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Long Eaton 
£25/h
1st lesson free!
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Response Time 1h
Lessons offered by Alexander
  • Individual
The lessons will be held
  • at his home
  • at your home
Taught subjects
  • Maths
  • Physics
  • Chemistry
  • Thermodynamics
  • Chemical Physics
  • Chemical Engineering
Levels
  • All Levels

PhD in Chemistry and Chemical Engineering able to provide private tutoring in the East Midlands

Methodology

I prefer a dynamic approach to teaching and feel it is best to engage my students in conversation about a topic rather than to drone through it in lectures. I also enjoy working with practical examples rather than abstract problems.

Background

I am a postdoctoral researcher at the University of Nottingham with 15 years of experience in academia. I have a PhD in Polymer Science and have been working as a postdoctoral researcher in Chemical Engineering for 5 years. I have worked as a practical demonstrator, tutor and lecturer throughout my professional career.

Rates

Transportation Fee : £10
Rate for 5 hours of lessons : £22
Rate for 10 hours of lessons : £20

Details

I will only charge travel fees for distances over 10 miles and they will be adjusted to cover my petrol costs.

Lessons offered by Alexander
Individual
The lessons will be held
at his home
at your home
Taught subjects
  • Maths
  • Physics
  • Chemistry
  • Thermodynamics
  • Chemical Physics
  • Chemical Engineering
Levels
  • All Levels

Alexander's CV

Dr. Alexander Assenov Ilchev

Languages: English, Bulgarian, Polish and Afrikaans
Current Address: 30 Burton Court
Oxford Street
Long Eaton
Derbyshire
United Kingdom
NG10 1JW
Nationality: Bulgarian (EU citizen)
Contact Details:
Phone: (+44)78 9530 3609
Email: (concealed information)
(concealed information)

Academic Record:
January 2012 – December 2014: PhD in Polymer Science at Stellenbosch University.
Thesis Title: Amine End-Functional Poly(N-vinylpyrrolidone) as a Macroinitiator for
L-lysine N-carboxyanhydride Polymerization - Towards the Preparation of pH-Responsive Micelles for Drug Delivery
Outline: Improving the therapeutic index and reducing the toxicity of existing chemotherapy
drugs by incorporating it in a drug delivery system (DDS). The components were synthesized using Reversible Addition-Fragmentation chain Transfer (RAFT) polymerization and N-Carboxyanhydride ring-opening polymerization. The DDS was designed to self-assemble into micelles at pH = 7 while covalently incorporating the drug payload within its core. They were also designed to dissociate at pH < 6, releasing their payload.
Graduated.



January 2009 – March 2011: MSc in Chemical Science at the University of the Western Cape.
Thesis Title: Platinum Group Metal Nanoparticle Architecture and their Electrophoretic
Deposition.
Outline: Development of the achievable nanoarchitectures for platinum coatings, prepared by
electrophoretic deposition, on various substrates. This research aimed at innovating magnetic storage media. Focussed on electrochemistry, electrophoresis, scanning as well as transmission electron microscopy and x-ray diffraction.
Graduated Cum Laude.

January 2008 – December 2008: B.Sc. Honours in Chemical Science at the University of the Western Cape.
Project Titles: Carbon Dioxide Sequestration
Polymer-Zeolite composite gas separation membranes for hydrogen purification
Graduated Cum Laude.

January 2005 – December 2007: B.Sc. in Chemistry and Mathamatics at the University of the Western Cape.
Graduated Summe Cum Laude.

December 2003: Completed high school with matric exemption from Parel Vallei High School in Somerset West.
Subjects: Mathematics HG, Natural Science HG, Biology HG, English HG, Afrikaans HG, Home Economics HG.

