Andriy Gryshchenko
Brampton,ON
Summary
Synthesis and Processes. New Product Development based on biomaterials for Coatings and Adhesives. Formulation. Lean Six Sigma. Experienced Senior Chemist and laboratory manager with good team leadership, problem-solving and project management skills. Independently develops and validates chemistry test methods. Specializing in [Area of expertise] within [Industry].
Overview
14
14
years of professional experience
Work History
Senior Chemist, R&D
Evoco Ltd
11.2022 - Current
- Produce polyurethane foams (high rebound, flexible, memory) for textile and automotive applications: insoles, sheets, pads, molded parts
- Objective: increase bio-based content and reduce density (more lightweight products) while keeping physical properties to the customers’ requirements
- Provide technical service to support manufacturing foam products in Vietnam
- Objective: improve consistency between product batches and solve foam defects
- Optimize process-related aspects of foam product development: mixing efficiency, dispersing fillers, timing, control of temperatures, cream time, and viscosities
- Source bio-based polymers, fillers, and additives to reduce cost and improve sustainability profile (bio-carbon, toxicity)
- Chemical processing of bio-polymer to produce component for polyurethane foams.
Senior Polymer Chemist, R&D
Lorama Group
02.2015 - 11.2022
- Synthesis of polyol resins (through thermal solution polymerization), polyurethane water based dispersions (polyol isocyanate reaction), alkyd resins (esterification), modified natural oils (epoxide ring opening, Diels-Alder Reaction), polyurethane silicone block copolymers (grafting)
- Chemical modification of polysaccharides in water (oxidation, esterification, hydrolysis)
- Selection of catalysts for the above reactions
- Developed a wide variety of cross-linking reactions (isocyanate, epoxy, metal complexing, special types of nucleophilic addition) between bio-polymers (polysaccharides, proteins, modified oils)
- Objective: modify water resistance and swelling behavior of formulations for applications in adhesives and temporary coatings
- Design and optimization of synthetic processes with the focus on avoiding the use of organic solvents, reducing the number of steps, reducing the need for purification, fixing product’s color and clarity, and improving process robustness
- Chemical functionalization and modification of biomaterials: carbohydrates, chitosan, proteins and plant oils for application in adhesives and temporary coatings
- Reactions to crosslink plant-based polymers to modify their water resistance and swelling behavior (with specialty, metal, formaldehyde and isocyanate-free cross-linkers)
- Cooperation with Operations and toll manufactures to scale up manufacturing of new additives (50, 200 kg) (production through blending and synthesis)
- Working with mixing equipment (high-speed disperser, bead mill, Hoc Mayer grinder) to prepare pigment dispersions, paints, and additives
- Project work and problem solving based on data analysis and Six Sigma principles: project charter, identifying project scope, analysis of Voice of the Customer, benchmarking, prioritization tools, root cause analysis, and Design of Experiment (DOE)
- Design of SOPs based on chromatography, spectroscopy, mechanical and destructive analysis.
PhD Researcher (Polymers, Analytical Chemistry)
Memorial University
01.2010 - 10.2014
- Synthesized polymeric materials through different polymerization techniques (UV, bulk, precipitation) based on vinyl and acrylic monomers
- Synthesized silver and gold nanoparticles to be used as a SERS sensing substrate
- Developed molecularly imprinted polymers for adsorption of phenols from water
- Fabricated polymeric films with porous and mechanically stable morphology using the “sandwich” approach, solvent-casting, and membrane sheets
- Application: microfluidic devices and substrates for direct sensing in water
- Adapted HPLC, mass spectrometry (ESI, APCI, DESI), fluorescence spectroscopy, Raman microscopy for direct sensing phenols and PAHs on the surface of polymeric films.
Education
MSc. - Analytical Chemistry
Odessa National University
BSc. - Chemistry/Education
Odessa National University
Ph.D. - Polymers/Analytical Chemistry
Memorial University
St. John’s, NL10.2014
Skills
- Teaching and Mentoring
- Collaborative Research
- Scientific Presentations
- Chromatography Techniques
Websites
Timeline
Senior Chemist, R&D
Evoco Ltd
11.2022 - Current
Senior Polymer Chemist, R&D
Lorama Group
02.2015 - 11.2022
PhD Researcher (Polymers, Analytical Chemistry)
Memorial University
01.2010 - 10.2014
MSc. - Analytical Chemistry
Odessa National University
BSc. - Chemistry/Education
Odessa National University
Ph.D. - Polymers/Analytical Chemistry
Memorial University