scholarly journals Comparison of quasistatic to impact mechanical properties of multiwall carbon nanotube/polycarbonate composites

2010 ◽  
Vol 25 (6) ◽  
pp. 1118-1130 ◽  
Author(s):  
Paul A. Brühwiler ◽  
Michel Barbezat ◽  
Adly Necola ◽  
Doug J. Kohls ◽  
Oliver Bunk ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Energy Absorption ◽  
Multiwall Carbon Nanotube ◽  
Negative Effects ◽  
Good Correspondence ◽  
X Ray ◽  
X Ray Scattering ◽  
Negative Function ◽  
Injection Molded ◽  
Multiwall Carbon

We report the quasistatic tensile and impact penetration properties (falling dart test) of injection-molded polycarbonate samples, as a function of multiwall carbon nanotube (MWNT) concentration (0.0–2.5%). The MWNT were incorporated by dilution of a commercial MWNT/polycarbonate masterbatch. The stiffness and quasistatic yield strength of the composites increased approximately linearly with MWNT concentration in all measurements. The energy absorbed in fracture was, however, a negative function of the MWNT concentration, and exhibited different dependencies in quasistatic and impact tests. Small-angle x-ray scattering (SAXS) showed that the dispersion of the MWNT was similar at all concentrations. The negative effects on energy absorption are attributed to agglomerates remaining in the samples, which were observed in optical microscopy and SAXS. Overall, there was a good correspondence between static and dynamic energy absorption.

Characterizing the Morphologies of Mechanically Manipulated Multiwall Carbon Nanotube Films by Small-Angle X-ray Scattering†

2007 ◽  
Vol 111 (48) ◽  
pp. 17933-17940 ◽  
Author(s):  
Benjamin N. Wang ◽  
Ryan D. Bennett ◽  
Eric Verploegen ◽  
Anastasios J. Hart ◽  
Robert E. Cohen
Keyword(s):  
Carbon Nanotube ◽  
Small Angle ◽  
Multiwall Carbon Nanotube ◽  
X Ray ◽  
X Ray Scattering ◽  
Multiwall Carbon ◽  
Nanotube Films ◽  
Ray Scattering

Quantitative Characterization of the Morphology of Multiwall Carbon Nanotube Films by Small-Angle X-ray Scattering

2007 ◽  
Vol 111 (16) ◽  
pp. 5859-5865 ◽  
Author(s):  
Benjamin N. Wang ◽  
Ryan D. Bennett ◽  
Eric Verploegen ◽  
Anastasios J. Hart ◽  
Robert E. Cohen
Keyword(s):  
Carbon Nanotube ◽  
Small Angle ◽  
Multiwall Carbon Nanotube ◽  
Quantitative Characterization ◽  
X Ray ◽  
X Ray Scattering ◽  
Multiwall Carbon ◽  
Nanotube Films ◽  
Ray Scattering

Effect of Strain Rate on Tensile Properties of Injection Molded Multiwall Carbon Nanotube Reinforced PA 6/6 Nanocomposites

2020 ◽  
Author(s):  
Seyed Hamid Reza Sanei ◽  
Hanna Drozynski ◽  
Dakota Hetrick
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotube ◽  
Strain Rate ◽  
Tensile Properties ◽  
Loading Rate ◽  
Multiwall Carbon Nanotube ◽  
Strain Rates ◽  
Chain Mobility ◽  
Injection Molded ◽  
Multiwall Carbon

Abstract The mechanical properties of polymers highly depend on the loading rate, however, the effect of loading/strain rate with the addition of Carbon Nanotube is not well understood. In this study, the effect of Carbon Nanotube (CNT) content on the rate dependence of polymers was studied. Injection molded mini-tensile samples with CNT content ranging from 0 to 15wt% at strain rates of .0006, .0013, .0019 and .0025 s−1 were tested. It was found that as strain rate increased, the ultimate strength and Young s Modulus of the tensile specimens increased. It was also shown that addition of CNT will lower the chain mobility of polymer and lower the polymer dependence of properties to strain rates.

scholarly journals Near-Edge X-ray Absorption Fine Structure Studies of Electrospun Poly(dimethylsiloxane)/Poly(methyl methacrylate)/Multiwall Carbon Nanotube Composites