Conferences and Workshops:
2019 Analysis of Long-Chain Petroleum Hydrocarbons and VOCs in Soil by GC-MS
2018 Accuracy and Precision in GPC/SEC: Measurement uncertainty
2018 Compliant GPC/SEC/IPC and traceable results
2018 Non-size based separations: Interaction Polymer Chromatograhy (IPC)
2018 Membrane characterization using GPC/SEC
2018 Introducing the Theory and Practice of HILIC Separations Including a Step-by-Step Guide to HILIC Method Development
2018 Medical Devices and the CE mark, what it means and what you need to know
2017 Micro-mechanics of ultra-high molecular weight polyethylene fibre composites
2016 Liquid Adsorption Chromatography for Polymers: Method development for Polymer-HPLC
2016 GPC/SEC-Light Scattering
2016 RSC summer science exhibition – Plastics Inside Us (presenter)
2015 – 2018 High Pressure Safety Training at University of Nottingham
2016 Hydrofluoric Acid Safety Training at University of Nottingham
2016 Warwick Polymer Symposium
2016 Energy Technologies Research Institute Lecture – Preparing The UK for the Energy Transition: the Next Decade is crucial. By: Jo Coleman
2014 3rd annual ChromSA seminar:
High Resolution, Accurate Mass, Time-of-Flight Mass Spectrometry and Comprehensive Gas Chromatography (GCxGC) by Peter Gorst-Allman.
Changing GC Carrier Gas from Helium to Hydrogen by Dr. E. Connor from Peak Scientific.
Advances and implementation of Supercritical Fluid Chromatography for drug development in the pharmaceutical industry by Dr. C. Brunelli from Pfizer.
2014 Workshop on Biomedical Materials by Dr. A. Coury.
2013 Presentation by J. Van Antwerp from Waters Corporation on Convergence Chromatography.
2012 Workshop on Chemistry in Industry by Wolfgang M. Mackenroth.
2012 Workshop on the Agilent 1260 HPLC with UV/Vis-DA and ELS detectors by Dr. Andre Scheffer.
2012 Workshop on FT-IR and UV-Vis by Agilent Technologies.
2011 Workshop on Secondary Ion Mass Spectrometry by Michael Wiedenbeck.


Publications:
Title: Deposition of Platinum Nanoparticles onto Copper Foils by Electrophoresis: A Study of the Sintering Dynamics at the Platinum-Copper Interface.
Authors: Ilchev, A. A.; Blaine, D. C.; Petrik, L. F.; Nechaev, A. N.
Journal: Ceramic Transactions, 2012, 232, 3
ABSTRACT: The effect of decreasing the size of platinum to the nanoscale for the copper-platinum alloy system was investigated while coupled to the research on the electrophoresis of platinum nanoparticles. It was observed that the temperature for the nanoPt-Cu eutectoid transformation decreased to 300°C compared to the value of 418°C for a bulk Pt-Cu system. HRTEM and XRD results showed that sintering between the Pt nanoparticles and copper surface begins at temperatures as low as 200°C. Surface diffusion was dominant at 200°C while bulk diffusion became dominant at 300°C, at which stage the sintered product had formed a tri-phasic system of pure copper, Pt-Cu alloy and Pt nanoparticles which were sintered to the alloy. No platinum nanoparticles remained after sintering at 400°C, having all diffused into the Pt-Cu alloy. Sintering above 300°C saw the appearance of the Cu 3Pt phase. HRTEM imaging of the particles found that there was an increase in particle size from 2.5 nm at 25°C to 0.5 microns at 400°C. These results were compared to particle size calculations using XRD measurements. The particle geometry changed from spherical at 25°C to cubic at and above 300°C.

Title: Improved Control Through a Semi-Batch Process in RAFT-Mediated Polymerization Utilizing Relatively Poor Leaving Groups.
Authors: Ilchev, A. A.; Pfukwa, R.; Hlalele, L.; Smit, M.; Klumperman, B.
Journal: Polym.Chem.,2015,6, 7945
ABSTRACT: The negative effect that a RAFT agent with a poor leaving group has on the evolution of molecular dispersity in a RAFT-mediated polymerization was shown to be mitigated by performing the polymerization in semi-batch mode. The result is attributed to an increase in the probability of transfer between the propagating radical and the leaving group during the polymerization. Also for RAFT-mediated polymerizations that use RAFT agents with efficient leaving groups, the evolution of molecular dispersity during a semi-batch polymerization improves compared to that for an analogous batch-mode reaction.

