Dr Oleksandr O. Mykhaylyk
School of Mathematical and Physical Sciences
Senior Research Fellow in Crystallisation
+44 114 222 9418
Full contact details
School of Mathematical and Physical Sciences
Dainton Building
13 Brook Hill
91直播
S3 7HF
- Profile
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Dr. Sasha Mykhaylyk obtained his MSc in Physics (optics and spectroscopy) from Taras Shevchenko Kiev State University in 1991 (Diploma with distinction was awarded on graduation). After obtaining a PhD in solid state physics and crystallography from the Institute for Problems of Materials Science (the Ukrainian Academy of Sciences) in 1996, he became a Research Scientist at the same institute where he was later promoted to a Senior Scientist.
After holding Royal Society/NATO Fellowship at the University of Cambridge in 2000-2001 he joined the University of Leeds in 2002 as a Research Associate. He moved to the University of 91直播 in 2004 where he was promoted to a Research Fellow in 2011 and Senior Research Fellow in 2017.
- Research interests
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Scattering methods
Much of my research focuses on the structural analysis of soft matter materials and in particular polymers. We live in a Golden age of Materials Science and Biology, based on a solid underpinning from Chemistry and Physics. One of the keys to this success is recent progress in structural characterization techniques where scattering methods, giving access to structural organization of matter from atomic scales to microns, occupy a dominating role. Experimental data obtained by scattering methods (SAXS, WAXS, XRD, SANS and SLS) provide structural information associated with Fourier space.
My research investigates how this information can be transformed into real space, convenient for our understanding. This involves structural modelling, Monte-Carlo simulations and Fourier transformation techniques. An advantage of scattering methods is that they can be used for kinetic studies of materials in-situ in different environments. Therefore, an other aspect of my work is design of dedicated experimental set-ups for studying materials under external impact such as shear flow or extensional flow, temperature or pH changes.
I have a continuous interest in fat crystallization, colloids and nanoparticles structure, in particular core-shell systems (examples of my research are nanodiamonds to carbon onions transition, a phase separation of polyurethane confined by a nanosized spherical shell). My current research is on thermo-responsive block-copolymer micelles and vesicles.
Mechano-optical Rheology
Rheology is widely recognized as a basic method in processing of polymers, food and cosmetics. In addition, visualization can be used as an effective tool for studying phenomena taking place in fluids. Since soft matter materials subjected to flow often demonstrate a related anisotropy in their refractive index and stress, this causes birefringence visualizing the flow. I have recently developed a new combinatorial technique, shear-induced polarized light imaging (SIPLI), for rheo-optical measurements of polymeric liquids.
The SIPLI technique has already been successfully used for studying shear-induced nucleation and crystallization of polyolefins (see the figure), fibrillation in natural silks and flow alignment of block-copolymer self-assembled structures. My present research focuses on further development of SIPLI for in-situ studies of shear-induced phenomena such as stress, orientation and structural transitions taking place in gels, polymers, copolymers, liquid crystals and colloids.
Polymer Crystallization
Microstructure of solidified polymers depends on thermo-mechanical process history. In general, processed thermoplastics are composed of two structural morphologies: spherulitic (isotropic) and shish-kebab (anisotropic). Ratio of these morphologies in the end-product controls its mechanical properties and material performance.
While spherulitic structure is reasonably understood there is still no a reliable theory for structural formation of shear-induced shish-kebabs. My work is on physical understanding of how the formation of shear-induced morphologies is related to polymer polydispersity, thermodynamics and flow conditions. Based on our research we have proposed a four-stage model for shish-kebab formation including stretching of molecules, nucleation, aggregation and fibrillation.
- Publications
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Journal articles
- . Polymer, 283, 126205-126205.
- . Solar Energy Materials and Solar Cells, 256, 112322-112322.
- . Biomacromolecules.
- . Macromolecular Chemistry and Physics, 224(10).
