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The present study is based on the interaction between three polyethylene oxide-polypropylene oxide-polyethylene oxide (PEO-PPO-PEO) triblock copolymers namely Pluronics® L81, P84 and F88 (with same PPO Mol. Wt. but 10,40 and 80% PEO, respectively) and the ionic surfactants (with 12-C chain but different polar head group charge viz. sodium dodecyl s...
Here we report comprehensive analysis on the influence of different alkyltriphenyl phosphonium (CnTPPBr) (with varying alkyl chain lengths) based cationic surfactants displaying analogical characteristics to ionic liquids (IL) on the physicochemical properties of an ethylene oxide–propylene oxide (EO–PO) triblock copolymer, Pluronic®, P103 (EO17-PO...
This study reports the effect of several cationic surfactants namely C16TABr,C16TPPBr, C16TBPBr, C16PyBr, C16TACl and C16TATs, each with 16C long alkyl side chain but different counterions and head groups on the micellar behavior of an ethylene oxide-propylene oxide (EO-PO) linear triblock copolymer, Pluronic® 103 from cloud point (CP), dynamic lig...
The temperature and pH dependent self-assembly of three star shaped ethylene oxide-propylene oxide (EO-PO) block copolymers (Tetronics® 304, 904 and 908) with widely different hydrophobicity was examined in aqueous solutions. Physico-chemical methods viz. viscosity, cloud point, solubilization along with thermal, scattering and spectral techniques...
![Fig. 4. Plot of logk against log[H 2 O].](profile/Sangita-Sharma-4/publication/235432846/figure/fig4/AS:11431281304844930@1737538250106/Plot-of-logk-against-logH-2-O_Q320.jpg)
Kinetic study of hydroxide anion catalyzed hydrolysis of ethyl acrylate has been carried in etha�
nol–water (10–50% v/v) binary systems at the temperature range 30 ± 0.1, 35 ± 0.1, 40 ± 0.1 and 45 ± 0.1°C.
Calculated specific rate constant values decreases with increasing proportion of ethanol at all temperatures.
The observed retardation of a base...
Singh-Jha method is applied to calculate b* of Laidler-Landskroener equation, the distance of closed approach of solvent molecules to the activated complexes in alkaline hydrolysis of vinyl acetate. This method is applied to alkaline hydrolysis of vinyl acetate in water enriched ethanol between 30 °C and 35 °C. The rate of hydrolysis decreases with...