Title: Integrated molecular design of melt-processable bioresorbable engineering nanocomposites for healthcare (BENcH).
Authors: Parsons, A. J.; Walton, K.; Hild, F.; Ilchev, A. A.; Gimeno-Fabra, M.; Tomczynska, M. M.; Ward, M.; Canciani, A.; Choong, G. Y. H.; De Focatiis, D. S.; Lester, E. H.; Grant, D. M.; Irvine, D. J.
Journal: Frontiers in Bioengineering and Biotechnology 4, DOI: 10.3389/conf.FBIOE.2016.01.01167
ABSTRACT: The aim of the BENcH project is to develop novel, integrated methodologies for the design and scalable manufacture of next generation resorbable polymer nanocomposites. The long-term objectives are the production of highly tailored health-care materials in applications ranging from bone fracture fixation to drug delivery. Novel plate-shaped hydroxyapatite (HA) nanoparticles have been simultaneously formed and coated with specifically designed molecular dispersants using a hydrothermal process, to produce a feedstock for compounding with medical grade polylactic acid (PLA). The end-products are formed using traditional plastics processing techniques and their properties investigated both post-moulding and during degradation. Close contact with industrial partners has ensured that all the processes in use are commercially scalable and a demonstrator product is under development.




Title: Melt-processed PLA/HA platelet nanoparticle composites produced using tailored dispersants.
Authors: Parsons, A. J.; Walton, K.; Hild, F.; Ilchev, A. A.; Gimeno-Fabra, M.; Tomczynska, M. M.; Ward, M.; Canciani, A.; Choong, G. Y. H.; De Focatiis, D. S.; Lester, E. H.; Grant, D. M.; Irvine, D. J.
Journal: The 5th International Conference of Bionic Engineering
ABSTRACT: Hydroxyapatite (HA) nanoparticles, similar to those seen in the structure of human bone, have been produced via hydrothermal synthesisand used to produce nanocomposite materials via melt blending with poly(lactic acid)(PLA). Both of these processes are scalable and commercially relevant. Tailored dispersants were developed and used to improve the dispersion of the HA. Modest improvements in flexural properties were observed (max increases 30% of dry modulus, 13% of wet strength). Rheometry is not suggestive of achieving percolation,so there is potential to improve mechanical properties further. It was established that very dry processing conditions are essential to maintaining the molecular weight of the PLA during processing and that the use of the tailored dispersants can also help to mitigateprocess-induced degradation.MicroCT has proved to be a useful quality control tool to support TEM analysis.

