Ioana Stanciu

I am a teacher of chemistry and physics in middle school and high school. I graduated from the Faculty of Chemistry of the University of Bucharest in 1998. Studies Master we made in the same college and we have completed in 2001. I obtained a Ph.D. in chemistry in 2008 after 6 years of research stage, in which we obtained multi-grade oils based on synthetic polymers. Since 2005 has participated in numerous national and international conferences, has papers publishing in journals national and international for study multi-grade oils, canola oils and sunflower oil. I continued the research by studying oils and get new rheological models describing their behavior.

EDUCATION

2008 – PhD in Chemistry at University of Bucharest, Faculty of Chemistry, Physical Chemistry Department,

2001 – M.Sc. in Applied Physical Chemistry and Radiation Chemistry at University of Bucharest, Faculty of Chemistry, Physical Chemistry Department

1998 – B.Sc. in Physics and Chemistry, University of Bucharest, Faculty of Chemistry, Physical Chemistry Department (

1994 – Bachelor chemistry, Lazar Edeleanu College (chemistry profile), Ploiesti

RESEARCH INTERESTS

chemistry, rheology, physical

Scopus Publications

A new mathematical model for the viscosity of vegetable oils based on freely sliding molecules
I. Stanciu
Editorial CSIC
Viscosity is one of the most important parameters for vegetable oil. A new mathematical viscosity model was developed based on freely sliding molecules with Lennard-Jones’ potential and linear density-temperature relation. According to the functions derived from the new model, viscosity gradually decreases with temperature at atmospheric pressure. Viscosity increases with density, however, due to the molecular momentum transfer and statistical effect of average molecular potential. After the temperature dependent function is fitted to the 417 experimental data points collected from references and distributed among the ranges: 278.15–453.15 K and 2.6-192.6 mPa.s, it was found that the calculated data agreed well with experimental data with R2 ≥ 0.961 for 13 oil samples. The density dependent function was also satisfactorily fitted to the 143 viscosity data points versus density from 5 oil samples with R2 ≥ 0.917.


Relationship dynamic viscosity and inverse absolute temperature to the concentrated solutions
Ioana Stanciu
Oriental Scientific Publishing Company
This paper presets the study of the rheological characteristics of the concentrated polyethylene-polypropylene copolymer solutions over the temperature range of 313-363 K and for shear rates between 3 and 1312 s-1. The measurements were performed on a Haake VT 550 rotational rheometer with a HV1 sensor. The rheology of the concentrated solutions is influenced by the shear rate, temperature and concentration of the tested copolymer. We have used a successful model that describes the rheological behaviour of the concentrated solutions in comparison to other models that do not consider the copolymer’s concentration. The parameter A reaches a peak for the 10% solution and a minimum for the 3% solution. The parameter B displays close values for all of the studied solutions.


The physico-chemicals analyzes of copolymer paratone 8900 used as viscosity improvers for SAE 10W-40 mineral oil
Ioana Stanciu
Oriental Scientific Publishing Company
Paratone 8900 is used as automotive for as viscosity improvers for multi-grade oils. In this study we established the physico-chemical analyses vized of a copolymer Paratone 8900 used as viscosity improvers for SAE 10W-40 mineral oil was: spectroscopy FTIR, thermo-gravimetric differential thermal analysis (TG-DTA), and the differential scanning calorimetry (DSC). The curve DSC evaluates the glass transition temperature. The thermogrames TG and DTA to evaluates their heat resistance of copolymer Paratone 8900. The kinetic parameters of copolymer Paratone 8900 were determination a method of multilinear regression analysis.


Rheological properties of rapeseed oil and hydraulic oil




Rheological properties of rapeseed oil and hydraulic oil - Research note -




Studies on some viscosity improvers for multi-grade oils 2. Rheological behaviour of concentrated solutions




Studies on some viscosity improvers for multi-grade oils 1. Solubility parameters

RECENT SCHOLAR PUBLICATIONS

Publications

,,Viscosity Index for Coconut Oil Used as Biodegradable Lubricant’’- I. Stanciu – PONTE International Scientific Researches Journal, 76(7), 222-225, (Factor impact 0,8140)

,,An extended Casson equation for rheological properties of soybean oil at different temperatures and atmospheric pressure’’- Stanciu Ioana, Noureddine Ouerfelli – Journal of Biochemical Technology, 3(11), 52-57 (Impact factor 1,3270) 2020

,,Study rheological behavior of refined rapeseed oil’’ – Ioana Stanciu – Technium, 2(2), 20-24, 2020

,,A novel equation correlating the rheological properties of some commercial tomato ketchups’’- Stanciu Ioana, Aymen Messaâdi, Octavio Díez-Sales, Suhailah S. Al-Jameel, Ezzedine Mliki, Jose V. Herráez, Noureddine Ouerfelli, Journal of Biochemical Technology, 3(11), 102-114, 2020 (Impact factor 1.3270)

,,Theoretical rheological models for olive oil’’ – Ioana Stanciu – Technium, 2(3), 122-127, 2020

,,Rheological characteristics of castor oil used as biodegradable lubricant’’ – Ioana Stanciu - Oriental Journal of Chemistry, 36(5), 973-975 (Impact factor 0,3700) 2020

,,Comparative study of rapeseed oil with hydraulic oil’’– Ioana Stanciu - Oriental Journal of Chemistry, 37(3), 752-754 (Impact factor 0,7470) 2021