Vyazovkin, Sergey

Vyazovkin, Sergey
Professor

Scientist (C), Biomatrix Eng Regen Med (BERM) Center , Biomedical Engineering 2008 -
Scientist (C), Center for Biophysical Sciences and Engineering (CBSE) , School of Optometry 2008 -
Professor (P), Chemistry , College of Arts and Sciences 2011 -

Overview

Prof. Vyazovkin graduated with honors from Belarusian State University. He then joined the Institute for Physical Chemistry (Minsk) where he worked until 1993. Since 1993 he had held visiting positions at the Technical University of Vienna (1993-1995) and University of Toledo (1995).

Before joining the University of Alabama at Birmingham, he worked in the University of Utah (1995-2001) as a research faculty and the deputy director of the Center for Thermal Analysis.

Selected Publications

Academic Article

Year	Title	Altmetric
2019	Crystallization of ammonium perchlorate from solution confined to native and organically modified silica nanopores 2019
2019	Kinetic and Mechanistic Insights into Thermally Initiated Polymerization of Cyanate Esters with Different Bridging Groups 2019
2019	Thermal stability of indomethacin increases with the amount of polyvinylpyrrolidone in solid dispersion 2019
2019	All you need to know about the kinetics of thermally stimulated reactions occurring on cooling 2019
2019	Accelerating Effect of Poly(vinylpyrrolidone) Matrix on Thermal Decomposition of Malonic Acid 2019
2019	Is the kinetics of crosslinking polymerization the same on heating and cooling? 2019
2019	Effect of Inert Gas Pressure on Reversible Solid-State Decomposition 2019
2019	“Nothing Can Hide Itself from Thy Heat”: Understanding Polymers via Unconventional Applications of Thermal Analysis 2019
2018	Gelation of poly(vinylidene fluoride) solutions in native and organically modified silica nanopores 2018
2018	Polyvinylpyrrolidone affects thermal stability of drugs in solid dispersions 2018
2018	Power Law and Arrhenius Approaches to the Melting Kinetics of Superheated Crystals: Are They Compatible? 2018
2018	Thermal Stability of Malonic Acid Dissolved in Poly(vinylpyrrolidone) and Other Polymeric Matrices 2018
2018	Effect of nanocrystalline cellulose addition on needleless alternating current electrospinning and properties of nanofibrous polyacrylonitrile meshes 2018
2018	Kinetics of Thermal Polymerization Can Be Studied during Continuous Cooling 2018
2017	Phase separation of triethylamine and water in native and organically modified silica nanopores 2017
2017	Delving into the Kinetics of Reversible Thermal Decomposition of Solids Measured on Heating and Cooling 2017
2017	Thermal Decomposition Kinetics of Malonic Acid in the Condensed Phase 2017
2017	Thermal Reduction of NOx with Recycled Plastics 2017
2017	Isoconversional Kinetics of Polymers: The Decade Past 2017
2017	Further insights into the kinetics of thermal decomposition during continuous cooling 2017
2017	Melting kinetics of superheated crystals of glucose and fructose 2017
2017	The truncated Šesták–Berggren equation is still the Šesták–Berggren equation, just truncated 2017
2016	Crystallization of ionic salts for calibration of differential scanning calorimeters 2016
2016	Isoconversional Kinetics of Nonisothermal Crystallization of Salts from Solutions 2016
2016	A time to search: Finding the meaning of variable activation energy 2016
2016	Discovering the kinetics of thermal decomposition during continuous cooling 2016
2016	Melting of gelatin gels confined to silica nanopores 2016
2015	Nanoconfined solid-solid transitions: Attempt to separate the size and surface effects 2015
2015	The kinetics and mechanism of nanoconfined molten salt reactions: Trimerization of potassium and rubidium dicyanamide 2015
2014	Coil-to-Globule Transition of Poly(N-isopropylacrylamide) in Aqueous Solution: Kinetics in Bulk and Nanopores 2014
2014	ICTAC Kinetics Committee recommendations for collecting experimental thermal analysis data for kinetic computations 2014
2014	Venturing into kinetics and mechanism of nanoconfined solid-state reactions: Trimerization of sodium dicyanamide in nanopores 2014
2014	Melting of gelatin gels containing laponite, montmorillonite, and chitosan particles 2014
2014	Polymer melting kinetics appears to be driven by heterogeneous nucleation 2014
2013	Nucleation-driven kinetics of poly(ethylene terephthalate) melting 2013
2013	Improvement of quality in publication of experimental thermophysical property data: Challenges, assessment tools, global implementation, and online support 2013
2013	High temperature solid-solid transition in ammonium chloride confined to nanopores 2013
2013	Dynamic mechanical analysis and hydrolytic degradation behavior of linear and branched poly(L-lactide)s and poly(L-lactide-co-glycolide)s 2013
2013	New procedures for articles reporting thermophysical properties 2013
2013	Loading salts from solutions into nanopores: Model and its test 2013
2012	Atypical gelation in gelatin solutions probed by ultra-fast calorimetry 2012
2012	Thermal properties and degradation behavior of linear and branched poly(L-lactide)s and poly(L-lactide-co-glycolide)s 2012
2012	Gelation on heating of supercooled gelatin solutions 2012
2011	Non-oxidative thermal degradation of poly(glycidol), poly(glycidol)-g-L- lactide, and poly(glycidol)-g-glycolide 2011