Title: Optimised use of dielectric spectroscopy at microwave frequencies for direct online monitoring of polymerisation reactions.
Authors: Kalamiotis, A.; Dimitrakis, G.; Ilchev, A. A.; Irvine, D. J.
Journal: Sensors & Actuators: B. Chemical
ABSTRACT: This study reports the first use of dielectric spectroscopy over at a wide frequency range to monitor, in real time, the progress of a ring opening polymerisation. An open-ended coaxial line sensor was placed directly into the reaction medium of a polymerisation of ε-caprolactone and used to characterise the dielectric properties of the polymerisation mixture both ‘in-situ’ and with time at microwave frequencies. In addition to measurements obtained by the sensor, samples of the medium were extracted at various time points for off-line analysis, to confirm the level of conversion and polymer molecular weights that had been achieved. The results demonstrated that the dielectric properties values exhibited by the reaction medium with time could be correlated directly to the progress of the reaction. Thus, the experimental data allowed the construction of a calibration curve which could be used to predict the conversion of monomer to polymer at any given point of the reaction. The dielectric data permitted also the identification of key reaction parameters, such as the optimum point of termination for the reaction. Furthermore, the analysis of the dielectric data over a wide frequency spectrum enabled the identification of the most suitable frequencies for the practical operation of the sensor, in terms of linearity and sensitivity. This will enable the development of suitable instrumentation and an improved strategy for the online monitoring and control of a broad range of polymerisation reactions.
Title: Design and Optimisation of a Microwave Reactor for Kilo-Scale Polymer Synthesis.
Authors: Buttress, A.; Hargreaves, G.; Ilchev, A. A.; Monti, T.; Sklavounou, A.; Katrib, J.; Martin-Tanchereau, P.; Unthank, M.; Irvine, D. J.; Dodds, C.
Journal: Chemical Engineering Science
ABSTRACT: Current industrial production of polymer resins is generally undertaken in large multi-tonne stirred tank reactors. These are characterised by relatively slow heating and cooling cycles, resulting in long vessel cycle times and extended production campaigns. In this work we present a design for a hybrid microwave/oil jacket proof of concept system capable of producing 4.1kg of polymer resin per batch. By exploiting rapid volumetric heating effects of microwave energy at 2.45GHz, we have optimised the synthetic regime, such that a polyester resin pre-polymer can be made in only 8 hours 20 minutes, with higher molecular weight (Mn 2,100) compared to the conventional process taking 22 hours 15 minutes (Mn 1,200), yielding an increase in synthesis rate of at least 275%. The increase in polymer molecular weight also suggests a higher conversion was achieved over a shorter time scale.

Work History:
June 2015 – Present: Postdoctoral research associate at the University of Nottingham.
Responsibilities:
Postdoctoral researcher on following projects:
Scale up production of novel biomedical materials.
Scale up monomer/polymer synthesis of sustainable polymers.
Characterise the material properties of these products using techniques including NMR, FTIR, HPLC, GPC, MALLS, DLS, DMA, DSC, TGA, GC-MS, Dielectric Spectroscopy, Rheometry and Electron Microscopy.
Scale up microwave-assisted pyrolysis of polyolefins to produce transport fuels.
Supervise MSc and PhD students with similar projects – aid in writing papers/theses and in practical work.
Substitute lecturer for MM4POE module (section 1) in 2017
Maintain analytical and preparative GPCs and train users to use them.

January 2012 – June 2013: Chemistry tutor and practical demonstrator (part time) for first year students at Stellenbosch University.

September 2011 – November 2011: Substitute first year lecturer at the University of the Western Cape.
Subject: Chemistry for Nursing Students.

January 2008 – December 2008: Chemistry tutor and practical demonstrator (part time) for first year students at the University of the Western Cape.

Awards:

PhD Incentive of ZAR 20000.00 for Completing PhD within a 3 year time frame.
2015
South African Chemical Institute’s James Moir award for best honours student.
2008
UWC Dean’s Merit award for achieving an average of over 80% for B.Sc. Honours.
2008
Merck chemistry award for best third year student at the University of the Western Cape.
2007
UWC Dean’s Merit award for achieving an average of over 80% for the third year of my B.Sc degree.
2007

UWC Dean’s Merit award for achieving an average of over 80% for the second year of my B.Sc degree.
2006

UWC Dean’s Merit award for achieving an average of over 80% for the first year of my B.Sc degree.
2005



Skills:
Chemical Processes
Reversible Addition-Fragmentation chain-Transfer polymerisation (RAFT)
Atom Transfer Radical Polymerisation (ATRP)
Ring Opening Polymerisation of N-carboxyanhydrides, Lactides, Lactones and Lactams
Free Radical Polymerisation
Anionic Polymerisation of styrene, (meth)acrylates and dienes
Cationic Polymerisation
Catalytic Chain Transfer Polymerisation (CCTP)
Condensation Polymerisation of polyesters, polyamides and polyurethanes
Transesterification
Hydroboration-Oxidation
Supercritical CO2 polymer processing
Composite Manufacture
Chemical Kinetics
Thermodynamics

