scholarly journals Effect of Filler Dimensionality on Mechanical Properties of Nanofiller Reinforced Polyolefin Elastomers

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Sharmila Pradhan ◽  
Ralf Lach ◽  
Hong Hai Le ◽  
Wolfgang Grellmann ◽  
Hans-Joachim Radusch ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polymer Nanocomposites ◽  
Tensile Testing ◽  
Layered Silicate ◽  
Scanning Calorimetry ◽  
Multiwalled Carbon ◽  
Reinforcing Effect ◽  
Microindentation Hardness ◽  
The Matrix ◽  
Morphology And Mechanical Properties

The object of this study has been to investigate the effect of filler dimensionality on morphology and mechanical properties of polymer nanocomposites using various kinds of nanofillers (such as multiwalled carbon nanotubes (1D filler), layered silicate (2D filler), and boehmite (3D filler)) dispersed in the matrix of ethylene-1-octene copolymer (EOC), a polyolefin-based elastomer. The morphological features were studied by scanning electron microscopy (SEM) and differential scanning calorimetry (DSC) while mechanical properties were characterized by tensile testing and depth sensitive recording microindentation hardness measurements. It has been demonstrated that the filler dimensionality may have dramatic influence on the mechanical properties of the samples. Based on the results obtained by tensile testing and microhardness measurements, the reinforcing effect of the nanofiller was found to follow the order: 1D filler > 2D filler > 3D filler.

scholarly journals Nanofiller Reinforced Polyolefin Elastomer: Effect on Morphology and Mechanical Properties of Composites

2013 ◽  
Vol 13 (2) ◽  
pp. 103-108 ◽  
Author(s):  
Sharmila Pradhan ◽  
Ralf Lach ◽  
Wolfgang Grellmann ◽  
Rameshwar Adhikari
Keyword(s):  
Mechanical Properties ◽  
Layered Silicate ◽  
Reinforcing Effect ◽  
Boehmite Nanoparticles ◽  
Polyolefin Elastomer ◽  
Different Types ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Morphology And Mechanical Properties ◽  
Properties Of Composites

The effect of different types of fillers on morphology and mechanical properties of polymer nanocomposites has been investigated using ethylene-1–octene copolymer (EOC), a polyolefin based elastomer, as matrix and various nanofillers {such as multi-walled carbon nanotubes (MWCNT), layered silicate (LS) and boehmite (OS2)}. The morphological structures were studied by scanning electron microscopy (SEM) while the mechanical properties were characterized by tensile testing and microindentation hardness measurements. It has been shown that the nature of the nanofiller may have significant influence on the mechanical properties of the samples. Among the nanocomposites studied so far, the MWCNT filled samples showed the highest reinforcing effect followed by layered silicate. The least reinforcing effect was obtained for the samples filled with boehmite nanoparticles. Nepal Journal of Science and Technology Vol. 13, No. 2 (2012) 103-108 DOI: http://dx.doi.org/10.3126/njst.v13i2.7721

STRAIN-INDUCED CRYSTALLIZATION AND MECHANICAL PROPERTIES OF NBR COMPOSITES WITH CARBON NANOTUBE AND CARBON BLACK

2012 ◽  
Vol 85 (2) ◽  
pp. 207-218 ◽  
Author(s):  
Sang-Ryeoul Ryu ◽  
Jong-Whan Sung ◽  
Dong-Joo Lee
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Carbon Nanotube ◽  
Carbon Black ◽  
Scanning Calorimetry ◽  
Multiwalled Carbon ◽  
Extension Ratio ◽  
The Matrix ◽  
Strain Induced Crystallization ◽  
Induced Crystallization

Abstract The mechanical properties and strain-induced crystallization (SIC) of elastomeric composites were investigated as functions of the extension ratio (λ), multiwalled carbon nanotube (CNT) content, and carbon black (CB) content. The tensile strength and modulus gradually increase with increasing CNT content when compared with the matrix and the filled rubbers with same amount of CB. Both properties of rubber with CB and CNT show the magnitude of each CNT and CB component following the Pythagorean Theorem. The ratio of tensile modulus is much higher than that of tensile strength because of the CNT shape/orientation and an imperfect adhesion between CNT and rubber. The tensile strength and modulus of the composite with a CNT content of 9 phr increases up to 31% and 91%, respectively, compared with the matrix. Differential scanning calorimetry (DSC) analysis reveals that the degree of SIC increases with an increase in CNT content. Mechanical properties have a linear relation with the latent heat of crystallization (LHc), depending on the CNT content. As the extension ratio increases, the glass-transition temperature (Tg) of the composite increases for CB- and CNT-reinforced cases. However, the LHc has a maximum of λ = 1.5 for the CNT-reinforced case, which relates to a CNT shape and an imperfect adhesion with rubber. Based on these results, the reinforcing mechanisms of CNT and CB are discussed.

scholarly journals Investigations into Morphology and Mechanical Properties of Epoxidized Polystyrene/Polybutadiene/Polystyrene (SBS) Triblock Copolymer

