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NS Faculty - Janusz Grebowicz

Dr. Grebowicz

Janusz Grebowicz

Professor Physics

Office: S812

Dr. Janusz Grebowicz is a native of Poland. He grew up primarily in the city of Łódź (Poland) where he received his education. He received MS degree in Physics from University of Łódź, with a concentration in Experimental Physics. His MS project was on Polymer Physics, development of experimental methods of characterization morphology of semi crystalline polymers. Soon after, he was appointed researcher at the Center of Molecular and Macromolecular Studies, Polish Academy of Sciences. There he received his PhD on research on Polymer Blends. The next step in his career was a series of post-doctoral studies at: Rensselaer Polytechnic Institute (Troy, NY), Max Planck Institute (Mainz, Germany), and University of Massachusetts, Amherst. During this period he became a world class specialist in Thermal Analysis. For over a decade he worked for Shell Oil, Westhollow Technology Center in Houston, as the head of the Thermal Analysis laboratory (global reach).

He is now Professor of Physics at University of Houston-Downtown. In 2014/15 he was awarded a Fulbright Scholarship at AGH University of Science and Technology in Krakow, Poland, where he taught Thermophysical Properties of Materials for 1st and 2nd year doctoral studies. His is devoted to the value of international education, and helped to design the growing, unique exchange


Ph.D. in Physical Chemistry, Center of Molecular and Macromolecular Studies Polish Academy of Sciences, Lodz, Poland, 1977

Post-doctoral studies

- Rensselaer Polytechnic Institute, Troy, NY - Polymer Physics

 - Max Planck Institute, Mainz, Germany - Polymer liquid crystals

 - University of Massachusetts, Amherst, MA - Polymer blends 

​MS in Physics, University of Lodz, 1969

  • College and University Physics I and II, and corresponding labs

  • 3402 Thermophysical Properties of Materials, Lecture and Lab 

  • 3300 Undergraduate Research in Physics

  • 3399 Physics, Workshop on Thermal Properties of Oil ShalesSpecialty Methods for the Study of High Temperature Materials

  • Modern Material Technologies


  • University of Houston-Downtown, Professor of Chemistry and Physics, 2004- present
  • Shell Chemicals, Westhollow Technolog Center, Houston TX, Staff Research Physicist, 1989 – 2004  
  • SC Johnson Wax, Racine WI  Senior Research Scientist 1988 - 1989

Research Interest

Areas of Specialization/ Research Interests

Solid State Physics/Polymer Physics

Material Structure-Processing-Properties Relationship Thermal Analysis:

    • Thermal Properties of Materials (low molecular weight and polymers)

    • Thermal Properties of Geological Materials: Hydrocarbon Bearing Rocks, Geological Materials for Underground Repositories of Spent Nuclear Fuels

    • Hybrid energy systems

Familiarity with classes of materials

  • Polymers: Thermoplastic Homopolymers, Copolymers and Polymer Blends, Elastomers, Thermosets, Mesophase Materials, Films, Fibers, Granules, Bulk materials, Powders and downstream products.

  • Small Molecules: Bisphenol A, Lubricants, Gasoline, Additives, Solid Contaminants, Polymorphism, Liquid Crystals.

  • Exploration &Production: Oil shales, Coal, Minerals, Crude oil, Rocks for permanent geological repository of nuclear waste.

​Honors and Awards

  • 2014/15 Fulbright Scholar at Akademia Gorniczo-Hutnicza (AGH) University of Science and Technology Krakόw, Poland.
  • 2019 Chemistry and Analytical Techniques International Conference, San Francisco
    • Keynote speaker
    • Chair of Symposium
    • Signatory for the conference
  • Chaired four international symposia
  • GOPE (Gas, Oil, Petroleum Engineering), San Francisco, 2019
  • Journal of Thermal Analysis and Calorimetry Conference, Budapest, 2017
  • International Union of Pure and Applied Chemistry, Warsaw, 2002
  • American Chemical Society, San Francisco, 1999

International Expert for PONdER (Public Opinion of Nuclear Energy)            project,Nanyang Technological University, Singapore , 2017-2018
Featured in "Who is Who in Thermal Analysis", published in 2015




1.      B. Wunderlich, M. Moller, J. Grebowicz. H. Baur

            Conformational Motion and disorder in Low and High Molecular Mass Crystals;   Advances in Polymer Science 87, Springer-Verlag

2.      J. Menczel, J. Grebowicz

Handbook of Differential Scanning Calorimetry; in print with Elseviere


List of Refereed Papers*)

*) in bold names of undergraduate students


72.  R. A. Lalancette, D. Syzdek, J. Grebowicz, E. Arslan, I. Bernal, The Thermal  Decomposition and Analyses of Metal Tris-Acetylacetonates:  Free Radical Formation from Al, Cr, Mn, Fe and Co Complexes, Journal of Therm Anal Calorim (2019) 135: 3463.

