Thermoplastic polyurethane/ multiwalled carbon nanotubes nanocomposites: Effect of nanoparticle content, shear, and thermal processing

2021 ◽  
Author(s):  
Arman Farzaneh ◽  
Amir Rostami ◽  
Hossein Nazockdast
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Thermal Processing ◽  
Thermoplastic Polyurethane ◽  
Multiwalled Carbon ◽  
Nanoparticle Content

scholarly journals Dispersion and characterization of thermoplastic polyurethane/multiwalled carbon nanotubes by melt mixing

2011 ◽  
Vol 122 (6) ◽  
pp. 3744-3750 ◽  
Author(s):  
Adolfo Benedito ◽  
Ignacio Buezas ◽  
Enrique Giménez ◽  
Begoña Galindo ◽  
Amaya Ortega
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Thermoplastic Polyurethane ◽  
Melt Mixing ◽  
Multiwalled Carbon

scholarly journals Enhanced mechanical properties of multiwalled carbon nanotubes/thermoplastic polyurethane nanocomposites

2019 ◽  
Vol 9 ◽  
pp. 184798041984085 ◽  
Author(s):  
P Kalakonda ◽  
S Banne ◽  
PB Kalakonda
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Composite Scaffold ◽  
Thermoplastic Polyurethane ◽  
Three Dimensional ◽  
Tensile Modulus ◽  
Polymer Nanocomposite ◽  
Polymer Chains ◽  
Multiwalled Carbon

Carbon nanotubes are considered to be ideal candidates for improving the mechanical properties of polymer nanocomposite scaffolds due to their higher surface area, mechanical properties of three-dimensional isotropic structure, and physical properties. In this study, we showed the improved mechanical properties prepared by backfilling of preformed hydrogels and aerogels of individually dispersed multiwalled carbon nanotubes (MWCNTs-Baytubes) and thermoplastic polyurethane. Here, we used the solution-based fabrication method to prepare the composite scaffold and observed an improvement in tensile modulus about 200-fold over that of pristine polymer at 19 wt% MWCNT loading. Further, we tested the thermal properties of composite scaffolds and observed that the nanotube networks suppress the mobility of polymer chains, the composite scaffold samples were thermally stable well above their decomposition temperatures that extend the mechanical integrity of a polymer well above its polymer melting point. The improved mechanical properties of the composite scaffold might be useful in smart material industry.

The Study on the Microstructures and High Performances of Melt Blending Polyurethane/Multiwalled Carbon Nanotubes Composites

2008 ◽  
Vol 16 (8) ◽  
pp. 509-518 ◽  
Author(s):  
Fengdan Jiang ◽  
Sizhu Wu ◽  
Yongji Wei ◽  
Liqun Zhang ◽  
Guohua Hu
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Electron Microscope ◽  
Multiwalled Carbon Nanotubes ◽  
Microphase Separation ◽  
Thermoplastic Polyurethane ◽  
Melt Blending ◽  
Scanning Calorimetry ◽  
Multiwalled Carbon ◽  
High Temperature Tensile

A melt blending process was employed to prepare nanocomposites based on thermoplastic polyurethane (TPU) and multiwalled carbon nanotubes (MWNT). The content of MWNT filled in TPU was increased till 40 phr (parts per hundreds of rubber). The morphological, structural and mechanical properties of the resulting TPU nanocomposites were systematically investigated using scanning electron microscope (SEM), transmission electron microscope (TEM), differential scanning calorimetry (DSC), X-ray diffraction (XRD), dynamic mechanical thermal analysis (DMTA) and tensile testing. The results indicated that the unmodified MWNT were dispersed finely and uniformly in the TPU matrix beyond expectation, and the microphase separation structures of the TPU nanocomposites were slightly affected by the presence of MWNT. The mechanical properties of the TPU nanocomposites containing various amounts of MWNT at both room temperature and 120 °C were studied, which demonstrated that the modulus of TPU were greatly increased and the high temperature tensile strength of TPU was also prominently improved when MWNT content is higher. Moreover, the TPU nanocomposites exhibited improved thermal and electrical conductivities that might mean the TPU/MWNT nanocomposites have potential application as multifunctional materials.

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