Methyl Methacrylate Nanocomposites Research Articles

Study of the properties of MgO/Poly methyl methacrylate Nano-composites

Nanotechnology applications have recently developed in the field of smart sensors that convert energy from one form to another. Nanotechnology is one important source to renewable energy applications, such as the use of solar energy to generate electrical energy A concentration of 0.2 w/v of poly methyl meta acrylic dissolved in dimethylformamide was prepared using hot plate magnetic stirrer magnetic with a temperature up to 50 ° C, and the mixing continued for an hour. 0.02 Percentage of magnesium oxide nanoparticles was added to (poly methyl methacrylate/dimethylformamide) solution and dispersed by ultrasonic dispersion device. The samples were cast into glass containers to obtain thin films with 0.02 mm diameter after drying for 24 hours.Infrared assays were conducted to study the interactions between the polymer and the nanoparticles via studying the nature of the bonds. The differential scanning calorimetry test was performed to measure the thermal properties of the samples. Atomic force microscopy was used to study the surface properties of the samples. The energy gap of samples was calculated. The results proved that the interaction between polymer and nanoparticles is physical interaction. The differential thermal calorimeter results also showed that the adding of MgO nanoparticles leads to increase the glass transition temperature by a small value from (80 °C) to (82 °C). On the other hand, the softening point decreases from (132 ° C) to (120 ° C) and melting point decreases from (173 ° C) to (135 ° C) after adding nanoparticles.As for the results of atomic force microscopy, it was proved that the surface roughness decreases from (2.08 nm) to (1.7 nm) after adding nanoparticles, while the bearing index increases from (0.369) to (0.582). Also, the results of the energy gap proved that the addition of nanoparticles leads to decrease in the energy gap from (4.3 – 4.1) eV, which leads to increase in electrical sensitivity.

Investigation of Mechanical and Optical Properties of Aligned Carbon Nanotube/Poly Methyl Methacrylate Nano Composites

Investigation of Mechanical and Optical Properties of Aligned Carbon Nanotube/Poly Methyl Methacrylate Nano Composites

Improving the Mechanical Properties of Poly Methyl Methacrylate Nanocomposites for Dentistry Applications Reinforced with Different Nanoparticles

ABSTRACTProperties of poly methyl methacrylate are improved using different nanoparticles for denture applications and the best combination is selected using multi-criteria decision-making methods. For these purposes, poly methyl methacrylate is melt compounded with TiO2, SiO2, and Al2O3 nanoparticles and then injection molded. The results of mechanical tests revealed that by addition of TiO2 and SiO2, the impact strengths of poly methyl methacrylate were increased 229 and 62%, respectively. Also, the results indicated a significant improvement in Young’s modulus and hardness. The implementation of multi-criteria decision-making methods illustrated that TiO2 nanoparticles are the best candidate for improving the properties of poly methyl methacrylate for dental applications.

Low-weight Impact Behaviour of Carbon Fibre Reinforced Methyl Methacrylate Nanocomposites

Inthis study, the carbon fibre reinforced methyl methacrylate (CF/MMA) compositetoecap for safety shoes was manufactured to increase the energy absorptioncapacity during impact. Different types of nanofillers such as organic andinorganic nanotubes, unmodified and organically modified nanoclays were appliedto modify matrix impact properties. The drop-weight impact tests of thenanocomposite toecap were performed with respect to nanofiller nature andcarbon fibre stacking sequence. It was found that the most influence on thestiffness and impact damage of the carbon fibre methyl methacrylatenanocomposite toecaps besides stacking sequence show organic and inorganic nanotubesor unmodified nanoclay. DOI: http://dx.doi.org/10.5755/j01.ms.21.2.7075

Effect of carbon nanotubes on laser cutting of multi-walled carbon nanotubes/poly methyl methacrylate nanocomposites

This paper studies the effect of carbon nanotubes on laser cutting of injection molded multi-walled carbon nanotubes/poly methyl methacrylate (MWCNT/PMMA) composite. Also the effect of processing parameters on laser cutting of MWCNT/PMMA nanocomposites is investigated in this study. Design of experiments is performed using full factorial method. Variable input factors are considered as MWCNT wt% in four levels, laser power in three levels and feed rate in three levels. Output parameters of this study are heat affected zone (HAZ), the average kerf width, and the taper kerf of the samples. Continuous wave CO2 laser is used in the cutting process of the samples. Output parameters are studied in direction perpendicular to the flow direction. Experiments analysis is performed using analysis of variance method. Regarding the HAZ, results show that the most effective parameters are feed rate and the amount of the carbon nanotubes. High available carbon nanotube percentage causes approximately 50% decrease in the HAZ. Findings also clearly show that average kerf width is influenced by the three variable input factors. The tapering kerf of the samples is also significantly depended on the percentage of the carbon nanotube.