2011	Activation energies of water vaporization from the bulk and from laponite, montmorillonite, and chitosan powders 2011
2011	Notes on workshop on kinetics/ESTAC-10, Rotterdam 2011
2011	Dr. Joseph Henry Flynn Obituary 2011
2011	New procedures for articles reporting thermophysical properties 2011
2011	ICTAC Kinetics Committee recommendations for performing kinetic computations on thermal analysis data 2011
2010	Thermal analysis 2010
2010	Making impact in thermal sciences: Overview of highly cited papers published in Thermochimica Acta 2010
2009	Thermal stability of gelatin gels: Effect of preparation conditions on the activation energy barrier to melting 2009
2009	Temperature dependence of sol-gel conversion kinetics in gelatin-water system 2009
2009	Implications of global and local mobility in amorphous sucrose and trehalose as determined by differential scanning calorimetry 2009
2009	Isoconversional Kinetics of Glass Aging 2009
2009	Concentration effect on temperature dependence of gelation rate in aqueous solutions of methylcellulose 2009
2009	Joint statement of editors of journals publishing thermophysical property data 2009
2008	Formation and thermal behavior of polystyrene and polystyrene/clay gels 2008
2008	Ammonium nitrate-polymer glasses: A new concept for phase and thermal stabilization of ammonium nitrate 2008
2008	Isoconversional kinetics of degradation of polyvinylpyrrolidone used as a matrix for ammonium nitrate stabilization 2008
2008	Thermal analysis 2008
2008	Phase and thermal stabilization of ammonium nitrate in the form of PVP-AN glass 2008
2008	Chapter 13 Isoconversional kinetics 2008
2007	Tacticity as a factor contributing to the thermal stability of polystyrene 2007
2007	Increase in effective activation energy during physical aging of a glass 2007
2007	Thermal denaturation of collagen analyzed by isoconversional method 2007
2007	Nanoconfinement revealed in degradation and relaxation studies of two structurally different polystyrene-clay systems 2007
2007	Effect of physical aging on nucleation of amorphous indomethacin 2007
2007	Effect of substituents in aromatic amines on the activation energy of epoxy-amine reaction 2007
2007	Viscoelastic properties of crosslinked LLDPE films biaxially oriented at temperatures below melting point 2007
2006	Thermal analysis (vol 78, pg 3875, 2006) 2006
2006	Isoconversional kinetic analysis of thermally stimulated processes in polymers 2006
2006	PMSE 574-Biodegradable epoxy networks cured with polypeptides 2006
2006	Comparative cure behavior of DGEBA and DGEBP with 4-nitro-1,2-phenylenediamine 2006
2006	Comparative relaxation dynamics of glucose and maltitol 2006
2006	Variation in activation energy of the glass transition for polymers of different dynamic fragility 2006
2006	Activation energies derived from the pre-glass transition annealing peaks 2006
2006	Thermal analysis 2006
2006	Effect of pressure and sample type on decomposition of ammonium perchlorate 2006
2006	Enhanced intermolecular interaction in polystyrene-clay brush and its effect on relaxation dynamics and degradation mechanism 2006
2006	Preparing students for a successful research experience throughout the undergraduate curriculum 2006
2006	Mechanistic differences in degradation of polystyrene and polystyrene-clay nanocomposite: Thermal and thermo-oxidative degradation 2006
2006	Probing beta relaxation in pharmaceutically relevant glasses by using DSC 2006
2006	Isoconversional analysis of combined melt and glass crystallization data 2006
2006	Model-free kinetics: Staying free of multiplying entities without necessity 2006
2005	Mechanochemical effects in degradation of nitrocellulose and nitrocellulose-diphenylamine mixture 2005
2005	Physical stability and relaxation of amorphous indomethacin 2005
2005	Curing of diglycidyl ether of 4,4′-bisphenol P with nitro derivatives of amine compounds, 3 2,4-dinitroaniline 2005
2005	Curing of diglycidyl ether of bisphenol P with nitro derivatives of amine compounds, 2 3-nitro-1,2-phenylenediamine 2005
2005	Effect of the brush structure on the degradation mechanism of polystyrene-clay nanocomposites 2005
2005	Hoffman-Lauritzen parameters for non-isothermal crystallization of poly(ethylene terephthalate) and poly(ethylene oxide) melts 2005
2005	Curing of diglycidyl ether of bisphenol P with nitro derivatives of amine compounds, 1 4-nitro-1,2-phenylenediamine 2005
2005	Detecting mechanochemical degradation of nitrocellulose by combining dynamic mechanical analysis with mass spectrometry 2005
2004	Variation of the effective activation energy throughout the glass transition 2004
2004	A DSC study of α- and β-relaxations in a PS-clay system 2004
2004	Degradation and relaxation kinetics of polystyrene-clay nanocomposite prepared by surface initiated polymerization 2004
2004	Thermal analysis 2004
2004	Isoconversional approach to evaluating the Hoffman-Lauritzen parameters (U* and Kg) from DSC data on nonisothermal melt crystallization. 2004
2004	Kinetics of degradation and relaxation of polystyrene clay nanocomposite. 2004
2004	Isoconversional approach to evaluating the Hoffman-Lauritzen parameters (U* and Kg) from the overall rates of nonisothermal crystallization 2004
2004	Kinetics of the thermal and thermo-oxidative degradation of a polystyrene-clay nanocomposite 2004
