Ciencia y Tecnologías Químicas >
Instituto de Carboquímica (ICB) >
(ICB) Artículos >
Open Access item The effect of ultra-thin graphite on the morphology and physical properties of thermoplastic polyurethane elastomer composites
Maser, Wolfgang K.
Benito, Ana M.
|Keywords:||Nano composites, functional composites, Polymers, Graphite, Thermomechanical properties|
|Citation:||Composites Science and Technology 72(13) : 1595-1601 (2012)|
|Abstract:||Composites of thermoplastic polyurethane (TPU) and ultra-thin graphite (UTG) with
concentrations ranging from 0.5 to 3 wt% were prepared using a solution compounding
strategy. Substantial reinforcing effects with increased loadings are achieved. Compared
to neat TPU, values for storage modulus and shear viscosity are enhanced by 300 % and
150 %, respectively, for UTG concentrations of 3 wt%. Additionally, an enhancement
of thermal properties is accomplished. The crystallization temperature and thermal
stability increased by 30 ºC and 10 ºC, respectively, compared to neat TPU.
Furthermore, the use of oxidized UTG (UTGO) with its added functional oxygen
groups suggests the presence of chemical interactions between UTG and TPU, which
additionally impact on the thermal properties of the corresponding composites.
Controlling the oxidation degree, thus offers further possibilities to obtain composites
with tailored properties. The presented approach is straightforward, leads to
homogeneous TPU-UTG composites with improved materials properties and is
especially suitable for commercial UTG materials and further up-scaled production.|
|Publisher version (URL):||http://dx.doi.org/10.1016/j.compscitech.2012.06.016|
|Appears in Collections:||(ICB) Artículos|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.