- . Macromolecular Chemistry and Physics, 224(3).
- . Fuel, 327, 125042-125042.
- . Macromolecules, 55(21), 9726-9739.
- . IUCrJ, 9(5).
- . ACS Sustainable Chemistry & Engineering, 9(47), 15780-15792.
- . Soft Matter.
- . Polymer.
- . Journal of Colloid and Interface Science.
- . Angewandte Chemie.
- . npj 2D Materials and Applications, 5(1).
- . Nature Communications, 11(1).
- . Chemical Science.
- . Biomacromolecules, 21(6), 2285-2297.
- . Scientific Data, 7(1).
- . Soft Matter, 16(15), 3657-3668.
- . Chemical Science, 11(17), 4312-4321.
- . Polymer Chemistry.
- . Langmuir, 36(3), 769-780.
- . Chemical Science, 11(2), 396-402.
- . Communications Chemistry, 2(1).
- . Nature Communications, 10(1).
- . Journal of the American Chemical Society.
- . Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 475(2226).
- . Chemical Science, 10(18), 4811-4821.
- . Chemical Science, 10(3), 947-947.
- . Crystal Growth and Design, 18(11), 7094-7105.
- . Macromolecules, 51(21), 8357-8371.
- . European Journal of Lipid Science and Technology, 120(9).
- . Acta Crystallographica Section A Foundations and Advances, 74(a2), e257-e257.
- . Chemical Science, 9(17), 4071-4082.
- . Macromolecules.
- . Langmuir, 33(46), 13303-13314.
- . Macromolecules, 50(11), 4465-4473.
- . Chemistry of Materials, 29(7), 3100-3110.
- . Macromolecules, 50(3), 796-802.
- . Langmuir.
- . Angewandte Chemie, 129(7), 1772-1776.
- . Angewandte Chemie International Edition, 56(7), 1746-1750.
- . Journal of Polymer Science Part B: Polymer Physics, 55(2), 214-214.
- . Macromolecules, 49(20), 7897-7907.
- . Journal of Polymer Science Part B: Polymer Physics, 54(21), 2151-2170.
- . Macromolecules, 49(18), 6731-6742.
- . Macromolecules.
- . Chem. Commun., 52(42), 6934-6937.
- . Chemical Science, 7, 5078-5090.
- . Macromolecules, 49(1), 172-181.
- . Journal of the American Chemical Society, 137(51), 16098-16108.
- . Scientific Reports, 5(1).
- . Langmuir, 31(38), 10358-10369.
- . Langmuir, 31(32), 8764-8773.
- . Macromolecular Rapid Communications, 36(15), 1452-1452.
- . Macromolecules, 48(11), 3547-3555.
- . Journal of the American Chemical Society, 137(5), 1929-1937.
- . Macromolecules, 48(11), 3691-3704.
- Framboidal triblock copolymer vesicles: A new class of efficient Pickering emulsifier. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 248.
- . Journal of the American Chemical Society, 136(31), 11100-11106.
- . Langmuir, 30(21), 6047-6056.
- . J Am Chem Soc, 136(15), 5790-5798.
- . Soft Matter, 10(22), 3984-3992.
- . Chemistry of Materials, 26(2), 1270-1277.
- . J Am Chem Soc, 136(3), 1023-1033.
- . Phys Rev Lett, 110(8), 087801.
- . J Am Chem Soc, 134(23), 9741-9748.
- . Langmuir, 28(5), 2536-2544.
- . Advanced Materials, 24(1), 104-104.
- . Macromolecules, 45(12), 5260-5272.
- . Advanced Materials, 24(1), 105-109.
- Correcting for a density distribution: Particle size analysis of core-shell nanocomposite particles using disc centrifuge photosedimentometry. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 242.
- . Langmuir, 27(13), 8075-8089.
- . J POLYM SCI POL PHYS, 49(9), 621-628.
- . J Chem Phys, 134(9), 094901.
