The effect of ultra-thin graphite on the morphology and physical properties of thermoplastic polyurethane elastomer composites |
| |
Authors: | Olivia Menes Manuela Cano Adolfo Benedito Enrique Giménez Pere Castell Wolfgang K Maser Ana M Benito |
| |
Affiliation: | 1. Materials_Research_Group, AIMPLAS, Instituto Tecnológico del Plástico, C/Gustave Eiffel 4, E-46980 Paterna, Valencia, Spain;2. Department of Chemical Processes and Nanotechnology, Instituto de Carboquímica, ICB-CSIC, C/Miguel Luesma Castán 4, E-50018 Zaragoza, Spain;3. Instituto de Tecnología de Materiales, Universidad Politécnica de Valencia, E-46022 Valencia, Spain;4. NANOZAR S L, Miguel Luesma Castán 4, E-50018 Zaragoza, Spain |
| |
Abstract: | Composites of thermoplastic polyurethane (TPU) and ultra-thin graphite (UTG) with concentrations ranging from 0.5 wt.% 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 °C and 10 °C, 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. |
| |
Keywords: | A Nano composites A Functional composites A Polymers A Graphite B Thermomechanical properties |
本文献已被 ScienceDirect 等数据库收录! |
|