2013 ◽  
Vol 28 ◽  
pp. 42-47 ◽  
Author(s):  
Rajesh Pandit ◽  
Boulos Youssef ◽  
Jean Marc Saiter ◽  
Rameshwar Adhikari
Keyword(s):  
Mechanical Properties ◽  
Tensile Testing ◽  
Triblock Copolymer ◽  
Microphase Separation ◽  
Chemical Society ◽  
Performic Acid ◽  
Scanning Calorimetry ◽  
Lamellar Morphology ◽  
Morphology And Mechanical Properties

An architecturally asymmetric polystyrene-block-polybutadiene-block-polystyrene (SBS) triblock copolymer possessing lamellar morphology was subjected to different degrees of epoxidation with performic acid generated in situ by the reaction between hydrogen peroxide and formic acid. The effect of the chemical modification on morphology and mechanical behaviour of the block copolymer was investigated by means of different techniques such as electron microscopy, Fourier transform Infrared (FTIR) spectroscopy, tensile testing and differential scanning calorimetry (DSC). It was found that the microphase separation behaviour and hence the mechanical properties of the materials can be drastically altered via epoxidation of the diene block of the styrene/diene triblock copolymers. DOI: http://dx.doi.org/10.3126/jncs.v28i0.8057 Journal of Nepal Chemical Society Vol.28, 2011 Page 42-47 Uploaded date: May 7, 2013

scholarly journals Effect of Ketuki Fiber on Morphology and Mechanical Properties of Thermoplastics Composites

2013 ◽  
Vol 13 (1) ◽  
pp. 73-79 ◽  
Author(s):  
Jyoti Giri ◽  
Hong Hai Le ◽  
Hans-Joachim Radusch ◽  
Ralf Lach ◽  
Wolfgang Grellmann ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Tensile Testing ◽  
Matrix Material ◽  
Average Diameter ◽  
Melt Mixing ◽  
The Matrix ◽  
Thermal Stability Of ◽  
Tga Analysis ◽  
Morphology And Mechanical Properties

Different amount of raw Ketuki powder (average diameter: 60 – 120 ?m) was mixed with the thermoplastic polymers such as ethylene-1–octene copolymer (EOC) and isotactic polypropylene (iPP). The melt mixing was performed using an internal mixture and resulting composites were studied for the effect on morphology and mechanical behavior using electron microscopy, tensile testing and thermogravimetric analysis (TGA). The microscopic results showed that the polymer matrix is not compatible with filler resulting in worsening of mechanical properties especially in case of the iPP-based composites. For the EOC composites the rubbery nature of the matrix material remains still visible. The TGA analysis revealed slightly worsened thermal stability of composites, while tensile properties were found to be deteriorated as well. Nepal Journal of Science and Technology Vol. 13, No. 1 (2012) 73-79 DOI: http://dx.doi.org/10.3126/njst.v13i1.7444

The Effect of Various Nanoclay Surface Modifications on the Thermal and Mechanical Properties of Amorphous Polyamide Nanocomposites

2020 ◽  
Vol 1010 ◽  
pp. 154-159
Author(s):  
K.A. Abdul Halim ◽  
James E. Kennedy ◽  
Joseph B. Farrell ◽  
Muhammad Salihin Zakaria
Keyword(s):  
Mechanical Properties ◽  
Thermal Analysis ◽  
Polymer Nanocomposites ◽  
Polymer Matrix ◽  
Tensile Testing ◽  
Polymer System ◽  
Surface Modifications ◽  
Mechanical Analysis ◽  
Thermal And Mechanical Properties ◽  
Scanning Calorimetry

The addition of nanoclay within polymer matrix is anticipate to enhance the properties of the polymer system. Nonetheless, one of the key elements in property enhancements of a polymer nanocomposites is the surface modifications of the nanoclay. This is due to the affinity between polymer matrix and nanoclay is of important factors should be considered. In this study, amorphous polyamide were melt blended with different nanoclay grades with different surface modifications in order to evaluate the best clay grade for the polymer system. The thermal analysis carried out on the amorphous polyamide nanocomposites were carried out by means of differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) whereas the mechanical properties were investigated using tensile testing. It was observed that there were changes in the glass transition temperature (Tg) of the nanocomposites due to clay additions. Further, the storage modulus was found to increase as a result of nanoclay incorporation. The type of clay grades significantly affects the mechanical properties of the amorphous polyamide nanocomposites.