- . Phys Chem Chem Phys, 13(8), 3179-3186.
- . MACROMOLECULES, 44(16), 6503-6508.
- . Macromolecules, 44(7), 1783-1787.
- . SOFT MATTER, 7(8), 3721-3725.
- . European Polymer Journal, 47(4), 447-464.
- . J Am Chem Soc, 133(4), 826-837.
- . Macromolecules, 43(5), 2389-2405.
- . J Am Chem Soc, 132(7), 2166-2168.
- . Soft Matter, 6(18), 4430-4440.
- Monodisperse macromolecules - A stepping stone to understanding industrial polymers. European Polymer Journal.
- Polymersomes hydrophilic brush scaling relations. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 237.
- . European Journal of Lipid Science and Technology, 111(3), 227-235.
- . SOFT MATTER, 5(19), 3607-3610.
- . Macromolecules, 41(6), 1901-1904.
- . IEEE Transactions on Nuclear Science, 55(2), 729-733.
- . ADV MATER, 19(21), 3544-+.
- . J Am Chem Soc, 129(6), 1717-1723.
- . IEEE Nuclear Science Symposium Conference Record, 4, 2416-2420.
- POLY 288-Monodisperse three-phase particles from micellar nanoreactors. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 232.
- . MACROMOLECULES, 39(16), 5573-5576.
- . Powder Metallurgy and Metal Ceramics, 45(1-2), 86-92.
- . Journal of Applied Physics, 97(7).
- . Journal of Physical Chemistry B, 108(23), 8069-8083.
- . Journal of Applied Crystallography, 37(2), 341-344.
- . Macromolecules, 37(9), 3369-3377.
- . European Journal of Lipid Science and Technology, 106(5), 319-324.
- . Langmuir, 20(25), 10785-10790.
- . Biomacromolecules, 4(4), 859-863.
- Phase formation and structure of bronze-iron-graphite composite powder material during hot forming. POWDER METALLURGY AND METAL CERAMICS, 41(7-8), 424-429.
- . Chemistry of Materials, 14(3), 1348-1353.
- . Technical Physics, 46(8), 968-976.
- . Refractories and Industrial Ceramics, 42(11/12), 429-433.
- . Refractories and Industrial Ceramics, 42(1/2), 11-14.
- . Powder Metallurgy and Metal Ceramics, 40(9/10), 519-525.
- . Journal of Materials Chemistry, 11(1), 217-222.
- High-pressure sintering of a solid solution of carbon in SiC. INORGANIC MATERIALS, 35(10), 1054-1059.
- . Powder Metallurgy and Metal Ceramics, 38(7-8), 336-339.
- . Acta Crystallographica Section B: Structural Science, 55(3), 297-305.
- Synthesis and structural peculiarities of nonstoichiometric beta-SiC. DIAM RELAT MATER, 7(10), 1466-1470.
- Solid solution of carbon in beta-SiC. MATER LETT, 35(5-6), 277-282.
- . Powder Metallurgy and Metal Ceramics, 34(9-10), 513-514.
- PHASE STATE AND CRYSTAL-STRUCTURE OF PRODUCTS OBTAINED BY REACTION OF SIC WITH SIO2. INORGANIC MATERIALS, 31(3), 304-309.
- . Macromolecules.
- . Macromolecules.
- . Angewandte Chemie.
- . Angewandte Chemie International Edition.
- . Langmuir.
- . Macromolecules.
- . Polymer Chemistry, 13(5), 655-667.
- . Chemical Science.
- . Soft Matter.
- . Polymer Chemistry.
- . Angewandte Chemie International Edition.
- . Langmuir.
- . Plant Physiology, pp.01049.2020-pp.01049.2020.
- . Chemical Science, 9(6), 1454-1463.
- . Chemical Science, 6(7), 4207-4214.
- . Polym. Chem., 5(21), 6307-6317.
