Characterization of Polyvinyl Acetate/Multi Walled Carbon Nanotube Nanocomposites

2016 ◽  
Vol 721 ◽  
pp. 13-17
Author(s):  
Juris Bitenieks ◽  
Remo Merijs Meri ◽  
Janis Zicans ◽  
Mārtiņš Kalniņš
Keyword(s):  
Polyvinyl Acetate ◽  
Nanocomposite Films ◽  
Solution Casting ◽  
Casting Technique ◽  
Multi Walled Carbon Nanotube ◽  
Multi Walled Carbon Nanotubes ◽  
Solution Casting Technique ◽  
Dielectrical Properties ◽  
Walled Carbon Nanotubes

Nanocomposite films from polyvinyl acetate (PVAc) dispersion and multi walled carbon nanotubes (MWCNTs) were prepared by solution casting technique. Stress-strain properties showed increase in elastic modulus and yield strength. Mechanical properties characterized by dynamic mechanical thermal analysis represented increase in storage modulus below glass transition temperature. Studied dielectrical properties of PVAc/MWCNT nanocomposites revealed formation of conductive MWCNT network in PVAc matrix.

Fabrication and Morphological Characterization of Barium Titanate-Based Polymeric Nanocomposite Thin Films

2018 ◽  
pp. 50-59 ◽  
Author(s):  
Sudhanshu Singh ◽  
Umesh Kumar Dwivedi
Keyword(s):  
Barium Titanate ◽  
Room Temperature ◽  
Composite Films ◽  
Morphological Characterization ◽  
Solution Casting ◽  
Weight Percentage ◽  
Casting Technique ◽  
Nanocomposite Thin Films ◽  
Solution Casting Technique

In this critical review chapter, the authors explain the development of composite films of Barium Titanate (BaTiO3) and Poly (methyl methacrylate) prepared by solution casting technique. Different weight percentage composition of BaTiO3 has been selected to find out the best optimization condition for further investigation and correlate the results. The structural properties have been carried out at room temperature using XRD. Efforts have been made to correlate the results with investigated XRD results of pure BaTiO3 and its composites as observed by other workers at room temperature. The flow of experimental work and microscopic images are explained.

Surface, Temperature and Optical Properties Pd-TiO2 Doped PVA Nanocomposite

2019 ◽  
Vol 962 ◽  
pp. 77-81
Author(s):  
B. Guruswamy ◽  
V. Ravindrachary ◽  
C. Shruthi ◽  
M. Mylarappa ◽  
G.O. Obaiah
Keyword(s):  
Optical Properties ◽  
Thermal Properties ◽  
Nanocomposite Films ◽  
Solution Casting ◽  
Absorption Method ◽  
Casting Technique ◽  
Solution Casting Technique ◽  
Modified Surface ◽  
Uv Visible ◽  
Effect Of Pd

The effect of Pd-TiO2 nanoparticle doping on structural, optical and thermal properties of the PVA polymer has been investigated using FTIR, UV-Visible, TGA and FESEM analysis. nanosized Pd-TiO2 particles were synthesized using standard method. Pure and Pd-TiO2/PVA nanocomposite films were prepared using solution casting technique. The FTIR study confirmed that the Pd-TiO2 nanoparticles interacts with the OH group of PVA polymer and forms the complex. The presence of these complexes affects the optical and thermal properties the composite. The change in the optical properties was studied using UV-Vis absorption method. The effect of doping on the thermal properties was studied using TGA method and the modified surface morphology using FESEM.

Preparation and characterization of porous PVdF-HFP/graphene oxide composite membranes by solution casting technique

2019 ◽  
Vol 30 (22) ◽  
pp. 20079-20087 ◽  
Author(s):  
Pavithra Shanmugaraj ◽  
Ashwini Swaminathan ◽  
Ranjith Kumar Ravi ◽  
Mahadevaiah Dasaiah ◽  
P. Senthil Kumar ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Composite Membranes ◽  
Solution Casting ◽  
Casting Technique ◽  
Oxide Composite ◽  
Solution Casting Technique

scholarly journals Fabrication and Characterization of Graphene/Epoxy Nanocomposites

