Polypropylene nanocomposities studied by local micro- and nano-mechanical measurements

0361430 - ÚTAM 2012 RIV CZ eng J - Journal Article
Zamfirova, G. - Bláhová, O. - Minster, Jiří - Gaydarov, V.
Polypropylene nanocomposities studied by local micro- and nano-mechanical measurements.
Chemické listy. Roč. 105, č. 17 (2011), s. 725-728. ISSN 0009-2770. E-ISSN 1213-7103
R&D Projects: GA AV ČR(CZ) IAA200710801
Institutional research plan: CEZ:AV0Z20710524
Keywords : polypropylene composites * carbon nanotubes * indentation * microhardness
Subject RIV: JI - Composite Materials
Impact factor: 0.529, year: 2011

This paper reports on a micro- and nano-indentation investigation of iPP filled with multiwall carbon nanotubes (MWCNT). Wickers microhardness and Total microhardness were determined using a mhp- 150 microhardness tester and a NU-2 light microscope. Elastic modulus, instantaneous compliance and hardness were obtained using an XP Nano Indenter. It was established that a small weight fractions of MWCNT significantly improves the microindentation parameters. A comparison of the results of the two measuring techniques showed a relatively large difference in hardness values. This may be related to the different physical nature of the measured microhardness characteristic. There is a discussion presented of the similarity and/or difference in the microhardness values from the viewpoint of the trend of concentration dependencies and also their physical peculiarities.
Permanent Link: http://hdl.handle.net/11104/0198742