A Cloud Point Study on the Micellar Growth of an Amphiphilic Drug in the Presence of Alcohol and Ionic Surfactant

2003 ◽  
Vol 107 (33) ◽  
pp. 8689-8693 ◽  
Author(s):  
Eui Jung Kim ◽  
Dinesh O. Shah
Keyword(s):  
Cloud Point ◽  
Ionic Surfactant ◽  
Amphiphilic Drug ◽  
Micellar Growth

Surfactants and ureas affect the cloud point of amphiphilic drug, clomipramine hydrochloride

2010 ◽  
Vol 81 (1) ◽  
pp. 152-157 ◽  
Author(s):  
Andleeb Z. Naqvi ◽  
Mohammed D.A. Al-Ahmadi ◽  
Mohd. Akram ◽  
Kabir-ud-Din
Keyword(s):  
Cloud Point ◽  
Amphiphilic Drug

scholarly journals Modification and Improvement of Fe3O4-Embedded Poly(thiophene) Core/Shell Nanoparticles for Cadmium Removal by Cloud Point Extraction

2020 ◽  
Vol 1 (1) ◽  
pp. 20-27
Keyword(s):  
Aqueous Solution ◽  
Cloud Point ◽  
Cloud Point Extraction ◽  
Calibration Graph ◽  
Nano Particles ◽  
Extraction Time ◽  
Ionic Surfactant ◽  
Nano Particle ◽  
Cadmium Removal ◽  
Shell Nanoparticles

Cloud Point Extraction (CPE) as an effective method for pre-concentration and separation of cadmium from aqueous solution is widely utilized. This study involves a surfactant mediated CPE procedure in order to remove cadmium from waste water using Polythiophene nanoparticle and Triton X- 100 as a non – ionic surfactant. Polythiophene – coated iron nanoparticles was successfully synthesized with novel method and as a super magnetic nano-particles (MNPs) for cadmium removal from aqueous solution was evaluated. Polythophene nano-particles emulsifying method have been synthesized and fabricated. Fabricated nano-particle was characterized by Fourier-transform infrared spectroscopy (FTIR), and analysed transmission electron microscopy (SEM). Effects of pH, buffer volume, extraction time, temperature, amount of nano-particle were essentially investigated. To reach in optimum conditions, related experiments were replicated and accomplished as well. For removal of cadmium by CPE approach the optimization conditions were gained at pH = 7 , volume of buffer acid 1.5 millilitre , electrolyte concentration (NaCl) of 10 -3 mole L-1 , Trinton concentration 5 %, cloud point temperature 80 0 C , extraction time 40 minutes, and 5 mg of modified polythiophene nano-particle. The calibration graph was liner with a correlation coefficient of 0. 9984 and represents appropriate liner correlation with an amount and concentration. The results revealed that 5 gram of modified nanoparticle can significantly increase the efficiency of cadmium removal.

CLOUD POINT AND DYE SOLUBILIZATION STUDIES OF AMPHIPHILIC DRUG SOLUTIONS: THE EFFECT OF ELECTROLYTES AND NONELECTROLYTES

2006 ◽  
Vol 193 (9) ◽  
pp. 1065-1074 ◽  
Author(s):  
Eui Jung Kim ◽  
Sunwook Kim ◽  
Ik-Keun Yoo ◽  
Jin Suk Chung ◽  
Jae Seong Kim ◽  
...  
Keyword(s):  
Cloud Point ◽  
Amphiphilic Drug ◽  
Dye Solubilization

scholarly journals Improvement of a 'SSQuEE' Method for Recovery and Preconcentration of Pesticides from Environmental Samples

2021 ◽  
Vol 33 (10) ◽  
pp. 2472-2476
Author(s):  
Rajib Joarder
Keyword(s):  
Cloud Point ◽  
High Performance ◽  
Limit Of Detection ◽  
Ionic Surfactant ◽  
Analytical Technique ◽  
Liquid Chromatography Separation ◽  
Cloud Point Temperature ◽  
Triton X ◽  
Optimum Extraction

A simple, sensitive, quick, easy and efficient (SSQuEE) analytical technique based on cloud point extraction (CPE) has been developed for the determination of different pesticides present in soil and water with high performance liquid chromatography separation and ultraviolet detection. The environmentally friendliness surfactant like Triton X -100, compared to Tween series of non-ionic surfactant can effectively extract imidacloprid (insecticide), flusilazole (fungicide) and atrazine (herbicide) at cloud point temperature at 67 ºC, 82 ºC and 62 ºC, respectively. To reach the optimum extraction efficiency, different experimental parameters like surfactant concentration, salt type and its concentration, equilibrium time and temperature, pH were observed. At the optimum conditions, linear regression coefficient of the standard curves was greater than 0.9924. The limit of detection of imidacloprid, flusilazole and atrazine were 0.10 μg L-1, 0.24 μg L-1, 0.15 μg L-1 and recovery percent are 99.71 %, 88.1% and 89.74%, respectively.

scholarly journals Salt Effect on the Cloud Point Phenomenon of Amphiphilic Drug-Hydroxypropylmethyl Cellulose System

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Mohd. Sajid Ali ◽  
Dileep Kumar ◽  
Hamad A. Al-Lohedan
Keyword(s):  
Cloud Point ◽  
Sodium Salt ◽  
Salt Effect ◽  
Tricyclic Antidepressant ◽  
High Concentration ◽  
Hydroxypropylmethyl Cellulose ◽  
Amphiphilic Drug ◽  
Amphiphilic Drugs ◽  
Nortriptyline Hydrochloride

Effect of two amphiphilic drugs (tricyclic antidepressant, nortriptyline hydrochloride (NORT), and nonsteroidal anti-inflammatory drug, sodium salt of ibuprofen (IBF)) on the cloud point of biopolymer hydroxypropylmethyl cellulose (HPMC) was studied. Effect of NaCl was also seen on the CP of HPMC-drug system. CP of HPMC increases uniformly on increasing the (drug). Both drugs, though one being anionic (IBF) and other cationic (NORT), affect the CP in almost the same manner but with different extent implying the role of hydrophobicity in the interaction between drug and polymer. Salt affects the CP of the drug in a dramatic way as low concentration of salt was only able to increase the value of the CP, though not affecting the pattern. However, in presence of high concentration of salts, minimum was observed on CP versus (drug) plots. Various thermodynamic parameters were evaluated and discussed on the basis of the observed results.

Cloud Point Phenomenon in Amphiphilic Drug Solutions

Langmuir ◽  
2002 ◽  
Vol 18 (26) ◽  
pp. 10105-10108 ◽  
Author(s):  
Eui Jung Kim ◽  
Dinesh O. Shah
Keyword(s):  
Cloud Point ◽  
Amphiphilic Drug
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