Solubilities of Some Cyclohexyl Derivatives of Dialkyl 1,4-Dihydro-2,6-dimethyl-4-(1-methyl-5-nitro-imidazol-2-yl)- 3,5-pyridinedicarboxylates (Nifedipine Analogues) in Supercritical Carbon Dioxide. Part I

2005 ◽  
Vol 50 (2) ◽  
pp. 344-347 ◽  
Author(s):  
Mostafa Khajeh ◽  
Yadollah Yamini ◽  
Ramin Miri ◽  
Bahram Hemmateenejad
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Nifedipine Analogues ◽  
Derivatives Of ◽  
Supercritical Carbon

Hydroformylation of alkenes in supercritical carbon dioxide catalyzed by rhodium complexes with amidophosphite derivatives of carboranes

2012 ◽  
Vol 6 (8) ◽  
pp. 883-887 ◽  
Author(s):  
S. E. Lyubimov ◽  
E. A. Rastorguev ◽  
P. V. Petrovskii ◽  
T. A. Verbitskaya ◽  
V. N. Kalinin ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Rhodium Complexes ◽  
Derivatives Of ◽  
Supercritical Carbon

scholarly journals Photocurable Methacrylate Derivatives of Polylactide: A Two-Stage Synthesis in Supercritical Carbon Dioxide and 3D Laser Structuring

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2525
Author(s):  
Vladislav S. Kaplin ◽  
Nikolay N. Glagolev ◽  
Valentina T. Shashkova ◽  
Irina A. Matveeva ◽  
Ilya V. Shershnev ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Crosslinking Agent ◽  
Two Stage ◽  
Dry Powders ◽  
Stage Synthesis ◽  
Local Stiffness ◽  
Derivatives Of ◽  
Laser Stereolithography ◽  
Supercritical Carbon

A two-stage polylactide modification was performed in the supercritical carbon dioxide medium using the urethane formation reaction. The modification resulted in the synthesis of polymerizable methacrylate derivatives of polylactide for application in the spatial 3D structuring by laser stereolithography. The use of the supercritical carbon dioxide medium allowed us to obtain for the first time polymerizable oligomer-polymer systems in the form of dry powders convenient for further application in the preparation of polymer compositions for photocuring. The photocuring of the modified polymers was performed by laser stereolithography and two-photon crosslinking. Using nanoindentation, we found that Young’s modulus of the cured compositions corresponded to the standard characteristics of implants applied in regenerative medicine. As shown by thermogravimetric analysis, the degree of crosslinking and, hence, the local stiffness of scaffolds were determined by the amount of the crosslinking agent and the photocuring regime. No cytotoxicity was observed for the structures.

Sign in / Sign up

Export Citation Format

Share Document