Langmuir ◽  
2013 ◽  
Vol 29 (51) ◽  
pp. 15822-15830 ◽  
Author(s):  
A. Douglas Winter ◽  
Eduardo Larios ◽  
Faisal M. Alamgir ◽  
Cherno Jaye ◽  
Daniel Fischer ◽  
...  
Keyword(s):  
Fine Structure ◽  
Carbon Nanotube ◽  
Methyl Methacrylate ◽  
Multiwall Carbon Nanotube ◽  
X Ray ◽  
Absorption Fine ◽  
Nanotube Composites ◽  
Carbon Nanotube Composites ◽  
X Ray Absorption ◽  
Multiwall Carbon

scholarly journals Photo-catalytic dye degradation of methylene blue by using ZrO2/MWCNT nanocomposites

2021 ◽  
Author(s):  
Akshatha Gangadhar ◽  
Abhilash Mavinakere Ramesh ◽  
Jagadish Krishnegowda ◽  
Srikantaswamy Shivanna
Keyword(s):  
Methylene Blue ◽  
Carbon Nanotube ◽  
Photoelectron Spectroscopy ◽  
Zirconium Oxide ◽  
Dye Degradation ◽  
Irradiation Time ◽  
Synthesis Method ◽  
Multiwall Carbon Nanotube ◽  
X Ray ◽  
Multiwall Carbon

Abstract Photocatalytic degradation of the dyes was deliberated by altering the catalyst and dye concentrations. The Zirconium oxide/Multiwall carbon nanotube (ZrO2/MWCNT) catalyst was facilely synthesized by a hydrothermal synthesis method. The nanocomposite ZrO2/MWCNT was formed in hydrothermal condition 95 °C of low growth temperature. The physico-chemical properties were successfully characterized using X-ray diffraction, (XRD) Scanning Electron Microscope (SEM), Energy dispersive Spectroscopy (EDS), Dynamic light scattering (DLS) analysis, X-ray photoelectron spectroscopy (XPS). The presence of Orbicular shaped ZrO2 nanocrystallines and Multiwall carbon nanotube was characterized by XRD pattern shows the presence of ZrO2 and MWCNT with the 2θ peaks at 19.62, 22.5 & 30.2. The thermal behavior of the ZrO2/MWCNT partials was also investigated by differential thermal analysis, and their vibrational bands were identified by infrared spectroscopy. The photo catalytic degradation of methylene blue in industrial wastewater was observed under UV light irradiation using the synthesized ZrO2/MWCNT as catalyst. The results revealed that the ZrO2/MWCNT nanoparticles exhibited high degeneration with COD and TOC reducing from 241 mg/L and 148.00 mg/L to 2.34 mg/L and 1.26 mg/L respectively with the efficiency of 90–94% over 25–60 min duration of UV irradiation time. In comparison with the pristine Zirconium Oxide and MWCNT, the composite ZrO2/MWCNT nanoparticles exhibited more efficient, the durable and stable photo-catalytic activity during experiments.

scholarly journals All-Fiber Pyro- and Piezo-electric Nanogenerator for IoT Based Self-Powered Health-Care Monitoring

2021 ◽  
Author(s):  
Biswajit Mahanty ◽  
Sujoy Kumar Ghosh ◽  
Kuntal Maity ◽  
KRITTISH ROY ◽  
Subrata Sarkar ◽  
...  
Keyword(s):  
Health Care ◽  
Carbon Nanotube ◽  
Vinylidene Fluoride ◽  
Electrospun Nanofibers ◽  
Multiwall Carbon Nanotube ◽  
Poly Vinylidene Fluoride ◽  
Self Powered ◽  
Health Care Monitoring ◽  
Multiwall Carbon ◽  
Piezo Electric

In this work, an all-fiber pyro- and piezo-electric nanogenerator (PPNG) is designed by multiwall carbon nanotube (MWCNT) doped poly(vinylidene fluoride) (PVDF) electrospun nanofibers as the active layer and interlocked conducting...

Synthesis, thermal, mechanical and rheological properties of multiwall carbon nanotube/waterborne polyurethane nanocomposite

2005 ◽  
Vol 65 (11-12) ◽  
pp. 1703-1710 ◽  
Author(s):  
Hsu-Chiang Kuan ◽  
Chen-Chi M. Ma ◽  
Wei-Ping Chang ◽  
Siu-Ming Yuen ◽  
Hsin-Ho Wu ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Rheological Properties ◽  
Waterborne Polyurethane ◽  
Multiwall Carbon Nanotube ◽  
Multiwall Carbon
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