Mechanical, thermal, and rheological properties of graphene-based polypropylene nanocomposites prepared by melt mixing

2012 ◽  
Vol 33 (5) ◽  
pp. 733-744 ◽  
Author(s):  
Mounir El Achaby ◽  
Fatima-Ezzahra Arrakhiz ◽  
Sébastien Vaudreuil ◽  
Abou el Kacem Qaiss ◽  
Mostapha Bousmina ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Melt Mixing ◽  
Polypropylene Nanocomposites

Dielectric and Thermomechanical Properties of Polypropylene/Multi-Walled Carbon Nanotubes Nanocomposites

2007 ◽  
Vol 1056 ◽  
Author(s):  
A. Kanapitsas ◽  
E. Logakis ◽  
C. Pandis ◽  
I. Zuburtikudis ◽  
P. Pissis ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Percolation Threshold ◽  
Mechanical Analysis ◽  
Thermomechanical Properties ◽  
Dielectric Relaxation Spectroscopy ◽  
Melt Mixing ◽  
Polypropylene Nanocomposites ◽  
Multi Walled Carbon Nanotubes ◽  
Permittivity Measurements ◽  
Walled Carbon Nanotubes

ABSTRACTThe purpose of this work is to examine the dielectric, electrical and thermo-mechanical properties of multi-walled carbon nanotubes (MWCNT) filled polypropylene nanocomposites formed by melt-mixing. To that aim dielectric relaxation spectroscopy (DRS) and dymamic mechanical analysis (DTMA) were employed. The results are discussed in terms of nucleating action of MWCNT and interfacial polymer-filler interactions. Special attention is paid to percolation aspects by both ac conductivity measurements for the samples which are above the percolation threshold and permittivity measurements for the samples which are below percolation threshold.

Calcium Carbonate Reinforced Polypropylene Nanocomposites: Effect of Nano-Filler Loadings on the Melt Rheological Properties

2018 ◽  
Vol 777 ◽  
pp. 168-172 ◽  
Author(s):  
Achmad Chafidz ◽  
Ajeng Y.D. Lestari ◽  
Lucky Setyaningsih ◽  
Widi Astuti ◽  
Muhammad Rizal
Keyword(s):  
Rheological Properties ◽  
Complex Viscosity ◽  
Viscosity Data ◽  
Rheological Analysis ◽  
Melt Compounding ◽  
Polypropylene Nanocomposites ◽  
Different Types ◽  
Dispersion State ◽  
Rheological Test ◽  
Fesem Micrographs

In recent years, polymer-based nanocomposites have been investigated by many researchers due to their enhanced properties. Different types of nanomaterials have been used to produce polymer nanocomposites. One of them is nano-CaCO3. In the present work, nano-CaCO3 material reinforced polypropylene (PP) nanocomposites have been fabricated by melt compounding the PP pellets and nano-CaCO3 masterbatch. The effect of four different loadings of nano-CaCO3 (0, 5, 10, 15 wt%) on the melt rheological properties of the nanocomposites has been investigated. The morphology of the nanocomposites was analyzed by a Field Emission Scanning Electron Microscopy (FESEM) to study the dispersion state and distribution of nanoCaCO3 particles in PP matrix. Whereas, the melt rheological behavior of the nanocomposites was analyzed by an oscillatory rheometer. The FESEM micrographs showed that the nano-CaCO3 particles were well dispersed and distributed in the PP matrix. Additionally, the melt rheological analysis results showed that the complex viscosity of all nanocomposites samples were higher than that of neat PP and increased with increasing nano-CaCO3 loadings. Furthermore, the complex viscosity data from the rheological test has been fitted by Carreau-Yasuda equation and it was found to be well fitted.

The role of multiwall carbon nanotubes on physical, mechanical and rheological properties of poly(lactic acid)/natural rubber/CNT hybrid systems

2020 ◽  
pp. 096739112093135
Author(s):  
Mohammad Mahdi Salehi ◽  
Fatemeh Hakkak
Keyword(s):  
Lactic Acid ◽  
Natural Rubber ◽  
Rheological Properties ◽  
Droplet Size ◽  
Multiwall Carbon Nanotubes ◽  
Droplet Size Distribution ◽  
Hybrid Nanocomposites ◽  
Poly Lactic Acid ◽  
Melt Mixing

The main objective of the present work was to study the role of carbon nanotube (CNT) on the microstructure development and physical, mechanical, and rheological properties of poly(lactic acid) (PLA)/natural rubber (NR)/CNT hybrid nanocomposites. The PLA/NR blend samples with constant blend ratio (90/10) were prepared by melt mixing in a laboratory internal mixer at a temperature of 190°C. The behavior of the PLA/NR blend was examined depending on the CNT content (0.5–6 wt%). The droplet size and droplet size distribution of the NR phase decreases with the increase in CNTs content. This could be explained in terms of compatibilizing effect of CNT and the changing of the viscosity ratio of the blend phases. The development of the microstructure and the physical properties of the blend were also investigated according to the CNT contents by measuring the linear viscoelasticity. The elongational behavior and mechanical properties of the blends were strongly dependent on the location of the CNT. The CNT worked as an efficient compatibilizer and also it worked as a reinforcing filler making the matrix more rigid.

