P. B. Sandhya Sri

18 years of experience in research, 23 years of teaching experience in UG college

EDUCATION

M.Sc., B.Ed, M.Phil, Ph.D

RESEARCH, TEACHING, or OTHER INTERESTS

Physics and Astronomy, Acoustics and Ultrasonics, Physical and Theoretical Chemistry, Organic Chemistry

FUTURE PROJECTS

Scopus Publications

Thermo-physical, spectral evaluation of molecular interactions in liquid binaries of diethyl malonate and amides at temperatures (303.15, 308.15, 313.15, 318.15) K
Ch. Udayalakshmi, Shaik Beebi, P.B. Sandhya Sri, V.N.S.R. Venkateswararao, G. Lakshmana Rao, and C. Rambabu
Rasayan Journal of Chemistry
The velocity and density of binary mixtures of diethyl malonate with formamide, dimethylformamide and dimethylacetamide were experimentally measured at temperatures (303.15, 308.15, 313.15, 318.15)K. Various acoustic and thermodynamic parameters were evaluated using experimental data, the results have been discussed based on molecular interactions and geometric effects of the components in the mixture. FT-IR spectral analysis gives evidence of molecular association.


Theoretical evaluation of ultrasonic velocity in binary mixtures of isomeric butanols with ethyl benzoate




Ebulliometric determination of vapor-liquid equilibria for binary mixtures of NMP with some cyclic compounds
K. Rayapa Reddy, D. Bala Karuna Kumar, G. Srinivasa Rao, P.B. Sandhya Sri, Zareena Begum, and C. Rambabu
Elsevier BV



Partial molar volumes partial molar adiabatic compressibilities and molar Gibbs energies of anisaldehyde with some alkoxyethanols - Insights through plots showing compositional, volumetric and temperature dependence
Zareena Begum, P.B. Sandhya Sri, D.B. Karuna Kumar, K. Rayapa Reddy, and C. Rambabu
Elsevier BV



Thermodynamic, ultrasonic and FT-IR studies on binary liquid mixtures of anisaldehyde and alkoxyethanols at different temperatures
Zareena Begum, P.B. Sandhya Sri, D.B. Karuna Kumar, and C. Rambabu
Elsevier BV



Comparative study of theoretical ultrasonic velocities of binary mixtures of methanol and pyridine at different temperatures

RECENT SCHOLAR PUBLICATIONS

‘Thermo – Physical, Spectral Evaluation of Molecular Interactions in Liquid Binaries of Diethyl Malonate and Amindes at Temperatures (303.15, 308.15, 313.15, 318.15) K'
SB Dr. P. B. Sandhya Sri, Ch. Udaya Lakshmi
Rasayan Journal of Chemistry 13 (1), 707-722 2020



ULTRASONIC VELOCITIES, DENSITIES AND EXCESS THERMODYNAMIC PROPERTIES OF BINARY MIXTURES OF DI METHYL MALONATE WITH ALKANOLS FROM 303.15 TO 318.15K
PB Sandhyasri
Journalof Engineering Science 11 (4), 1191-1207 2020



Evaluation of Theoretical Velocities and Comparative Study of Ultrasonic Velocities in Binary Liquid Mixtures of Ethyl Lactate with Branched Alkanols at Different Temperatures
CR KAK Raj Kumar, VNSR Venkateswara Rao, P.B.Sandhyasri
Chemical Science Transactions 7 (2), 1469 2018



A Comparative analysis of ultrasound velocity in binary mixtures of DEM with branched alkanols by theoretical and experimental methods
CR V.N.S.R.Venkateswara Rao, P.B.Sandhyasri
Journal of Pharmaceutical Chemical and Biological Science 5 (4) 2017



Study of molecular interactions through theoretical evaluation of ultrasonic velocities in binary mixtures of ethyl lactate at different temperatures
GLRCRA KAK Rajkumar, P.B.Sandhyasri, G.Lakshmana Rao, A.Koteswara Rao
Journal of Chemistry & Chemical Sciences 7 (12), 1257-1266 2017



Viscometric studies on the molecular interactions of diethyl malonate with higher alkanes
CR P.B.Sandhyasri.
International journal in Applied Chemistry. Elixir Appl.Chem, 117 2017



Viscometric studies on the molecular interactions of diethyl malonate with higher alkanes
c.rambabu v.n.s.r.venkateswararo, sk.beebi, g.r.satyanarayana, p.b ...
International journal in Applied Chemistry. Elixir Appl.Chem, 103, 45741-45745 2017



Steric and electronic effects to interpret non-covalent interactions in binary mixtures of dimethyl carbonate and isomeric cresols through thermophysical,acoustic and
c.rambabu sk. beebi, md.nayeem, p.b.sandhyasri, zareena begum, g.r.satyanarayana
J of thermal Analysis and Calorimetry 113 (3) 2017



theoretical evaluation of ultrasonic velocity in binary mixtures of alkanols with di ethyl malonate
c.ambabu ch.udayalakshmi, k.a.k.rajkumar, p.b.sandhyasri
Physical Chemistry – an Indian Journal 11 (1), 6-14 2015



Excess parameters of binary mixtures of ethyl benzoate with o- xylene, p-xylene and o- chloro toluene at different temperatures, in
c.rambabu g.lakshmana rao, p.b.sandhyasri, g.r.satya narayana, k.a.k.rajkumar
journal of pharmaceutical research 7, 885-896 2015



