scholarly journals HOMOGENEOUS TRIMETHYLSILYLATION OF CELLULOSE IN THE DIMETHYL SULFOXIDE-PARAFORMALDEHYDE SOLVENT SYSTEM

1979 ◽  
Vol 35 (11) ◽  
pp. T466-T478 ◽  
Author(s):  
Nobuo Shiraishi ◽  
Yoshifumi Miyagi ◽  
Shigeko Yamashita ◽  
Tokuo Yokota ◽  
Yoshiyuki Hayashi
Keyword(s):  
Dimethyl Sulfoxide ◽  
Solvent System

scholarly journals Homogeneous grafting of cellulose with polycaprolactone using quaternary ammonium salt systems and its application for ultraviolet-shielding composite films

RSC Advances ◽  
2018 ◽  
Vol 8 (20) ◽  
pp. 10865-10872 ◽  
Author(s):  
Yongqi Yu ◽  
Xin Gao ◽  
Zeming Jiang ◽  
Wentao Zhang ◽  
Jiwei Ma ◽  
...  
Keyword(s):  
Dimethyl Sulfoxide ◽  
Microcrystalline Cellulose ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Ring Opening ◽  
Composite Films ◽  
Solvent System ◽  
System P ◽  
Ultraviolet Shielding ◽  
Salt Systems

Microcrystalline cellulose graft polycaprolactone (MCC-g-PCL) was successfully synthesized by ring-opening copolymerization catalyzed by 4-dimethylaminopyridine in a dual tetrabutylammonium acetate/dimethyl sulfoxide solvent system.

Reactions in mixed non-aqueous systems containing sulfur dioxide. V. The formation of metal sulfur oxyanion compounds by the electrolytic solution of metals

1983 ◽  
Vol 36 (10) ◽  
pp. 1991 ◽  
Author(s):  
NK Graham ◽  
JB Gill ◽  
DC Goodall
Keyword(s):  
Sulfur Dioxide ◽  
Dimethyl Sulfoxide ◽  
Binary Systems ◽  
Solvent System ◽  
Binary Solvent ◽  
Aqueous Systems ◽  
Electrolytic Solution ◽  
Solvent Parameters

The metals Ti, Zr, V, Cr, Mo, Fe, Ni and Sn dissolve electrolytically in the binary solvent system dimethyl sulfoxide-sulfur dioxide, forming metal disulfates; W forms sulfate. The metals dissolve electrolytically in other binary systems containing sulfur dioxide, forming mixtures of sulfur oxyanions. The importance of solvent parameters in metal reactivity is discussed, together with the mechanism of the reactions.

Solvation of ions. Some applications. V. Electrolytic recovery of silver from non-aqueous solutions

1983 ◽  
Vol 36 (9) ◽  
pp. 1695 ◽  
Author(s):  
S Jayasekera ◽  
J Avraamides ◽  
AJ Parker
Keyword(s):  
Dimethyl Sulfoxide ◽  
Cell Voltage ◽  
Solvent System ◽  
Cathode Current Density ◽  
Electrolysis Cell ◽  
Silver Deposits ◽  
Tafel Slopes ◽  
Solvation Of Ions ◽  
Cathode Current ◽  
A Current

Electrolysis of a dimethyl sulfoxide solution containing AgCl2- and CuCl2- has been shown to produce high-purity, adherent, non-dendritic cathode silver with a current efficiency of over 80%. At the anode, CuCl2- was oxidized to Cu2+. An optimum electrolyte/solvent system was chosen after a study of the various parameters contributing to the conductivity of the solution. Diffusion coefficients and Tafel slopes were measured, as were the various potentials contributing to the cell voltage. Good silver deposits were obtained by using 0.75 M CaCl2.2H2O, 0.5 M AgCl and 0.5 M CuCl in dimethyl sulfoxide at 50�C at a cathode current density of 5 mA cm-2. A practical electrolysis cell is proposed for use with a cyclic leach-electrowin process for recovering pure silver from various high-grade secondary residues.

