scholarly journals Characterization of PMMA Composite Dispersed Aluminum Powder Prepared by Solution-Casting to Utilize for Automobile Body Applications

2009 ◽  
Vol 21 (1/2) ◽  
pp. 31-34 ◽  
Author(s):  
Yoshihide EBIHARA ◽  
Nobuaki KUNIKYO ◽  
Ryuichi SUENAGA ◽  
Yoshitake NISHI
Author(s):  
Sudhanshu Singh ◽  
Umesh Kumar Dwivedi

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.


2006 ◽  
Vol 1 (1) ◽  
pp. 45-47
Author(s):  
Feng Xue ◽  
Weiwen Fu ◽  
Rongshi Cheng

Cerâmica ◽  
2019 ◽  
Vol 65 (373) ◽  
pp. 153-161 ◽  
Author(s):  
H. M. Khater

Abstract Production of lightweight building materials attract the attention of the scientists worldwide with the need for reducing the structure deadweight, provide better thermal insulation for buildings, and cost less to transport. The current work focused on the production of lightweight geopolymer composites by the incorporation of aluminum powder and aluminum slag in various ratios for water-cooled slag/kaolinite sand composite; the activators used were 6% of equal ratio from sodium hydroxide and sodium silicate. The properties of the produced lightweight geopolymer composites were studied by measurement of compressive strength, bulk density, water absorption, FTIR, XRD and SEM imaging. Results showed the enhancement for both physicomechanical and microstructural characteristics with using aluminum powder and aluminum slag forming lightweight composites with densities below 2.15 g/cm3 depending on the studied mix composition.


2016 ◽  
Vol 721 ◽  
pp. 13-17
Author(s):  
Juris Bitenieks ◽  
Remo Merijs Meri ◽  
Janis Zicans ◽  
Mārtiņš Kalniņš

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.


2017 ◽  
Vol 729 ◽  
pp. 68-74 ◽  
Author(s):  
Young Ho Kim ◽  
Yeon Kyung Lee ◽  
Bong Keun Kang ◽  
Hee Jin Kim ◽  
Sang June Choi

Nafion membranes were reinforced by adding functionalized carbon nanotubes (CNTs) such as oxidized CNTs (ox-CNTs). To enhance the ox-CNTs’ miscibility in the Nafion membrane, a small amount of polyvinyl alcohol (PVA) was introduced during the fabrication of some of the nanocomposite membranes. Nafion, a sulfonated tetrafluoroethylene-based fluoropolymer-copolymer, can be used as an ion-exchange membrane in various nanobio-devices. However, some physical properties of Nafion membranes, including the thermal stability, need to be enhanced by adding rigid inorganic nanomaterials such as CNTs or silicates.In this study, PVA-reinforced Nafion membranes with either pristine CNTs (p-CNTs) or ox-CNTs (Nafion/CNT/PVA) were prepared by solution casting. The prepared Nafion/CNT/PVA nanocomposite membranes were approximately 90 μm thick, and their morphologies were characterized by microscopy. Their thermal properties were investigated by differential scanning calorimetry and thermogravimetric analysis.


e-Polymers ◽  
2005 ◽  
Vol 5 (1) ◽  
Author(s):  
Jintian Yang ◽  
Wei Huang ◽  
Yongfeng Zhou ◽  
Deyue Yan ◽  
Xiaohang Wang

AbstractA series of novel aromatic copolyimides was synthesized from pyromellitic dianhydride with the commercial diamine 4,4’-methylenebisaniline (MBA) and the diamine 4,4’-methylenebis(2-tert-butylaniline) (MBTBA) specially designed by ourselves. The solubility of the copolyimides in conventional solvents decreased with the mole ratio of MBTBA to MBA. When MBTBA/MBA was larger than 8/2, the copolyimides are soluble in low boiling point solvents (such as chloroform and tetrahydrofuran) and can form a transparent, flexible, tough film by solution casting. When MBTBA/MBA was between 7/3 and 5/5, the copolyimides are only soluble in dipolar aprotic solvents (such as dimethylformamide and N-methyl-2-pyrrolidone) and form films, too. The copolyimide was precipitated in m-cresol in the polymerization process when MBTBA/MBA was lower than 5/5. The number-average molecular weights of the soluble copolyimides measured by gel permeation chromatography were larger than 5.0·104 and the polydispersity index was higher than 1.5. Only one glass transition of these copolyimides was detected at around 350°C. The copolyimides did not show appreciable decomposition up to 400°C under air and 550°C under nitrogen, and their thermal stability increased a little with the introduction of MBA into the polymer chains.


2019 ◽  
Vol 30 (22) ◽  
pp. 20079-20087 ◽  
Author(s):  
Pavithra Shanmugaraj ◽  
Ashwini Swaminathan ◽  
Ranjith Kumar Ravi ◽  
Mahadevaiah Dasaiah ◽  
P. Senthil Kumar ◽  
...  

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
H. Somashekarappa ◽  
Y. Prakash ◽  
K. Hemalatha ◽  
T. Demappa ◽  
R. Somashekar

The aim of this present work is to investigate the effect of plasticizers like Sorbitol on microstructural and mechanical properties of hydroxypropyl methylcellulose (HPMC) and Polyvinylpyrrolidone (PVP) blend films. The pure blend and plasticized blend films were prepared by solution casting method and investigated using wide angle X-ray scattering (WAXS) method. WAXS analysis confirms that the plasticizers can enter into macromolecular blend structure and destroy the crystallinity of the films. FTIR spectra show that there are a shift and decrease in the intensity of the peaks confirming the interaction of plasticizer with the blend. Mechanical properties like tensile strength and Young’s Modulus decrease up to 0.6% of Sorbitol content in the films. Percentage of elongation at break increases suggesting that the plasticized films are more flexible than pure blend films. These films are suitable to be used as environmental friendly and biodegradable packaging films.


2020 ◽  
Vol 563 (1) ◽  
pp. 161-176
Author(s):  
Wang Hui-Xin ◽  
Ren Hui ◽  
Cui Qingzhong ◽  
Yan Tao ◽  
Li Ya-Ru

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