scholarly journals Carbon Soot Polymer Nanocomposites (CSPNCs): Production, Surface Morphological, Glass Transition Temperature Phenomenon and Optical Properties

2021 ◽  
Author(s):  
Rakhi Tailor ◽  
Yogesh Kumar Vijay ◽  
Minal Bafna
Keyword(s):  
Optical Properties ◽  
Glass Transition ◽  
Transition Temperature ◽  
Polymer Nanocomposites ◽  
Synthesis Methods ◽  
Solution Casting ◽  
Deposition Method ◽  
The Third ◽  
Carbon Soot ◽  
Solution Casting Method

The present chapter covers the production and properties of carbon soot nanoparticles (CSNPCs) and their doped carbon soot polymer nanocomposites (CSPNCs). The first part of this chapter will provide a brief introduction of carbon soot, its morphology, production and synthesis methods. The second part will explain the investigation of carbon soot nanoparticles by flame deposition method and their properties. The third part will provide a short knowledge on polymer nanocomposites (PNCs) and their processing methods. The last part will illustrate the production of carbon soot polymer nanocomposites by solution casting method and their important properties. At the end, the chapter concludes with future scopes.

Structural and optical properties of lithium bismuthate glasses

2002 ◽  
Vol 17 (8) ◽  
pp. 1941-1944 ◽  
Author(s):  
A. Pan ◽  
A. Ghosh
Keyword(s):  
Optical Properties ◽  
Glass Transition ◽  
Transition Temperature ◽  
Structural Unit ◽  
Infrared Region ◽  
Compositional Variation ◽  
Optical Study ◽  
Structural And Optical Properties ◽  
Transmission Window ◽  
Ion Conducting

Structural and optical properties of ion - conducting lithium bismuthate glasses are reported here. The structure of these glasses has been explored from the compositional variation of the density, molar volume, and glass transition temperature. The optical study in the visible and infrared region indicates a large transmission window for these glasses. The BiO6 octahedra were identified as the main structural unit from the Raman spectra of these bismuthate glasses.

scholarly journals The effective complex permittivity stability in filled polymer nanocomposites studied above the glass transition temperature

2018 ◽  
Vol 149 ◽  
pp. 01080
Author(s):  
F. Elhaouzi ◽  
A. Mdarhri ◽  
M. Zaghrioui ◽  
C. Honstettre ◽  
I. El Aboudi ◽  
...  
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Polymer Nanocomposites ◽  
Complex Permittivity ◽  
Filled Polymer

scholarly journals Filler Dependent Microstructural and Optical Properties of PVDF/PEG Blends Versus PVDF/GO Nanocomposites

2021 ◽  
Author(s):  
Maheswar Panda
Keyword(s):  
Optical Properties ◽  
Polymer Nanocomposites ◽  
Spin Coating ◽  
Polyvinylidene Fluoride ◽  
Optical Constants ◽  
Structural Features ◽  
Visible Range ◽  
Solution Casting ◽  
Uv Visible ◽  
Optical Applications

Abstract The micro-structural features and the optical properties of polymer blends (PB) of polyvinylidene fluoride (PVDF) base with polyethylene glycol (PEG) and polymer nanocomposites (PNC) of PVDF base with graphene oxide (GO) as fillers are compared. Different weight fractions of PVDF/PEG and PVDF/GO samples were prepared through solution casting followed by spin coating. The microstructure of PVDF/PEG and PVDF/GO shows formation of immiscible/compatible/ homogenous microstructures over different extents of loading of the filler components. UV-Visible spectrometry revealed an increase in absorbance with the amount of filler and the absorbance was found to be lesser and highly dispersive for the PB as compared to PNC, attributed to the heterogeneity/electrical conductivity of the respective fillers of the two systems. Spectroscopic ellipsometry was used to study the various optical constants (e.g. refractive index, extinction co-efficient, etc.) & their dispersion behavior over the visible range of wavelengths. The parameters show large variation as a function of component fillers due to the different extent of interaction of matrix/filler. The optimized parameters were obtained for the 20% PB & the 5% PNC samples respectively, suggesting PNC with nano fillers are always to be a better choice for developing them as materials suitable for various optical applications.

scholarly journals The effect of size and concentration of nanoparticles on the glass transition temperature of polymer nanocomposites

RSC Advances ◽  
2017 ◽  
Vol 7 (79) ◽  
pp. 50113-50120 ◽  
Author(s):  
Olga A. Serenko ◽  
Vyacheslav I. Roldughin ◽  
Andrey А. Askadskii ◽  
Elena S. Serkova ◽  
Pavel V. Strashnov ◽  
...  
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Polymer Nanocomposites ◽  
Polyphenylene Dendrimers

Here we use model nanocomposites based on polystyrene and polyphenylene dendrimers to show both theoretically and experimentally that inclusion of rigid nanoparticles of 2.3–5 nm size into the polymer leads to a negligible glass transition temperature (Tg) increase.

Thermal and Optical Properties of High Refractive Index xNb2O5-(1-x)La2O3 Glasses Prepared by Aerodynamic Levitation Method

2013 ◽  
Vol 749 ◽  
pp. 255-259 ◽  
Author(s):  
Yu Xing Cheng ◽  
Gui Sheng Xu ◽  
Jian Ding Yu ◽  
Xiu Hong Pan ◽  
Ming Hui Zhang ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
High Refractive Index ◽  
Infrared Region ◽  
Crystallization Peak ◽  
Promising Application ◽  
Aerodynamic Levitation

Bulk glasses of xNb2O5(1-x)La2O3(NL) with high refractive index were prepared by aerodynamic levitation method. Only when x ranges from 0.62 to 0.72, NL glasses can be obtained. The effect of compositions on the thermal property and refractive index was investigated. The results indicated that the glass transition temperature ranged from 733 to 767 with the increasing of La2O3in NL glasses, while the crystallization peak ranged from 811 to 837 . The glasses had high refractive index ranging from 2.26 to 2.31. According to the Drude-Voigt relationship, the Abbe number of the glasses was calculated to be about 20. This type of glass was colorless and transparent in the region from visible to infrared region. Thus, the niobate glass system has promising application in lenses, next-generation optical disk, and endoscopes.

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