Molecular Dynamic Simulation of Graphene-Poly Methyl Methacrylate Nano-Composite

Molecular Dynamic Simulation of Graphene-Poly Methyl Methacrylate Nano-Composite

Synthesis of biomaterial thin films by pulsed laser technologies: Electrochemical evaluation of bioactive glass-based nanocomposite coatings for biomedical applications

The surface of biomedical titanium implants has been covered with thin films of bioactive glass and bioactive glass+poly(methyl methacrylate nanocomposite) in order to increase the resistance to corrosion and improve the bioactivity of their area in contact with bone tissue. To this purpose Pulsed Laser Deposition and Matrix Assisted Pulsed Laser Evaporation with an excimer laser source have been applied.The layer assessments under conditions that simulate their biological interaction with the human body fluids and resistance to degradation have been studied by electrochemical polarization and electrochemical impedance spectroscopy. The poly(methyl methacrylate) addition to bioglass has reduced the bone ability to bond but resulted in a significant increase of the shielding efficiency against corrosion of the applied coatings.The obtained results support the application of bioactive glass and composite bioactive glass+poly(methyl methacrylate) coatings for the development of advanced highly stable implants and prostheses that cannot be affected by corrosion.

Effect of solvent nature in casting‐based carbon nanofiber/poly(methyl‐methacrylate) nanocomposites

AbstractEight different solvents, of different polarities, were used to prepare carbon nanofiber (CNF)/poly(methyl methacrylate nanocomposites by solvent casting. Selected solvents ranged from organic acetone to nonpolar toluene, passing through N‐containing solvents. In addition, pristine and oxygen and nitrogen‐functionalized CNFs were used. Two objectives were pursued: (1) the role of the solvent in the dispersion of the CNFs and (2) the benefit of the functionalization on the dispersion through the stability in the solvent and compatibility with the matrix. The dispersion analysis of the materials leads to the conclusion that solvents containing oxygen groups work better with the oxidized CNFs, similarly solvents containing nitrogen groups with the nitrogen‐functionalized CNFs. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

Study on the thermal stability of polystyryl surfactants and their modified clay nanocomposites

Five oligomeric styrene surfactants, N,N,N-trimethylpolystyrylammonium, N,N-dimethyl-N-benzylpolystyrylammonium, N,N-dimethyl-N-hexadecylpolystyrylammonium, 1,2-dimethyl-3-polystyrylimidazolium, and triphenylpolystyrylphosphonium chlorides were synthesized and used to prepare organically modified clays. Both styrene and methyl methacrylate nanocomposites were prepared by melt blending and the type of nanocomposite was evaluated by X-ray diffraction and transmission electron microscopy. The thermal stability of the organically modified clays and the nanocomposites were studied by thermogravimetric analysis; these systems do give clays which have good thermal stability and may be useful for melt blending with polymers that must be processed at higher temperatures.

Study on the thermal stability of polystyryl surfactants and their modified clay nanocomposites

Five oligomeric styrene surfactants, N, N, N-trimethylpolystyrylammonium, N, N-dimethyl- N-benzylpolystyrylammonium, N, N-dimethyl- N-hexadecylpolystyrylammonium, 1,2-dimethyl-3-polystyrylimidazolium, and triphenylpolystyrylphosphonium chlorides were synthesized and used to prepare organically modified clays. Both styrene and methyl methacrylate nanocomposites were prepared by melt blending and the type of nanocomposite was evaluated by X-ray diffraction and transmission electron microscopy. The thermal stability of the organically modified clays and the nanocomposites were studied by thermogravimetric analysis; these systems do give clays which have good thermal stability and may be useful for melt blending with polymers that must be processed at higher temperatures.