Analytical Techniques
Fourier Transform-Nuclear Magnetic Resonance (FT-NMR)
[NMR Techniques: 1H, 31P, 19F and 13C, COSY, NOESY, ROESY, DEPT, HSQC, HMBC]
Circular Dichroism Spectroscopy (CD)
Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry (MALDI-TOF MS)
Electrospray Ionization-Time of Flight Mass Spectrometry (ESI-MS)
Gas Chromatography-Mass Spectrometry (GC-MS)
High Performance Liquid Chromatography (HPLC)
Size-Exclusion Chromatography (SEC)
Multiangle Laser Light Scattering (MALLS)
Dynamic Light Scattering (DLS)
Online Viscometry
Thin Layer Chromatography (TLC)
Electrophoresis
Measuring dielectric properties using Coaxial Probes as well as Resonant Cavities
Scanning Electron Microscopy (SEM)
Transmission Electron Microscopy (TEM)
Fourier Transform-Infrared Spectroscopy (FT-IR)
Ultraviolet-Visible Spectroscopy (UV-Vis)
X-ray Diffraction (XRD)
Energy-dispersive X-ray spectroscopy (EDX)
Rheometry
Differential Scanning Calorimetry (DSC)
Thermal Gravimetric Analysis (TGA)
Dynamic Mechanical Analysis (DMA)
Potentiometry
Impedance spectroscopy
Melting point measurement.
Software Skills
ACDlabs
Agilent OpenLAB Software Suite
AutoCAD
Axiovision
Bruker TopSpin
Chemdraw
Chem3d
Endnote
Mestrenova
Microsoft Office
Matlab
Maple
OriginPro
Predici
Refworks
VNMRJ
Wyatt ASTRA

I am familiar with the following social media:
Researchgate
Dropbox
gmail
Skype
Facebook
I have a sound knowledge of computer hardware and adapt to new software quite readily.

Other Skills
Numerical modelling of partial differential equations
Continuum Mechanics and Rheology
Electricity and Magnetism


References:
Name: Professor Derek J. Irvine
Position: Professor of Materials Chemistry, Additive Manufacturing Research Group, Department of Chemical and Environmental Engineering, University of Nottingham.
Telephone: +44 (0) (concealed information)
Email: (concealed information)
Address: B08, Coates Building
The University of Nottingham
University Park
Nottingham
NG7 2RD
United Kingdom

Name: Professor Davide De Focatiis
Position: Associate Professor Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham.
Telephone: +44 (0)115 95 14097
Email: (concealed information)
Address: B103, Coates Building
The University of Nottingham
University Park
Nottingham
NG7 2RD
United Kingdom

Name: Professor Bert Klumperman
Position: Professor, Research Chair on Advanced Macromolecular Architectures, Supervisor for my PhD.
Telephone: (+27)21 808 3988
(+27)79 351 1735
Email: (concealed information)
Address: Department of Chemistry & Polymer Science
Polymer Science Building
De Beers Street
Stellenbosch
7600
Western Cape
South Africa

Name: Dr. Ivan Green
Position: Lecturer
Telephone: (+27)21 808 3357
Email: (concealed information)
Address: Department of Chemistry & Polymer Science
De Beers Building
De Beers Street
Stellenbosch
7600
Western Cape
South Africa

Name: Professor Leslie Petrik
Position: Lecturer, Head of the Environmental Nanosciences Group at the University of the Western Cape, Supervisor for my MSc.
Telephone: (+27)21 959 3304
Email: (concealed information)
Address: University of the Western Cape
Department of Chemistry
Robert Sobukwe Road
Bellville
7535
Western Cape
South Africa

Hobbies and Interests:
I enjoy reading and watching fantasy and science fiction. I enjoy listening to alternative, rock and classical music although I keep an open mind with regards to pop music. I am learning to play the drums. I love the outdoors and participating in sports. I’m especially fond of watersports such as kitesurfing, windsurfing, wakeboarding, water skiing and swimming. I also enjoy horse riding and snowboarding. I dabble in amateur aeronautics including constructing model kites, aeroplanes and amateur rockets. I enjoy travelling, learning new languages and experiencing different cultures.

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