanical and thermal stability, as well as barrier properties. The recent developments are focused on POM-based nanomaterials that incorporate nanofillers homogeneously distributed in the polymer matrix. One of the most promising is montmorillonite (MMT) which consists of layers made up of two silicate tetrahedron fused to an adge-shared octahedral sheet of either aluminium or magnesium hydroxide. Contrary to conventional microcomposites that require few tens wt % of filler to rich desirable improvement in mechanical properties, nanocomposites offer significant improvement at filler content of only few wt %. Such low-filled polymeric compositions have processing properties similar to this of pristine resin and typical problems of microcomposites' processing, such as changes in melt viscosity or surface roughness of moulded parts, do not occur [1,3].

In our work we have obtained by injection molding a series of organomodified POM-MMT nanocomposites which were then subjected to structural, morphological, thermal analysis and mechanical properties investigations which will be reported in the presentation.

Acknowledgements

Authors are grateful to the Polish State Committee for Scientific Research for financial support under grant PBZ-KBN-095/T08/2003.

 

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Related papers

Presentation: Oral at E-MRS Fall Meeting 2006, Symposium D, by Krzysztof Pielichowski
See On-line Journal of E-MRS Fall Meeting 2006

Submitted: 2006-05-15 06:57
Revised:   2009-06-07 00:44