- . Chemical Science, 6(11), 6179-6188.
- X-ray Ptychography with a Laboratory Source.
- . Macromolecules.
Conference proceedings papers
- Flow-induced crystallisation of polymers. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 257
- How do diblock copolymer micelles form during polymerization-induced self-assembly?. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 258
- How does end-group charge on the steric stabilizer block affect the formation and stability of Pickering nanoemulsions prepared using diblock copolymer nanoparticles?. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 258
- Magnetite-loaded biocompatible diblock copolymer vesicles. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 258
- Tuning composition and hydrophobicity of ionic statistical amphiphilic copolymers to control and predict copolymer particle size. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 258
- Control of self-assembly of amphiphilic statistical copolymers by their composition. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 255
- Semi-crystalline block copolymers as fat crystal habit modifiers. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 255
- Fabricating millifluidic devices for SAXS/WAXS using 3D printing; a quick and inexpensive method to exploit many geometries. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 255
- Adsorption of small cationic nanoparticles onto large anionic particles from aqueous solution: A model system for understanding pigment dispersion and the problem of effective particle density. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 255
- Using time-resolved small-angle X-ray scattering to study micellar nucleation during polymerization-induced self-assembly. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 255
- UCST-type behavior of poly(behenyl methacrylate)-stabilized nanoparticles in mineral oil dictates their degree of dispersion. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 254
- Effect of monomer solubility on the evolution of copolymer morphology during polymerization-induced self-assembly in aqueous solution. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 253
- Time-resolved small-angle x-ray scattering studies of the micellar nucleation event during polymerization-induced self-assembly. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 253
- Shear-induced alignment of diblock copolymer worm gels. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 253
- How do spherical diblock copolymer nanoparticles grow during RAFT alcoholic dispersion polymerization?. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 251
- Framboidal triblock copolymer vesicles: A new class of efficient Pickering emulsifier. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 250
- In situ SAXS studies of polymerization-induced self-assembly during non-aqueous RAFT dispersion polymerization. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 250
- Star diblock copolymer concentration dictates the degree of dispersion of carbon black particles in nonpolar media: Bridging flocculation vs. steric stabilization. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 250
- Testing the vesicular morphology to destruction: Birth and death of diblock copolymer vesicles prepared via polymerization-induced self-assembly. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 250
- pH-Responsive framboidal vesicles prepared using polymerization-induced self-assembly via RAFT aqueous dispersion polymerization as virus mimics. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 250
- Testing vesicles to destruction: SAXS and mass spectrometry studies on block copolymer vesicles prepared via polymerization-induced self-assembly. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 248
- Bespoke poly(ethylene glycol)-based diblock copolymer nano-objects via polymerization-induced self-assembly. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 248
- Thermo-responsive diblock copolymer worm gels with tunable critical gelation temperature. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 248
- Visible Mie scattering from hollow silica particles with particulate shells. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 248
- . AIP Conference Proceedings, Vol. 1027 (pp 496-498)
- . Journal of Applied Crystallography, Vol. 40(SUPPL. 1)
- . Journal of Applied Crystallography, Vol. 40(SUPPL. 1)
- Biomimetic hierarchical order in PEG-peptide block copolymers. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 227 (pp U518-U518)
- Nanoscale structure of Poly(Ethylene Glycol) hybrid block copolymers containing amphiphilic 尾-strand peptide sequences. European Cells and Materials, Vol. 6(SUPPL. 1) (pp 101)
Datasets
Preprints
- Teaching activities
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Undergraduate and postgraduate taught modules
- Polymer Characterisation and Analysis (Postgraduate Level)
This course explores the major instrumental methods for identifying polymers and determining characteristics including: polymer molecular weight, molecular weight distribution, stereochemistry, sequence distribution in copolymers, transition temperatures, and surface features.
Laboratory Teaching:
- Level 4 Research Project
- Polymer Characterisation and Analysis (Postgraduate Level)