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Biodegradable polymer nanocomposites based on natural nanotubes: effect of magnetically modified halloysite on the behaviour of polycaprolactone

Published online by Cambridge University Press:  02 January 2018

Viera Khunová ,
Ivo Šafařík ,
Martin Škrátek ,
Ivan Kelnar  and
Katarína Tomanová
Viera Khunová*
Affiliation:
Institute of Natural and Synthetic Polymers, Slovak University of Technology, FCHPT, Radlinského 9, Bratislava 812 37, Slovakia
Ivo Šafařík
Affiliation:
Department of Nanobiotechnology, Biology Centre, CAS, Na Sádkách 7, České Budejovice 370 05, Czech Republic
Martin Škrátek
Affiliation:
Institute of Measurement Science, Slovak Academy of Sciences, Dúbravská cesta 9, Bratislava 841 04, Slovakia
Ivan Kelnar
Affiliation:
Institute of Macromolecular Chemistry, Academy of Science of the Czech Republic, Heyrovsky Sq. 2, Prague 16206, Czech Republic
Katarína Tomanová
Affiliation:
Institute of Natural and Synthetic Polymers, Slovak University of Technology, FCHPT, Radlinského 9, Bratislava 812 37, Slovakia
*
*E-mail: viera.khunova@stuba.sk
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Abstract

The present study explores the effect of a magnetically modified halloysite (mHNT) surface on the structure and properties of biodegradable polymer nanocomposites based on poly ɛ-caprolactone (PCL). Halloysite nanotubes (HNTs) have been modified by a scalable and tunable procedure using magnetic Fe oxide particles prepared by microwave-assisted synthesis fromferrous sulfate at high pH. The HNT content in composites prepared in melt varied from 5 to 30 wt.%. Application of magnetically modified HNT to PCL resulted in the formation of soft magnetic materials. Analyses of the nanocomposite structure revealed that both natural and magnetized HNTs, as well as free magnetite particles are dispersed uniformly in the polymer matrix. Investigation of the mechanical and physical properties confirmed that the reinforcing ability of HNTs was not affected by magnetic modification.

Keywords

magnetically modified HNTsbiodegradable polymer nanocompositespolycaprolactone
Type
Research Article
Information
Clay Minerals , Volume 51 , Issue 3 , June 2016 , pp. 435 - 444
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2016

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