Comparative study of hydrophobic effects in water/alcohol and water/ethylene glycol, water/ethanolamine, water/ethylenediamine, and water/2-methoxyethanol systems

1993 ◽  
Vol 97 (28) ◽  
pp. 7359-7363 ◽  
Author(s):  
Yudu Cheng ◽  
Monique Page ◽  
Carmel Jolicoeur
Keyword(s):  
Ethylene Glycol ◽  
Comparative Study ◽  
Hydrophobic Effects ◽  
Water Alcohol

scholarly journals Comparative Study of Ag Nanostructures: Molecular Simulations, Electrochemical Behavior, and Antibacterial Effect

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Álvaro de Jesús Ruíz-Baltazar ◽  
Simón Yobanny Reyes-López ◽  
D. Larrañaga ◽  
R. Pérez
Keyword(s):  
Cyclic Voltammetry ◽  
Ethylene Glycol ◽  
Comparative Study ◽  
Sodium Borohydride ◽  
Electrochemical Behavior ◽  
Antibacterial Effect ◽  
Chemical Reduction ◽  
Molecular Simulations ◽  
The Other ◽  
E Coli

Nanoparticles of Ag with different sizes and structures were obtained and studied. Two methods for reductions of Ag ions were employed, chemical reduction by sodium borohydride and ethylene glycol. Cuboctahedral and icosahedral structures were obtained. Molecular simulations were carried out in order to evaluate the reactivity of both structures. On the other hand, the electrochemical activity and antibacterial effect (E. coli) of the cuboctahedral and icosahedral structures were measured experimentally. The results obtained by molecular simulation, cyclic voltammetry, and antibacterial effect were compared and discussed in this work.

Comparative study of dynamics in glass forming mixtures of Debye-type N-ethylacetamide with water, alcohol, and amine

2014 ◽  
Vol 141 (10) ◽  
pp. 104506 ◽  
Author(s):  
Xin Li ◽  
Zeming Chen ◽  
Zijing Li ◽  
Yanqin Gao ◽  
Wenkang Tu ◽  
...  
Keyword(s):  
Comparative Study ◽  
Glass Forming ◽  
Water Alcohol

scholarly journals Comparative Study of Fluid Package on Extractive Distillation of Ethanol-water Mixture Using Pure Glycerol and Ethylene Glycol as Extracting Solvents

2018 ◽  
pp. 1-12
Author(s):  
O. J. Odejobi ◽  
O. R. Oladokun ◽  
F. J. Ajeigbe
Keyword(s):  
Ethylene Glycol ◽  
Comparative Study ◽  
Feed Rate ◽  
Extractive Distillation ◽  
Base Case ◽  
Water Mixture ◽  
Pure Glycerol ◽  
The Comparative Study ◽  
Separating Agents ◽  
Alternative Designs

The comparative study of Peng Robinson Strygek Vera (PRSV) and Non-Random Two Liquid (NRTL) fluid packages on the extractive distillation of ethanol-water mixture was done using pure glycerol and ethylene glycol as extracting agents. The process was simulated using HYSYS V. 8.4. Pure glycerol and ethylene glycol-glycerol mixture were used as separating agents. The results showed the highest molar composition of ethanol in the distillate at the solvent feed rate of 80 kmol/hr when pure glycerol was used with NRTL fluid package. With the PRSV fluid package the highest ethanol in the distillate was obtained at pure glycerol feed rate of 50 kmol/hr. The ethanol fraction in the distillate was decreasing with increasing ethylene glycol and decreasing glycerol in the ethylene glycol-glycerol mixture. The comparative study of the base case and alternative designs showed high ethanol composition in distillate in the range of 99.46 - 99.96% and 99.96 - 99.67% for NRTL and PRSV fluid package, respectively. It was concluded from the study that the PRSV fluid package could save cost of operation because of lower solvent requirement and energy consumption in the reboiler for both the base case and alternative designs.

scholarly journals Macromolecular crowding and hydrophobic effects on Fmoc-diphenylalanine hydrogel formation in PEG : water mixtures

2015 ◽  
Vol 3 (48) ◽  
pp. 9269-9276 ◽  
Author(s):  
Md. Musfizur Hassan ◽  
Adam D. Martin ◽  
Pall Thordarson
Keyword(s):  
Secondary Structure ◽  
Ethylene Glycol ◽  
Pure Water ◽  
Macromolecular Crowding ◽  
Poly Ethylene Glycol ◽  
Hydrophobic Effects ◽  
Structure Changes ◽  
Hydrogel Formation ◽  
Poly Ethylene ◽  
P Addition

Addition of water triggers gelation in (poly)ethylene glycol (PEG) solutions of peptide gelators, with or without drugs added. The gels are formed by a combination of macromolecular crowding and hydrophobic effects as evident by significant secondary structure changes when compared to gel formed from pure water.

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