scholarly journals Synthesis and Characterization of New Organosoluble Poly(Amide-Imide)s with Good Thermal Properties Containing Photosensitive and Bicyclo Segments in the Main Chain

2011 ◽  
Vol 14 (6) ◽  
pp. 617-633 ◽  
Author(s):  
Mohsen Hajibeygi ◽  
Meisam Shabanian ◽  
Majid Khodaei-Tehrani
Keyword(s):  
Thermal Properties ◽  
Main Chain ◽  
Synthesis And Characterization

scholarly journals Synthesis and Thermal Properties of Cerium-Dysprosium Oxide

2016 ◽  
Vol 61 (2) ◽  
pp. 965-969 ◽  
Author(s):  
M. Mikuśkiewicz ◽  
M. Stopyra ◽  
G. Moskal
Keyword(s):  
Thermal Properties ◽  
Phase Composition ◽  
Thermal Diffusivity ◽  
Solid State ◽  
Cerium Oxide ◽  
Solid State Reaction ◽  
Synthesis And Characterization ◽  
Equimolar Ratio ◽  
Dysprosium Oxide

Abstract The paper presents results of investigation on synthesis and characterization of cerium-dysprosium oxide. The input powders - dysprosium oxide Dy2O3 and cerium oxide CeO2 - were mixed so as to obtain equimolar ratio of cations, milled in alcohol and synthesized via solid state reaction process at 1350°C under 15MPa in vacuum for 2h. The microstructure, phase composition and thermal properties were analyzed. The obtained material was multiphase. Non-stoichiometric compounds were identified. Thermal diffusivity of investigated material decreased in the temperature range of 25-1000°C from 0,71 to 0,45 mm2/s.

Synthesis and Properties of Functionalized Sulfur-Containing Hexa-Peri-Hexabenzocoronene

2015 ◽  
Vol 1088 ◽  
pp. 290-294
Author(s):  
Ying Wang ◽  
Wen Guang Wang ◽  
Rui Cheng ◽  
Jia Ling Pu
Keyword(s):  
Thermal Properties ◽  
Liquid Crystal ◽  
Absorption Spectra ◽  
Synthesis And Characterization ◽  
Discotic Liquid Crystal ◽  
Matrix Surface ◽  
Sulfur Containing ◽  
Columnar Spacing

Synthesis and characterization of a novel hexabenzocoronene (HBC) derivative attached with four alkyl swallow-tailed chains and two sulfur-containing chains are described. The designed peripheral decoration with dove tails as solubilizer and sulfur-containing groups as functionalizer is expected to improve the solubility of molecules, change the columnar spacing stacks and make for its orientation on matrix surface. Its UV−vis absorption spectra appeared in 350-400 nm region as same as typical that of this kind of compounds. The thermal properties as discotic liquid crystal and its orientation on matrix are being studied.

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