Preparation and Mechanical Properties of Zein/PVA Nanofibrous Membranes

2012 ◽  
Vol 466-467 ◽  
pp. 391-395
Author(s):  
Feng Xia Liu ◽  
Yong Jia Liu ◽  
Hong Li Cai ◽  
Jia Shuang Luan ◽  
Mei Zhang
Keyword(s):  
Mechanical Properties ◽  
Tensile Testing ◽  
Mechanical Characterization ◽  
Scanning Calorimetry ◽  
Factors Affecting ◽  
Fibrous Membranes ◽  
Dsc Method ◽  
Morphology And Mechanical Properties ◽  
Significant Factors

This paper describes the morphology and mechanical properties of novel electrospun zein based fibrous membranes. From the results, due to adding PVA, it was found that the electrospun fibers of zein can turn into a new strong membrane. The fibrous membranes were characterized by tensile testing, scanning electron microscopy(SEM) and differential scanning calorimetry(DSC). Effect of PVA was analyzed as one of the most significant factors affecting the mechanical characterization of fibrous membranes. The compatibility of zein/PVA nanofibrous were also analyzed by using DSC method.

scholarly journals Electrodeposition of Hydroxyapatite-Multiwalled Carbon Nanotube Nanocomposite on Ti6Al4V

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Thom T. Nguyen ◽  
Nam T. Pham ◽  
Thanh T. M. Dinh ◽  
Thu T. Vu ◽  
Hai S. Nguyen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotube ◽  
Multiwalled Carbon Nanotube ◽  
Optimal Conditions ◽  
Electrodeposition Technique ◽  
Multiwalled Carbon ◽  
Structural Behaviors ◽  
Morphology And Mechanical Properties

This work aims to study the optimal conditions to synthesize hydroxyapatite-multiwalled carbon nanotube (HAp-MWCNT) coatings on Ti6Al4V by electrodeposition technique. The structural behaviors, morphology, and mechanical properties of the coatings were characterized by various advanced methods. The analyzed results showed that the obtained coatings were composed of hydroxyapatite (HAp) and multiwalled carbon nanotube (MWCNT) phases. The presence of MWCNTs in the HAp-MWCNT composite, which improved adhesion between the coatings and the substrate about 2.3 times, increased 20% of hardness and decreased about 40% the solubility of HAp-MWCNTs/Ti6Al4V in comparison with pure HAp coating on Ti6Al4V.

scholarly journals Effect of Increasing the Strength of Aluminum Matrix Nanocomposites Reinforced with Microadditions of Multiwalled Carbon Nanotubes Coated with TiC Nanoparticles

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1596 ◽  
Author(s):  
Artemiy Aborkin ◽  
Kirill Khorkov ◽  
Evgeny Prusov ◽  
Anatoly Ob’edkov ◽  
Kirill Kremlev ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Aluminum Matrix ◽  
High Energy ◽  
High Tech ◽  
Multiwalled Carbon ◽  
The Matrix ◽  
Tic Nanoparticles ◽  
Matrix Nanocomposites

Aluminum matrix composites reinforced with multiwalled carbon nanotubes (MWCNTs) are promising materials for applications in various high-tech industries. Control over the processes of interfacial interaction in Al/MWCNT composites is important to achieve a high level of mechanical properties. The present study describes the effects of coating MWCNTs with titanium carbide nanoparticles on the formation of mechanical properties and the evolution of the reinforcement structure in bulk aluminum matrix nanocomposites with low concentrations of MWCNTs under conditions of solid-phase consolidation of ball-milled powder mixtures. Using high-energy ball milling and uniaxial hot pressing, two types of bulk nanocomposites based on aluminum alloy AA5049 that were reinforced with microadditions of MWCNTs and MWCNTs coated with TiC nanoparticles were successfully produced. The microstructural and mechanical properties of the Al/MWCNT composites were investigated. The results showed that, on the one hand, the TiC nanoparticles on the surface of the MWCNT hybrid reinforcement reduced the damage of reinforcement under the intense exposure of milling bodies, and on the other hand, they reduced the contact area of the MWCNTs with the matrix material (acting as a barrier interface), which also locally inhibited the reaction between the matrix and the MWCNTs.

Influence of Injection Conditions on the Mechanical Property of MWCNTs/ PC Nanocomposites

2014 ◽  
Vol 983 ◽  
pp. 94-98 ◽  
Author(s):  
Li Jun Wang ◽  
Jian Hui Qiu ◽  
Eiichi Sakai
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Mechanical Property ◽  
Bending Strength ◽  
Surface Hardness ◽  
Interfacial Interaction ◽  
Multiwalled Carbon ◽  
The Matrix ◽  
The Impact ◽  
Scanning Electron

The melting mixing was applied in the preparation of Multiwalled carbon nanotubes/Polycarbonate (MWCNTs/PC) nanocomposites. MWCNTs/PC nanocomposites with different MWCNTs contents were prepared under different injection conditions. The mechanical property of nanocomposites was comparatively investigated. The results demonstrated that: the tensile property of the nanocomposites was slightly improved by MWCNTs content increasing; but as the MWCNTs contents went on to increase to 10wt%, the tensile strength and bending strength were obviously decreased about 35% and 47%, respectively, but the impact strength and hardness were increased. The center hardness of MWCNTs/PC nanocomposites was greater than the surface hardness. Besides, the changes on the mechanical properties of the nanocomposites were studies by changing the injection conditions. By Scanning Electron Microscopy (SEM) observation, the microstructure and morphology of nanocomposites were analyzed, revealing that the center of the nanocomposite distributed more MWNTs, and the injection conditions would affect the MWNTs’ dispersion in the matrix and the interfacial interaction between MWCNTs and PC.

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