Results 251 to 260 of about 393,890 (299)

Synthesis of polyimides in supercritical carbon dioxide

The Journal of Supercritical Fluids, 2003
Abstract One-step polycyclization reaction in supercritical carbon dioxide has been carried out for the first time and a thereby set of polyimides has been synthesized. Diphenyl-2,2-hexafluoropropane-3,3′,4,4′-tetracarboxylic acid dianhydride (dianhydride 6F), 4,4′-diaminodiphenyl-2,2-hexafluoropropane (diamine 6F) and 9,9-bis(4-aminophenyl)fluorene ...
Yakov S. Vygodskii, Inna V. Pototskaya, Alexei R. Khokhlov, E. E. Said-Galiyev, Lev N. Nikitin, R. A. Vinokur, Marat O. Gallyamov, Kjeld Schaumburg, Vyacheslav V. Kireev   +8 more
openaire   +2 more sources

Foaming of polypropylene with supercritical carbon dioxide

The Journal of Supercritical Fluids, 2007
This work is aimed at studying the foaming behavior of polypropylene (PP) with supercritical carbon dioxide (scCO2). The effects of saturation time, foaming temperature, saturation pressure and depressurization rate on the foam structure and volume expansion ratio were investigated.
Guo-Hua Hu, Guo-Hua Hu, Xiu-Lei Jiang, Zhong-Nan Zhu, Wei-Kang Yuan, Tao Liu, Ling Zhao, Zhimei Xu   +7 more
openaire   +3 more sources

Measurement and Correlation of Curcumin Solubility in Supercritical Carbon Dioxide

, 2017
Curcumin is a natural phenolic pigment extracted from turmeric and has a good pharmacological activity in anti-inflammatory, antioxidant, hypolipidemic, and antitumor. It has been frequently used in drug-loaded microspheres recently. However, the reports
S. Zhan, Shuting Li, Qicheng Zhao, Weijing Wang, Jingchang Wang   +4 more
semanticscholar   +1 more source

Supercritical carbon dioxide extraction of plant phytochemicals for biological and environmental applications - A review.

Chemosphere, 2021
Thanigaivelan Arumugham, R. K, S. Hasan, P. Show, J. Rinklebe, F. Banat   +5 more
semanticscholar   +1 more source

Phytosterols and their extraction from various plant matrices using supercritical carbon dioxide: a review.

The Journal of the Science of Food and Agriculture, 2015
Phytosterols provide important health benefits: in particular, the lowering of cholesterol. From environmental and commercial points of view, the most appropriate technique has been searched for extracting phytosterols from plant matrices.
M. Uddin, M. Sarker, S. Ferdosh, Md. Jahurul Haque Akanda, M. S. Easmin, Siti Hadijah Bt Shamsudin, Kamaruzzaman Bin Yunus   +6 more
semanticscholar   +1 more source

Thermodynamic properties of supercritical carbon dioxide: Widom and Frenkel lines.

Physical review. E, Statistical, nonlinear, and soft matter physics, 2015
Supercritical fluids are widely used in a number of important technological applications, yet the theoretical progress in the field has been rather moderate.
Yu. D. Fomin, V. Ryzhov, E. N. Tsiok, V. Brazhkin   +3 more
semanticscholar   +1 more source

Polymerisations in supercritical carbon dioxide

1999
This thesis was digitised by the British Library from microfilm. You can acquire a single copy of this thesis for research purposes by clicking on the padlock icon on the thesis file. Please be aware that the text in the supplied thesis pdf file may not be as clear as text in a thesis that was born digital or digitised directly from paper due to the ...
openaire   +2 more sources

Preparation of pharmaceutical co-crystals through sustainable processes using supercritical carbon dioxide: a review

, 2016
The preparation of pharmaceutical co-crystals using supercritical CO2 (scCO2) is reviewed. Co-crystallization is an emerging and powerful technique to improve the physicochemical properties of an active pharmaceutical ingredient (API).
C. Pando, A. Cabañas, Isaac A. Cuadra
semanticscholar   +1 more source

A new semi empirical model for the solubility of dyestuffs in supercritical carbon dioxide

Chemické zvesti, 2021
R. S. Alwi, Chandrasekhar Garlapati
semanticscholar   +1 more source

Dissolution of uranium dioxide in supercritical fluid carbon dioxide

Chemical Communications, 2001
Uranium dioxide can be dissolved in supercritical CO2 with a CO2-philic TBP-HNO3 complexant to form a highly soluble UO2(NO3)(2).2TBP complex; this new method of dissolving UO2 that requires no water or organic solvent may have important applications for reprocessing of spent nuclear fuels and for treatment of nuclear wastes.
Neil G. Smart, Chien M. Wai, M. D. Samsonov, Yuri Kulyako, ‡ Su-Chen Lee   +4 more
openaire   +3 more sources