2003	Kinetics of Epoxy-Amine Curing Accompanied by the Formation of Liquid Crystalline Structure 2003
2003	A Study of Epoxy-Amine Cure Kinetics by Combining Isoconversional Analysis with Temperature Modulated DSC and Dynamic Rheometry 2003
2003	Crystallization kinetics of amorphous nifedipine studied by model-fitting and model-free approaches 2003
2003	Estimating the activation energy for non-isothermal crystallization of polymer melts 2003
2003	Model-free treatment of the dehydration kinetics of nedocromil sodium trihydrate 2003
2003	Reply to "What is meant by the term 'variable activation energy' when applied in the kinetics analyses of solid state decompositions (crystolysis reactions)?" 2003
2003	Isoconversional analysis of calorimetric data on nonisothermal crystallization of a polymer melt 2003
2002	Evaluation of the dynamic response of a new heat flux calorimeter for kinetic purposes 2002
2002	Is the Kissinger equation applicable to the processes that occur on cooling? 2002
2002	Isoconversional analysis of the nonisothermal crystallization of a polymer melt 2002
2002	Some confusion concerning integral isoconversional methods that may result from the paper by Budrugeac and Segal "some methodological problems concerning nonisothermal kinetic analysis of heterogeneous solid-gas reactions" 2002
2002	Learning about epoxy cure mechanisms from isoconversional analysis of DSC data 2002
2002	Thermal analysis 2002
2002	Dehydration kinetics of neotame monohydrate 2002
2002	Hard to swallow dry: Kinetics and mechanism of the anhydrous thermal decomposition of acetylsalicylic acid 2002
2002	Kinetics of thermally stimulated reactions: A collection of invited papers in honor of Dr. A.K. Galwey and Prof. M.E. Brown on the occasion of their respective 70th and 65th birthdays 2002
2001	Two types of uncertainty in the values of activation energy 2001
2001	Thermal dissociation kinetics of solid and liquid ammonium nitrate 2001
2001	Hard to swallow dry: Formation of linear and cyclic oligomers in the anhydrous thermal decomposition of acetylsalicylic acid 2001
2001	Kinetics of the thermal and thermo-oxidative degradation of polystyrene, polyethylene and poly(propylene) 2001
2001	Comments on "The use of MoO3 and NiO (pure or mixed) oxide catalysts in the decomposition of KMnO4" by S.A. Halawy and M.A. Mohamed 2001
2001	Hard to swallow dry: New insights for the anhydrous decomposition of acetylsalicylic acid. 2001
2001	Learning about epoxy cure mechanisms from kinetic analysis of DSC data. 2001
2001	Modification of the Integral Isoconversional Method to Account for Variation in the Activation Energy 2001
2000	On the phenomenon of variable activation energy for condensed phase reactions 2000
2000	Comparison of several computational procedures for evaluating the kinetics of thermally stimulated condensed phase reactions 2000
2000	Electronic solution to the problem of a kinetic standard for DSC measurements 2000
2000	Computational aspects of kinetic analysis Part A: The ICTAC Kinetics Project-data, methods and results 2000
2000	Computational aspects of kinetic analysis. Part C. The ICTAC Kinetics Project - The light at the end of the tunnel? 2000
2000	Estimating realistic confidence intervals for the activation energy determined from thermoanalytical measurements 2000
2000	Thermal decomposition of a high explosive: Competitive vaporization and decomposition of liquid RDX. 2000
2000	Competitive Vaporization and Decomposition of Liquid RDX 2000
2000	Thermomechanical study of the high temperature phase transition in KH2PO4 2000
2000	Effect of viscosity on the kinetics of initial cure stages 2000
2000	Kinetic analysis of isothermal cures performed below the limiting glass transition temperature 2000
2000	Kinetic concepts of thermally stimulated reactions in solids: A view from a historical perspective 2000
1999	Model-free and model-fitting approaches to kinetic analysis of isothermal and nonisothermal data 1999
1999	Kinetic methods to study isothermal and nonisothermal epoxyanhydride cure 1999
1999	Stabilizing effect of oxygen on thermal degradation of poly(methyl methacrylate) 1999
1999	Thermal decomposition kinetics of PBAN-binder and composite solid rocket propellants 1999
1999	Kinetic study of stabilizing effect of oxygen on thermal degradation of poly(methyl methacrylate) 1999
1999	Isoconversional method to explore the mechanism and kinetics of multi-step epoxy cures 1999
1999	Kinetics of thermal decomposition of cubic ammonium perchlorate 1999
1998	Isothermal and non-isothermal kinetics of thermally stimulated reactions of solids 1998
1997	Advanced isoconversional method 1997
1997	Confidence intervals for the activation energy estimated by few experiments 1997
1997	Isothermal and nonisothermal reaction kinetics in solids: In search of ways toward consensus 1997
1997	Thermal decomposition of ammonium dinitramide at moderate and high temperatures 1997
1997	Ammonium dinitramide: Kinetics and mechanism of thermal decomposition 1997
1997	Evaluation of activation energy of thermally stimulated solid-state reactions under arbitrary variation of temperature 1997
1997	Kinetics in Solids 1997
1996	Mechanism and kinetics of epoxy-amine cure studied by differential scanning calorimetry 1996
1996	A unified approach to kinetic processing of nonisothermal data 1996