Ternary solvent for CH3NH3PbI3 perovskite films with uniform domain size

2017 ◽  
Vol 19 (2) ◽  
pp. 1143-1150 ◽  
Author(s):  
Lin Xie ◽  
Heewon Hwang ◽  
Minjung Kim ◽  
Kyungkon Kim
Keyword(s):  
Dimethyl Sulfoxide ◽  
Domain Size ◽  
Solvent System ◽  
Uniform Domain

A ternary solvent system consisting of dimethyl sulfoxide (DMSO), γ-butyrolactone (GBL) and N-methyl-2-pyrrolidone (NMP) has been developed to improve the uniformity of CH3NH3PbI3 (MAPbI3) perovskite domains.

scholarly journals Synthesis, Experimental and Density Functional Theory (DFT) Studies on Solubility of Camptothecin Derivatives

Molecules ◽  
2018 ◽  
Vol 23 (12) ◽  
pp. 3170 ◽  
Author(s):  
Chin-Hung Lai ◽  
Chia-Chin Chang ◽  
Yi-Lin Weng ◽  
Ta-Hsien Chuang
Keyword(s):  
Density Functional Theory ◽  
Water Molecule ◽  
Dimethyl Sulfoxide ◽  
Normal Saline ◽  
Density Functional ◽  
Solvent System ◽  
Aprotic Solvents ◽  
Dft Studies ◽  
Functional Theory ◽  
Solvent Systems

Two camptothecin derivatives, 10-cyclohexyl-7-methyl-20(S)-camptothecin and 7-methyl-10-morpholino-20(S)-camptothecin, were synthesized and their differences in solubility were investigated using four chosen solvent systems. Based on our results, 10-cyclohexyl-7-methyl-20(S)-camptothecin exhibited higher solubilities than 7-methyl-10-morpholino-20(S)-camptothecin in polar aprotic solvents. However, these two camptothecin derivatives did not exhibit apparent differences in solubility between 5% dimethyl sulfoxide (DMSO)/95% normal saline co-solvent system and 5% dimethylacetamide (DMAC)/95% normal saline co-solvent system. To rationalize their differences in solubility, we also tried to perform a DFT-B3LYP study to investigate their interaction with one water molecule.

Homogeneous Modification of Sugarcane Bagasse with Succinic Anhydride in Novel Solvent Systems without Additional Catalysts

2012 ◽  
Vol 550-553 ◽  
pp. 1404-1408
Author(s):  
Chao Yi Chen ◽  
Chuan Fu Liu ◽  
Run Cang Sun
Keyword(s):  
Dimethyl Sulfoxide ◽  
Sugarcane Bagasse ◽  
Room Temperature ◽  
Succinic Anhydride ◽  
Solvent System ◽  
Special Role ◽  
Ft Ir ◽  
Solvent Systems ◽  
Homogeneous Modification

Homogeneous modification of sugarcane bagasse with succinic anhydride (SA) was investigated in novel solvent systems ionic liquid 1-butyl-3-methylimidazolium chloride/dimethyl sulfoxide ([C4mim]Cl/DMSO) and dimethyl sulfoxide/N-methylimidazole (DMSO/NMI), respectively. The results showed that succinoylation of SCB with SA was accomplished in [C4mim]Cl/DMSO at high temperature and in DMSO/NMI at room temperature without any additional catalysts. Increasing SA/SCB mass ratio from 2:1 to 3:1 and 4:1 resulted in an improvement of WPG from 21.1 to 29.6 and 30.4 in [C4mim]Cl/DMSO at 120oC, and from 97.3 to 102.5 and 118.4 in DMSO/NMI at room temperature, respectively. The high succinoylation efficiency in DMSO/NMI at room temperature was probably due to the special role of NMI as a solvent, a base and a catalyst in this solvent system. FT-IR and CP/MAS 13C-NMR analyses also provided evidences of succinoylation reaction of SCB with additional catalysts in [C4mim]Cl/DMSO and in DMSO/NMI. The results indicated that the succinoylation of lignin and carbohydrates all occurred.

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