2019 ◽  
Vol 25 (4) ◽  
pp. 433-440
Author(s):  
Shiuh Chuan HER ◽  
Lei Yao CHEN
Keyword(s):  
Thermal Properties ◽  
Experimental Results ◽  
Mechanical And Thermal Properties ◽  
Epoxy Nanocomposites ◽  
Sem Images ◽  
Multi Walled Carbon Nanotube ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Thermal Stability Of

Graphene with high electric and thermal conductivities has been widely used as reinforced filler. In this study, graphene loadings in the range between 0.3 and 1.0 wt.% were added to the epoxy to fabricate the nanocomposites. The mechanical and thermal properties of nanocomposites were characterized using tensile test and differential scanning calorimeter (DSC), respectively. Experimental results show that the elastic modulus, yield strength, ultimate strength and glass transition temperature of the graphene reinforced epoxy are increasing with the increase of the graphene, while the fracture strain and toughness are decreasing with the increase of the graphene. Scanning electron microscope (SEM) was employed to investigate the dispersion and separation of graphene in the epoxy based matrix. The SEM images depict that graphene is well dispersed resulting in a significant improvement of the mechanical and thermal properties of the nanocomposites. The mechanical properties and thermal stability of epoxy nanocomposites with graphenes and multi-walled carbon nanotubes additives were then compared. Experimental results show that nanocomposite with graphene additives outperform the multi-walled carbon nanotube additives.

High-k dielectric percolative nanocomposites based on multiwalled carbon nanotubes and polyvinyl chloride

2018 ◽  
Vol 6 (30) ◽  
pp. 8152-8159 ◽  
Author(s):  
Elizabeth Francis ◽  
Hyun U Ko ◽  
Jung Woong Kim ◽  
Hyun Chan Kim ◽  
Nandakumar Kalarikkal ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Polyvinyl Chloride ◽  
Multiwalled Carbon ◽  
Casting Technique ◽  
Common Solution ◽  
High K ◽  
Multi Walled Carbon Nanotubes ◽  
Solution Casting Technique ◽  
High K Dielectric ◽  
Walled Carbon Nanotubes

This work reports high-k dielectric nanocomposites made with multi-walled carbon nanotubes/polyvinyl chloride (MWCNTs/PVC) using a common solution casting technique.

Preparation and Characterizations of Cassava Starch Nanocomposite Reinforced Kenaf

2012 ◽  
Vol 545 ◽  
pp. 348-352 ◽  
Author(s):  
Siti Yasmine Zanariah Zainuddin ◽  
Ishak Ahmad ◽  
Hanieh Kargarzadeh
Keyword(s):  
Mechanical Performance ◽  
Cassava Starch ◽  
Nanocomposite Films ◽  
Solution Casting ◽  
Tem Analysis ◽  
Casting Technique ◽  
Solution Casting Technique ◽  
Kenaf Fibers ◽  
Hydrolysis Of ◽  
Neat Matrix

The aim of this research is to prepare biodegradable plastics which are made from the natural materials. In this study, solution casting technique is used to prepare the cassava starch nanocomposite reinforced kenaf. Prior to that, kenaf fibers undergo alkali and bleaching treatments in order to prepare the cellulose. Nanocellulose which used as reinforcing nanoparticle in the composites was then prepared by acid hydrolysis of obtained cellulose with 65% sulphuric acid. The preparation of cassava starch biocomposites was done using the mixture of sorbitol/glycerol (1:1) with various cellulose loading (0%, 2%, 4%, 6%, 8% and 10%). Finer size of cellulose is examined from the transmissions electron microscopy (TEM) analysis with diameter of 12±3.04 nm and length of 70-190 nm recorded. As for field emission scanning electron microscope (FESEM) analysis, good dispersion and strong interaction between starch and cellulose had been observed for the nanocomposite films. These contribute for enhancement in the mechanical performance which demonstrated improvement of all nanocomposite films compared to the neat matrix with 6 % cellulose composition showed the highest tensile stress value of 6.3 MPa.