1996	Linear and nonlinear procedures in isoconversional computations of the activation energy of nonisothermal reactions in solids 1996
1995	Detecting isokinetic relationships in non-isothermal systems by the isoconversional method 1995
1995	Thermally induced reactions of solids:Isokinetic relationships of non-isothermal systems 1995
1995	False isokinetic relationships found in the nonisothermal decomposition of solids 1995
1995	The application of isoconversional methods for analyzing isokinetic relationships occurring at thermal decomposition of solids 1995
1995	Isokinetic relationships at the thermal decomposition of tetranuclear copper(II)‐complexes 1995
1995	Kinetic analysis of reversible thermal decomposition of solids 1995
1994	Evaluation and Application of Isokinetic Relationships: The Thermal Decomposition of Solids under Nonisothermal Conditions 1994
1994	Reliability of conversion-time dependencies as predicted from thermal analysis data 1994
1994	Conversion dependence of activation energy for model DSC curves of consecutive reactions 1994
1993	An approach to the solution of the inverse kinetic problem in the case of complex processes. Part 4. Chemical reaction complicated by diffusion 1993
1993	PRODAN,E. - OBITUARY 1993
1993	Extrapolation kinetic problems solved by undiscriminating methods 1993
1993	Thermolysis kinetics of polypropylene on rapid heating 1993
1992	Alternative description of process kinetics 1992
1992	Practical application of isoconversional methods 1992
1992	Kinetic information and models used for its extraction 1992
1992	An approach to the solution of the inverse kinetic problem in the case of complex processes. Part III. Parallel independent reactions 1992
1992	Potentialities of software for kinetic processing of thermoanalytical data by the isoconversion method 1992
1992	Invariant kinetic parameters of polymer thermolysis. IV. Influence of fire‐retardant additives on polypropylene thermolysis 1992
1991	The influence of errors of Arrhenius parameter calculation on the exactness of the solution of the direct kinetic problem 1991
1991	Remarks on "transformation of dynamic DSC curves for thermosetting polymers in curing kinetic analysis" 1991
1991	A method of comparing kinetic curves obtained under isothermal and nonisothermal conditions 1991
1991	An approach to the solution of the inverse kinetic problem in the case of complex processes. Part II. Methods relying on one thermoanalytical curve 1991
1991	Invariant kinetic parameters of polymer thermolysis. III. The influence of a fire‐retardant additive on polypropylene thermolysis 1991
1990	An approach to the solution of the inverse kinetic problem in the case of complex processes. Part 1. Methods employing a series of thermoanalytical curves 1990
1990	Error in determining activation energy caused by the wrong choice of process model 1990
1990	Thermal decomposition of tetrazole. Part 11. Kinetic analysis 1990
1990	On the method of solving the inverse problem of solid-phase reaction kinetics - II. Methods based on generalized descriptions 1990
1989	On the methods of solving the inverse problem of solid-phase reaction kinetics - I. Methods based on discrimination 1989
1988	Illustration of the ambiguity in solving inverse kinetic problems 1988
1988	Estimation of the pre-exponential factor in the isoconversional calculation of effective kinetic parameters 1988
1988	Interpretation of the dependence of the effective values of kinetic parameters on the degree of transformation 1988
1988	Complementarity methodology as applied for solution of the inverse problem for solid-phase reaction kinetics III - General analysis of the method of invariant kinetic parameters 1988
1988	Complementarity methodology as applied for solution of the inverse problem for solid-phase reaction kinetics II - Generalized kinetic description using a spectrum of functions 1988
1988	Complementarity methodology as applied for solution of the inverse problem of solid-phase reaction kinetics - Part I. Interpretation of the applicability of the generalized topokinetic equation for describing complex processes 1988
1987	On the dependence of kinetic parameters and functions in non-isothermal kinetics 1987
1987	Some aspects of mathematical statistics as applied to nonisothermal kinetics V - Comparison of the amount of information obtained in traditional and nontraditional approaches 1987
1987	Some aspects of mathematical statistics as applied to nonisothermal kinetics - Part IV. Methodological aspects 1987
1987	Some aspects of mathematical statistics as applied to nonisothermal kinetics - Part III. Unified approach to the analysis of kinetic functions 1987
1986	Some aspects of mathematical statistics as applied to non-isothermal kinetics - Part II. Sensitivity of the kinetic parameter calculation method to the form of the kinetic function 1986
1985	The use of non-linear statistic methods for determination of kinetic parameters and kinetic functions choise according to thermogravimetric data 1985
1985	Some aspects of mathematical statistics as applied to nonisothermal kinetics - Part I. Regression and correlation analysis 1985
	Nonisothermal crystallization of polymers: Getting more out of kinetic analysis of differential scanning calorimetry data

