scholarly journals Role of tunable polymer flexibility in controlling wetting behavior and thermal properties of poly(1,3‐cyclohexadiene)‐silica nanocomposites

SPE Polymers ◽  
2021 ◽  
Author(s):  
Kamlesh Bornani ◽  
Priyank Shah ◽  
Balaka Barkakaty ◽  
Jihua Chen ◽  
Bradley Lokitz ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Wetting Behavior ◽  
Silica Nanocomposites

scholarly journals Role of the Anilinium Ion on the Selective Polymerization of Anilinium 2-Acrylamide-2-methyl-1-propanesulfonate

Polymers ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 2349
Author(s):  
Alain Salvador Conejo-Dávila ◽  
Marco Armando Moya-Quevedo ◽  
David Chávez-Flores ◽  
Alejandro Vega-Rios ◽  
Erasto Armando Zaragoza-Contreras
Keyword(s):  
Cyclic Voltammetry ◽  
Optical Properties ◽  
Thermal Properties ◽  
Free Radical ◽  
1H Nmr ◽  
Molecular Interactions ◽  
13C Nmr ◽  
Oxidative Polymerization ◽  
Cyclic Voltammetry Analysis

The development of anilinium 2-acrylamide-2-methyl-1-propanesulfonate (Ani-AMPS) monomer, confirmed by 1H NMR, 13C NMR, and FTIR, is systematically studied. Ani-AMPS contains two polymerizable functional groups, so it was submitted to selective polymerization either by free-radical or oxidative polymerization. Therefore, poly(anilinium 2-acrylamide-2-methyl-1-propanesulfonic) [Poly(Ani-AMPS)] and polyaniline doped with 2-acrylamide-2-methyl-1-propanesulfonic acid [PAni-AMPS] can be obtained. First, the acrylamide polymer, poly(Ani-AMPS), favored the π-stacking of the anilinium group produced by the inter- and intra-molecular interactions and was studied utilizing 1H NMR, 13C NMR, FTIR, and UV-Vis-NIR. Furthermore, poly(Ani-AMPS) fluorescence shows quenching in the presence of Fe2+ and Fe3+ in the emission spectrum at 347 nm. In contrast, the typical behavior of polyaniline is observed in the cyclic voltammetry analysis for PAni-AMPS. The optical properties also show a significant change at pH 4.4. The PAni-AMPS structure was corroborated through FTIR, while the thermal properties and morphology were analyzed utilizing TGA, DSC (except PAni-AMPS), and FESEM.

Effect of size and shape of nanofillers on electrostatic and thermal behavior of epoxy-based composites

2021 ◽  
pp. 096739112110324
Author(s):  
Mihir N Velani ◽  
Ritesh R Patel
Keyword(s):  
Thermal Properties ◽  
Breakdown Strength ◽  
Electrical Power ◽  
Filler Loading ◽  
Filler Concentration ◽  
Computational Technique ◽  
Electrical Power System ◽  
Potential Applications ◽  
Different Shapes

The role of nanodielectrics in the electrical power system is becoming crucial owing to its superior properties and potential applications in the field. Yet, the materials face limited breakdown strength and thermal properties. Further, the nanodielectrics have not found a comprehensive commercial platform because of the costly manufacturing process, and characterization and testing facilities. Therefore, to reduce the involved cost, in this work, an FE (finite element) based computational technique has been implemented to visualize the effect of shape, size, and filler concentration under the application of high voltage (HV). The epoxy-based nanodielectrics have been modeled incorporating a range of different shapes and size nanofillers—Al2O3, BN, BeO, SiO2, and TiO2. The paper discusses the 2D-analysis of the modeled nanodielectric in the steady-state electrostatic fields and thermal domains. It shows the insights of the nanofillers’ choice to ensure a perfect blend of electrical and thermal properties. The epoxy with square-shaped BeO fillers showed a rise in the electric field of nearly 1.5 times than unfilled neat epoxy, which indicates a significant surge in thermal conductivity at specific filler loading.

Water content and thermal properties of glassy silver metaphosphate: role of the preparation

1993 ◽  
Vol 163 (1) ◽  
pp. 97-103 ◽  
Author(s):  
Piercarlo Mustarelli ◽  
Corrado Tomasi ◽  
Aldo Magistris ◽  
Sergio Scotti
Keyword(s):  
Thermal Properties ◽  
Water Content

Role of alumina filler on thermal properties of carbon-epoxy nanocomposites

2021 ◽  
Author(s):  
B.R. Lokesh Yadhav ◽  
C. Chandan ◽  
T. Raghavendra ◽  
B. Suresha ◽  
H.K. Govinda Raju
Keyword(s):  
Thermal Properties ◽  
Epoxy Nanocomposites
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