Synthesis and Characterization of Carboxymethyl κ-Carrageenan for Dye-Sensitized Solar Cells Application

2012 ◽  
Vol 501 ◽  
pp. 242-246 ◽  
Author(s):  
N. N. Mobarak ◽  
Nazaruddin Ramli ◽  
Azizan Ahmad
Keyword(s):  
Ionic Conductivity ◽  
Electrochemical Impedance ◽  
Dye Sensitized Solar Cells ◽  
Solution Casting ◽  
Anionic Polymer ◽  
Casting Technique ◽  
Dye Sensitized ◽  
Solution Casting Technique ◽  
Sensitized Solar Cells

κ-Carrageenan is an anionic polymer extracted from marine red algae. In order to increase conductivity of the κ-carrageenan, carboxymethyl κ-carrageenan was synthesized by the reaction of κ-carrageenan with monochloroacetic acid. A polymer electrolyte comprising κ-carrageenan and carboxymethyl κ-carrageenan was prepared by solution-casting technique. The films were characterized by Reflection Fourier Transform Infrared spectroscopy (ATR-FTIR) to investigate the presence of the complexes. Electrochemical Impedance Spectroscopy was conducted to obtain ionic conductivity. Ionic conductivity was found to increase with the addition of carboxymethyl group on carrageenan. The conductivity achieved for κ-carrageenan and carboxymethyl κ-carrageenan were 5.34×10-7 S cm−1 and 2.02×10−4 S cm-1, respectively.

Improvement of Piezoelectric Property of Poly(Vinylidene Fluoride) Nanocomposites Using Multi-Walled Carbon Nanotubes

2013 ◽  
Vol 392 ◽  
pp. 57-61
Author(s):  
Bin Hu ◽  
Liang Ke Wu ◽  
Hui Ming Ning ◽  
Ning Hu
Keyword(s):  
Piezoelectric Property ◽  
Vinylidene Fluoride ◽  
Nanocomposite Films ◽  
X Ray Diffraction ◽  
Multi Walled Carbon Nanotube ◽  
Poly Vinylidene Fluoride ◽  
Multi Walled Carbon Nanotubes ◽  
Solution Casting Method ◽  
Vibration Tests ◽  
Walled Carbon Nanotubes

We improved the piezoelectric property of poly (vinylidene fluoride) (PVDF) by employing multi-walled carbon nanotube (MWCNT) as nanofillers. The MWCNT/PVDF nanocomposite was prepared by the solution casting method with MWCNT contents ranging from 0.0 wt.% to 0.3 wt.%. To induce the piezoelectric β-phase crystal structure, the nanocomposite films were drawn lengthwise with a ratio of 4 ~ 5 and polarized by step-wise poling method. To evaluate the piezoelectric property, the output voltages of the nanocomposite films were measured through extensive experimental vibration tests. The experimental results show that the nanocomposite films with 0.05 wt.% MWCNT possess the highest output voltage, i.e., around 2 times as that of pure PVDF films. The main reason is that more β-crystalline phase can be formed at this content, as confirmed by X-ray diffraction.

Experimental Investigation of Morphological and Electrical Characteristics of PS/MWCNT Nanocomposite Films

2018 ◽  
Vol 915 ◽  
pp. 104-109
Author(s):  
Barış Demirbay ◽  
Şaziye Uğur
Keyword(s):  
Annealed Film ◽  
Nanocomposite Films ◽  
Electrical Characteristics ◽  
Liquid Form ◽  
Mwcnt Content ◽  
Electrical Percolation ◽  
Glass Substrates ◽  
Multi Walled Carbon Nanotubes ◽  
Electrical Percolation Threshold ◽  
Walled Carbon Nanotubes

Electrical characteristics and morphology of nanocomposite films composed of two different polystyrene (PS) latexes impregnated with multi-walled carbon nanotubes (MWCNT) in the range between 0 wt% and 20 wt% were assessed by considering photon transmission (UV-Vis) technique and electrical conductivity measurements. Emulsion polymerization technique was employed both to synthesize very fine PS particles dispersed in water and to tailor the sizes of the PS particles as 382 nm and 560 nm, respectively. PS/MWCNT nanocomposite films were obtained from the liquid form on glass substrates via drop-casting method and all they dried at 40 QUOTE C. Each dried sample was then annealed at varying temperatures between 100 QUOTE C and 250 QUOTE C for 10 min. The surface conductivity QUOTE of each annealed film at 250 QUOTE C was measured and was found to increase dramatically above a certain mass fraction of MWCNT content, QUOTE . Each set of PS/MWCNT nanocomposite film had a similar electrical percolation threshold of QUOTE =1.5 wt% as the MWCNT content and critical exponents of QUOTE were found to be 2.64 and 1.19 for 382 nm and 560 nm PS latex systems, respectively.

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