scholarly journals Thermal and Structural Properties of High Density Polyethylene/Carbon Nanotube Nanocomposites: A Comparison Study

Chemosensors ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 136
Author(s):  
Ayat Bozeya ◽  
Yahia F. Makableh ◽  
Rund Abu-Zurayk ◽  
Aya Khalaf ◽  
Abeer Al Bawab
Keyword(s):  
Carbon Nanotubes ◽  
Polymer Matrix ◽  
High Density Polyethylene ◽  
High Density ◽  
Gravimetric Analysis ◽  
Scanning Calorimetry ◽  
Melt Compounding ◽  
Multi Walled Carbon Nanotubes ◽  
Functionalization Of Carbon Nanotubes ◽  
Walled Carbon Nanotubes

The effects of functionalization of carbon nanotubes on the properties of nanocomposite sheets prepared from high-density polyethylene (HDPE) and carbon nanotubes (CNTs) were investigated. Carbon nanotubes were first oxidized, followed by amine group functionalization. The Fourier transform-infrared (FTIR) spectroscopy results confirm the presence of oxygenated and amide groups at the surface of the CNTs after each treatment. The HDPE/CNT nanocomposites sheets were prepared using a melt compounding method. Six types of CNTs were used; pristine Single-walled Carbon nanotubes (SWCNT) and pristine Multi-walled Carbon nanotubes (MWCNT), oxidized (O-SWCNT and O-MWCNT) and amide (Amide-SWCNT and Amide-MWCNT). All prepared nanocomposite sheets were characterized using Thermal gravimetric analysis (TGA), Differential scanning calorimetry (DSC), X-ray diffraction (XRD) and scanning electronic microscope (SEM). TGA results measured increased thermal stability of the polymer with the addition of CNTs, O-MWCNT showed the best enhancement. XRD measurements confirmed that the addition of CNTs did not change the crystal structure of the polymer, although the crystallinity was decreased. The maximum crystallinity decrease resulted from O-SWNTs addition to the polymer matrix. SEM imaging showed that oxidized and functionalized CNTs have more even dispersion in the polymer matrix compared with pristine CNTs.

Performance characteristics of polyethylene/old corrugated container composites reinforced with carbon nanotubes

2016 ◽  
Vol 51 (18) ◽  
pp. 2665-2673 ◽  
Author(s):  
Behzad Kord ◽  
Mehdi Roohani
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
High Density Polyethylene ◽  
Analysis Data ◽  
High Density ◽  
Scanning Calorimetry ◽  
Polyethylene Matrix ◽  
Melt Compounding ◽  
The Impact ◽  
Thermal Stability Of

The physical, mechanical, thermal, and flammability properties of high-density polyethylene/old corrugated container composites reinforced with carbon nanotubes are presented in this study. High-density polyethylene/old corrugated container composites with different loadings of carbon nanotube (0, 1, 3, and 5 phc) were prepared by melt compounding followed by injection molding. Results indicated that the incorporation of carbon nanotube into high-density polyethylene, significantly improved the mechanical properties of the composites. The tensile and flexural properties achieved the maximum values when 3 phc carbon nanotube was added. Meanwhile, the impact strength of the composites progressively decreased with increasing carbon nanotube content. Furthermore, the water absorption and thickness swelling of the samples remarkably reduced with the addition of carbon nanotube. From thermogravimetric analysis data, the presence of carbon nanotube could enhance the thermal stability of the composites, especially the maximum weight loss rate temperature and also the better char residual was obtained at high loading level of carbon nanotube. Simultaneous differential scanning calorimetry thermograms revealed that the thermal degradation temperatures for the samples with carbon nanotube were much higher than those made without carbon nanotube. Moreover, it was found that the addition of carbon nanotube results in a significant enhancement in flame retardancy of the composites. Morphological observations showed that the nanoparticles were predominantly dispersed uniformly within the high-density polyethylene matrix.

Study on Preparation and Properties of Hyperbranched Polyurethane/Multi-Walled Carbon Nanotubes Composites

2013 ◽  
Vol 716 ◽  
pp. 103-108
Author(s):  
Ning Sun ◽  
Jun Chao Wang ◽  
Chun Yun Feng ◽  
Yi Biao Li ◽  
Shao Hua Jiang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Hydroxyl Groups ◽  
Gravimetric Analysis ◽  
Test Results ◽  
Scanning Calorimetry ◽  
Hyperbranched Polyurethane ◽  
Multi Walled Carbon Nanotubes ◽  
Ft Ir ◽  
Walled Carbon Nanotubes ◽  
Better Than

With the Grafting to method, the hyperbranched polyurethane/multi-walled carbon nanotubes composites (MWNT-HBPU) was prepared. The reaction mechanism was covalently grafting hyperbranched polyurethane to multi-walled carbon nanotubes,through the reaction of the isocyanate groups of multi-walled carbon nanotubes (MWNT-NCO) and the hydroxyl groups of homemade hyperbranched polyurethane (HBPU). The structure and properties of the composites was studied by Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy (Raman), Thermal gravimetric analysis (TG) and Differential scanning calorimetry (DSC). The test results of FT-IR and TG showed that the prepared product was MWNT-HBPU; the DSC results demonstrated that the glass transition temperature of HBPU was significantly increased from 91.9°C to more than 99.7°C by the addition of MWNT-HBPU; the dispersion of the MWNT-HBPU was much better than the pure MWNT in solvents, such as N, N-dimethylformamide , Dimethyl sulfoxide etc.

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