Strain‐sensing behavior of flexible polypropylene/poly(ethylene‐co‐octene)/multiwalled carbon nanotube nanocomposites under cyclic tensile deformation

2021 ◽  
Author(s):  
Zhongguo Zhao ◽  
Siyang Shen ◽  
Yapeng Li ◽  
Xin Zhang ◽  
Juqiao Su ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Tensile Deformation ◽  
Multiwalled Carbon Nanotube ◽  
Strain Sensing ◽  
Multiwalled Carbon ◽  
Poly Ethylene

Structure-property relationships in polypropylene/poly(ethylene-co-octene)/multiwalled carbon nanotube nanocomposites prepared via a novel eccentric rotor extruder

2018 ◽  
Vol 38 (5) ◽  
pp. 427-435 ◽  
Author(s):  
Cong Meng ◽  
Jin-ping Qu
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotube ◽  
Multiwalled Carbon Nanotube ◽  
Structure Property ◽  
Excellent Performance ◽  
Scanning Calorimetry ◽  
Multiwalled Carbon ◽  
Eccentric Rotor ◽  
Elongation Flow ◽  
Poly Ethylene

Abstract In this work, polypropylene/poly(ethylene-co-octene)/multiwalled carbon nanotube (PP/POE/MWCNT) nanocomposites with different contents of MWCNTs were prepared by an eccentric rotor extruder to obtain engineering materials with excellent performance capability. Microphotographs (scanning electron microscopy and transmission electron microscopy) and dynamic mechanical analysis indicate that the MWCNTs were well dispersed in the polymer matrix under the elongation flow. The crystallization behavior was explored by X-ray diffraction and differential scanning calorimetry. The results show that MWCNTs promote heterogeneous nucleation and improve the To, Tc and Te values of the composites. On the basis of the rheology analysis, the complex viscosity of the PP/POE/MWCNT composites increased and formed an obvious Newton plat in the low-frequency range; both the G′ and G″ of all the samples increased monotonically, and a percolation threshold appeared for 1 wt% MWCNTs. Thus, the mechanical properties of the nanocomposites prepared under an elongation flow lead to an effective strengthening of PP/POE better than under a shear flow. This work provides a novel method based on elongational rheology to prepare engineered materials that possess excellent performance capabilities.

Characterization of Electrical and Mechanical Properties for Coaxial Nanofibers with Poly(ethylene oxide) (PEO) Core and Multiwalled Carbon Nanotube/PEO Sheath

2008 ◽  
Vol 41 (7) ◽  
pp. 2509-2513 ◽  
Author(s):  
Satyajeet S. Ojha ◽  
Derrick R. Stevens ◽  
Kelly Stano ◽  
Torissa Hoffman ◽  
Laura I. Clarke ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotube ◽  
Ethylene Oxide ◽  
Multiwalled Carbon Nanotube ◽  
Multiwalled Carbon ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene
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