Rheological Properties and Extrusion Performance Evaluation of Silica Filled Epoxidized Natural Rubber (ENR) Compounds as Compared to Natural Rubber/Butadiene Rubber (NR/BR) Compound

2016 ◽  
Vol 1133 ◽  
pp. 236-240
Author(s):  
Teku Zakwan Zaeimoedin ◽  
Mazlina Mustafa Kamal ◽  
Ahmad Kifli Che Aziz
Keyword(s):  
Performance Evaluation ◽  
Shear Rate ◽  
Natural Rubber ◽  
Rheological Properties ◽  
Shear Viscosity ◽  
Rheological Behaviour ◽  
Butadiene Rubber ◽  
Melt Mixing ◽  
Lower Shear ◽  
Internal Mixer

In tyre industries, rheological and processability properties of rubber and polymer are great of importance since there are alot extrusion processes involved in the tyre manufacturing other than calendaring and moulding processes. Uniformity and consistency in the flow behaviour and processability of rubber are essential in providing the solution to the rubber industries in order to improve productivity, products quality and energy conservation. In this works, effects of silane coupling agent on rheological behaviour and extrusion performance of silica filled ENR tread compounds were studied and compared to NR/BR tread compound. The compounds were prepared by melt mixing in tangential internal mixer, while the rheological properties of compounds were determined by Capillary Rheometer, Cure Rheometer and Mooney viscometer. The compound were further examined for its extrudability performance evaluation by extruded the rubber through 30mm cold feed extruder machine using ASTM Extrusion Die, ‘Garvey’ type. Results showed that, ENR/silica compounds exhibit higher shear viscosity curves as compared to NR/BR compound at low shear rate regime. However an opposite trend was observed towards high shear rate regime tested which ENR/silica compounds gave slightly lower shear viscosity curve compared to NR/BR compound. As for extrudability performance evaluation, NR/BR compound gave better extrusion characteristics and appearance as compared to ENR/silica compounds.

Tensile Properties of Clay/Polypropylene Nanocomposites at Cryogenic Temperature

2012 ◽  
Vol 488-489 ◽  
pp. 562-566
Author(s):  
S. Mohammad Reza Khalili ◽  
Neda Soleimani ◽  
Reza Eslami Farsani ◽  
Ziba Hedayatnasab
Keyword(s):  
Tensile Strength ◽  
Maleic Anhydride ◽  
Tensile Properties ◽  
Cryogenic Temperature ◽  
Room Temperature ◽  
Melt Mixing ◽  
Clay Particles ◽  
Polypropylene Nanocomposites ◽  
Pp Composites ◽  
Compatibilizing Agent

In this paper, the polypropylene (PP)nanocomposites containing 1, 3 and 5 wt % of nanoclay particles are prepared via direct melt mixing in the presence of maleic anhydride grafted PP (PP-g-MA) as compatibilizing agent. PP-g-MA is known to facilitate the dispersion of clay particles in a nonpolar PP matrix and to increase the adhesion between PP and the clay particles.The effect of different nanoclay contents on the PP composites are investigated for tensile characterization at both room temperature(RT) and cryogenic temperature (CT).The results showed that the cryogenic tensile strength, Young’s modulus, percentage of displacement at break and the energy absorptionat cryogenic temperature are all enhanced ascompared to the neat PP by the addition of clay at appropriate contents

Development of waste tire‐derived graphene reinforced polypropylene nanocomposites with controlled polymer grade, crystallization and mechanical characteristics via melt‐mixing

2020 ◽  
Vol 69 (9) ◽  
pp. 771-779
Author(s):  
Jamal Seyyed Monfared Zanjani ◽  
Leila Haghighi Poudeh ◽  
Burcu Girginer Ozunlu ◽  
Yavuz Emre Yagci ◽  
Yusuf Menceloglu ◽  
...  
Keyword(s):  
Mechanical Characteristics ◽  
Melt Mixing ◽  
Waste Tire ◽  
Polypropylene Nanocomposites

scholarly journals Effects of chitin nanowhiskers on the thermal, barrier, mechanical, and rheological properties of polypropylene nanocomposites

RSC Advances ◽  
2016 ◽  
Vol 6 (76) ◽  
pp. 72086-72095 ◽  
Author(s):  
Sharon Chi-Yan Li ◽  
Yu-Chen Sun ◽  
Qi Guan ◽  
Hani Naguib
Keyword(s):  
Mechanical Properties ◽  
Rheological Properties ◽  
Thermal Barrier ◽  
Water Barrier ◽  
Chitin Nanowhiskers ◽  
Polypropylene Nanocomposites

Incorporation of chitin nanowhiskers into polypropylene shows improvements in both water barrier and mechanical properties.

Spherulitic Morphology and Thermal Stability of PP/ZnO Nanocomposites

2003 ◽  
Vol 788 ◽  
Author(s):  
Sandeep Razdan ◽  
Prabir Patra ◽  
Yong Kim ◽  
Steve Warner
Keyword(s):  
Thermal Stability ◽  
Zinc Oxide ◽  
Decomposition Temperature ◽  
Mixing Process ◽  
Melt Mixing ◽  
Temperature Decomposition ◽  
Polypropylene Nanocomposites ◽  
Induced Changes ◽  
Thermal Stability Of ◽  
Control Samples

ABSTRACTPolypropylene nanocomposites were prepared using zinc oxide as the filler by melt mixing process. Nanocomposites were also prepared using maleic anhydride grafted polypropylene and methylated-zinc oxide using the same method. The samples were analyzed for observing changes in morphology and thermal stability using various characterizing instruments. The results showed that zinc oxide induced changes in the morphology and thermal stability of polypropylene, though by varying amounts depending on the type of nanocomposite prepared. The nanocomposites prepared from g-PP and methylated zinc oxide showed significant changes in crystallization temperature, decomposition temperature and residue formed upon decomposition, as compared to the rest of the composites or control samples. This was attributed to higher degree of interaction existing at the interphase between the organic and inorganic phases for these nanocomposites.

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