Book

Year	Title	Altmetric
2018	Foreword. Ed. 6. 2018
2015	Isoconversional kinetics of thermally stimulated processes 2015

Chapter

Year	Title	Altmetric
2018	Modern Isoconversional Kinetics: From Misconceptions to Advances. 131-172. 2018
2016	Isoconversional kinetics by fast scanning calorimetry. 237-257. 2016
2008	Thermogravimetric Analysis (TGA). 241-317. 2008

Research Overview

Our research interests are concerned with thermophysical properties and reactions of polymeric, pharmaceutical and energetic materials. We study these materials by using a variety of analytical techniques including Infrared (IR) Spectroscopy, Mass Spectrometry (MS), Thermogravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC), Thermomechanical Analysis (TMA), Dynamic Mechanical Analysis (DMA), Polarized Light Microscopy (PLM), etc. Kinetic analysis of thermal data plays the key role in our work. We develop and apply our original kinetic methodology “Isoconversional Kinetic Analysis” also known as “Model-free Kinetics”.

Polymers
We focus on the processes of degradation, relaxation, crystallization, gelation, and polymerization. Our special focus is on the nanostructured polymeric systems. We use the TGA, MS, IR, DSC, and DMA to understand the effect of polymer chain nanoconfinement on the thermal behavior of polymers.

Pharmaceuticals
Amorphous pharmaceuticals are inherently unstable and tend to relax toward the stable crystalline state that ultimately results in the formation of crystalline drugs, which have significantly lower bioavailability. In order to evaluate stability of the amorphous drugs we probe their relaxation kinetics at temperatures significantly below the glass transition temperature. DSC is employed to detect the process of relaxation and crystallization occurring in aged amorphous samples.

Energetics
We use TGA and DSC to study the thermal decomposition kinetics of explosives and propellants. Obtaining reliable kinetic characteristics of decomposition is important for estimating thermal stability of energetic materials as well as for simulating the decomposition rates at the high temperatures associated with the combustion conditions. By combining DMA and MS, we have developed a novel analytical technique for studying mechanochemical effects in degradation of energetic materials such as nitrocellulose.

Keywords - Analytical and Physical Chemistry, Thermophysical Properties of Materials, Kinetics and Mechanisms of Thermally Stimulated Processes