Dynamic- and Thermo-mechanical Analysis of Inorganic Nanotubes/elastomer Composites

Autor(en)

Armin Fuith, Marius Reinecker, Antoni Sanchez-Ferrer, Raffaele Mezzenga, Ales Mrzel, Maris Knite, Ilze Aulika, Marija Dunce, Wilfried Schranz

Abstrakt

We present dynamic mechanical analysis (DMA) and thermomechanical analysis (TMA) measurements of a new type of polyurea elastomer nanocomposites based on inorganic MoS2 nanotubes and Mo6S2I8 nanowires. The addition of a small amount of nanoparticles (<1 wt-%) leads to an increase of the glass transition temperature Tg as compared to the pure elastomeric matrix. A second peak observed in tand in the pure and mixed elastomer is attributed to a second glass transition occurring in regions near the hard nanodomains of the microphase separated polyurea system. It is also found that the small amount of nanoparticles leads to an increase in the Young´s modulus of up to 15 % in the whole measured temperature range (from -130 °C to 20 °C). The thermal expansion of doped samples is considerably larger above Tg. Below Tg, this difference vanishes completely. A very similar behaviour was also found in measurements of polyisoprene/multiwall carbon nanotube (MWCNT) composites.

Organisation(en)

Physik Funktioneller Materialien

Externe Organisation(en)

Eidgenössische Technische Hochschule Zürich, Jožef Stefan Institute (IJS), Riga Technical University, University of Latvia (LU)

Journal

Sensors & Transducers Journal

Band

12

Seiten

71-79

Anzahl der Seiten

9

ISSN

1726-5479

Publikationsdatum

2011

Peer-reviewed

Ja

ÖFOS 2012

103018 Materialphysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/eaf4f724-a020-4afd-a633-344d6b3b8ed1