Survismeter for simultaneous viscosity and surface tension study for molecular interactions

2008 ◽  
Vol 40 (1) ◽  
pp. 15-21 ◽  
Author(s):  
Man Singh
Langmuir ◽  
2013 ◽  
Vol 29 (25) ◽  
pp. 7600-7606 ◽  
Author(s):  
Mabya Fechner ◽  
Joachim Koetz

2019 ◽  
Vol 212 ◽  
pp. 395-402 ◽  
Author(s):  
Lenka Musilová ◽  
Věra Kašpárková ◽  
Aleš Mráček ◽  
Antonín Minařík ◽  
Martin Minařík

2003 ◽  
Vol 5 (21) ◽  
pp. 4864-4868 ◽  
Author(s):  
Ramón G. Rubio ◽  
Ana Díez-Pascual ◽  
Baudilio Coto ◽  
A. Crespo-Colín ◽  
A. Compostizo

2013 ◽  
Vol 354 ◽  
pp. 236-244 ◽  
Author(s):  
S. Chauhan ◽  
Vivek Sharma ◽  
Kundan Sharma

2021 ◽  
Vol 12 (3) ◽  
pp. 2776-2786

Temperature, concentration, and solvent conditions have consequences on the formation and dissolution of the drug. Viscometric measurements of paracetamol solutions of different concentrations in 5, 10, and 15% methanol have been made at 298.15, 303.15, 308.15, and 313.15K. Surface tension values (γ) of the solutions were obtained experimentally by using a stalagmometer as well as were derived from the ultrasonic velocity (U) and density (d) values at 298.15 K. The surface tension data have been analyzed using the Gibbs equation to evaluate surface excess (Γ_2). The surface tension and surface excess data obtained by the two different methods are well in accordance. The viscosity (ɳ) data were used to calculate relative viscosity (ɳ_(r ) ), Falkenhagen coefficients (A_(F )), Jone-Dole’s coefficients (B_(J ) ) and chemical potential (μ). The obtained data have been analyzed based on the Jones-Dole equation to know the molecular interactions.


2015 ◽  
Author(s):  
Pedro Pinto Ferreira Brasileiro ◽  
Bruno Freitas ◽  
Darne Germano de Almeida ◽  
Rita de Cassia Freire Soares ◽  
Juliana Moura de Luna ◽  
...  

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