Theoretical Evaluation of ultrasonic velocities in the binary mixtures of isomeric butanols with ethyl benzoate
c.rambabu g.lakshamana rao, p.b.sandhyasri, g.r.satyanarayana
Der Pharma Chemica 7 (10), 398 2015



Excess thermo dynamic studies in the binary mixtures of NMP and alkyl ethanoates at different temperatures”,
c.rambabu p.b.sandhyasri
Journal for Advanced Research in Applied Sciences 2 (2) 2015



Excess free volumes, internal pressures and molar available volumes in the binary liquid mixtures of N – methyl – 2- pyrrolidone at different temperatures
rambabu p.b.sandhyasri, d.b.k.kumar, k.r.reddy, g.s.rao,c
International Journal of advanced research in chemical science 2, 28-34 2015



Lennard Jones potentials for binary liquid mixtures of a multi functional fluid NMP with industrially useful solvents at different temperatures

International Journal of Engineering Research 3, 18-27 2015



Theoretical Evaluation and Comparitive study of ultrasonic velocities in binary mixtures of O-Chlorophenol with o,p Xylenes and o- chloro toluene at different temperatures
c.rambabu g.r.satyanarayana, p.sandhyasri, k.sujatha
International journal in Applied Chemistry. Elixir Appl.Chem, 77, 29018-29023 2014



Volumetric, acoustic and IR spectroscopic investigation of molecular interactions in selected binary liquid mixtures of N-methyl-2-pyrrolidone and alkyl amines over the
CR d. bal karuna kumar, k.rayayapa reddy, g.srinivasarao, p.b.sandhyasri, p ...
Journal of Molecular Liquids, , 199, 352-363 2014



Theoretical Evaluation ultrasonic velocity and viscosity in Binary mixtures of Amides with anisic aldehyde
c.rambabu p.b.sandhyasri, zareena begum
Physical Chemistry – A Indian jpurnal 9, 27-69 2014



Ebulliometric determination of vapor-liquid equilibria for binary mixtures of NMP with some cyclic compounds
c.rambabu k.rayapa reddy, d.bala karuna kumar, g.srinivasa rao, p.b ...
Journal of Molecular Liquids 193, 220-225 2014



Measurements of some physical properties of binary liquid mixtures (N-methyl-2-pyrrolidone+ an aliphatic ester) at several temperatures and data processing of viscosity and
DBK Kumar, KR Reddy, GS Rao, PB Sandhyasri, Z Begum, C Rambabu
Journal of Molecular Liquids 183, 31-44 2013



theoretical evaluation of ultrasonic velocity in binary mixtures of alkanols with di ethyl malonate
c.rambabu ch.udayalakshmi, k.a.k.rajkumar, p.b.sandhyasri
Physical Chemistry – an Indian Journal 11 (1), 6-14 2013

MOST CITED SCHOLAR PUBLICATIONS

Measurements of some physical properties of binary liquid mixtures (N-methyl-2-pyrrolidone+ an aliphatic ester) at several temperatures and data processing of viscosity and
DBK Kumar, KR Reddy, GS Rao, PB Sandhyasri, Z Begum, C Rambabu
Journal of Molecular Liquids 183, 31-44 2013
Citations: 52



Vapor–liquid equilibria and excess molar volumes of N-methyl-2-pyrrolidone with 2-alkoxyethanols
CR k.rayapareddy, D.Balakarunakumar,g.srinivasarao, P.B.Sandhyasri
Fluid Phase Equilibria, 336, 52-58 2012
Citations: 28



Comparative study of theoretical ultrasonic velocities of binary mixtures of methanol and pyridine at different temperatures
PBSCR G.V.Rama Rao, A.V.Sharma
Indian Journal of Pure & Applied Physics 45 (2), 135-142 2007
Citations: 26



theoretical evaluation of ultrasonicvelocities in binary liquidmixtures of anisaldehyde with some alkoxyethanols at different temperatures
CR Zareena Begum, P.B.Sandhyasri
ISRN - Physical Chemistry 2012 (article ID 943429), 12 2012
Citations: 13



Volumetric, acoustic and IR spectroscopic investigation of molecular interactions in selected binary liquid mixtures of N-methyl-2-pyrrolidone and alkyl amines over the
CR d. bal karuna kumar, k.rayayapa reddy, g.srinivasarao, p.b.sandhyasri, p ...
Journal of Molecular Liquids, , 199, 352-363 2014
Citations: 10



Ebulliometric determination of vapor-liquid equilibria for binary mixtures of NMP with some cyclic compounds
c.rambabu k.rayapa reddy, d.bala karuna kumar, g.srinivasa rao, p.b ...
Journal of Molecular Liquids 193, 220-225 2014
Citations: 10



Thermodynamic, ultrasonic and FT-IR studies on binary liquid mixtures of anisaldehyde and alkoxy ethanols at different temperatures
CR Zareena Begum, P.B.Sandhyasri, D.B.Karuna Kumar
Journal of Molecular Liquids 178, 99-112 2013
Citations: 8



Partial Molar Volumes partial molar adiabatic compresssibilities and moral Gibbs energies of anisaldehyde with some alkoxyethanols – insights through plots showing
c.rambabu zareena begum, p.b.sandhyasri, d.balakarunakumar, k.rayapareddy
Journal of Molecular Liquid 184, 33-42 2013
Citations: 4