71.  R. A. Lalancette, E. Arslan, I. Bernal, D. Willhelm, J. Grebowicz, M. Pluta, The Thermochemistry and Crystallography of the Metal Tris-Acetylacetonates.  Part  2:  Journal of Thermal Analysis and Calorimetry 131 (3), 2809-2819, 2018. 2, 2018. 

70.  R. A. Lalancette, E. Arslan, I. Bernal, D. Willhelm, J. Grebowicz, Miroslaw Pluta.

 The Thermochemistry of Metal Tris-Acetylacetonates.  Part 1.  Al, Ti, V, Cr, Mn, Fe   and Co, Journal of Thermal Analysis and Calorimetry, 131(3), 2809-19, 2018.

69.  I. Taraghi, S. Paszkiewicz, A. Buchard, J. Grebowicz, A. Fereidoon and Z.  

       Roslaniec, Nanocomposites of Polymeric Biomaterials Containing Carbonate    

       Groups: An Overview, Macromol. Mater. Eng. 2017, 1700042.

67.  J. Grebowicz,  Understanding thermal properties of oil shales at high temperature   toward application of nuclear energy in extraction of natural hydrocarbons, Journal of Thermal  Analysis and Calorimetry, June 2014, Volume 116, Issue 3, pp 1481-1490.

66. Thermotropic mesomorphism in catanionic surfactants synthesized from quaternary      

ammonium surfactants and sodium dodecylbenzenesulfonate: Effect of chain length and symmetry;  R.Jose, T. Patel, T. A. Cather, D.  Willhelm, J. Grebowicz, H. Han, P. Kumar Bhowmik, L.  Sharpnack, D.  Mae Agra-Kooijman, and S.  Kumar, Colloids and Surfaces, A: Physicochemical and Engineering Aspects 461, 40-49 (2014).

65. J. Grebowicz, Thermal Properties of Oil Shales at High Temperature: Towards Integration of Nuclear Power with Production of Natural Hydrocarbons, Proceedings of 41th NATAS Conference, August, 2013.

64. Z. Jaco and Janusz Grebowicz, Combined Methods of Thermal Analysis for Characterization of Rocks Containing Hydrocarbons, Proceedings of 41th NATAS Conference, August, 2013.

63. S. Massoud,  E. Taylor, Y. Liu, J. Grebowicz, R. Vicente, R. Lalancette,

 U.  Mukhopadhyay, I. Bernal and S. F. Watkins; Synthesis, Structure, Thermal,    Magnetic Properties and Quantum Mechanical Calculations of Bridged [Bis(di(2-pyridylmethyl)amine)-(μ2-1,2-bis(4-  pyridyl)ethane)-tetraperchlorato-dicopper(II)] Dihydrate Complex (I), CrystEngComm, 2014, 16, 175-183.

62. R. Jose, T. J. Patel, T. A. Cather, J. Grebowicz, H. Han, P. K. Bhowmik, D. M.  Agra-Kooijman, S. Kumar; Room temperature thermotropic liquid crystalline phases of catanionic surfactants derived from quaternary ammonium surfactants and bis(2-ethylhexyl)sulfosuccinate, Journal of Colloid and Interface Science 411 (2013) 61–68.

61. F. R.  Louka, M. L. Spell, J. Grebowicz, J. H. Albering, F. A . Mautner, S. S. Massoud; "Coordination  Chemistry of 1,4-bis{bis(2-pyridylmethyl)aminomethyl}benzene with copper(II),  Journal of Molec.  Struc. 995 (2011) 103-108.

60.  F.A Mautner, J. Grebowicz,  P.J. Deifik, R.S. Perkins, S.S. Massoud; "Structural   characterization of copper(II) complexes based on a new 10-membered binucleating 1,6-diazecine ligand", Journal of  Molec. Struc., 933 (2009) 69-76.

59.  S.S. Massoud, E. Druel, M. Dufort, R. Lalancette, J. Kitchen, J. Grebowicz,  R. Vicente, U. Mukhopadhyay,  I. Bernal, F. A. Mautner; Versatile binding properties of di-pyridyl ligands with Cu(II) complexes.  The syntheses,  structural characterization and thermal analysis of six new species, Polyhedron, 28 (2009) 3849-57.

58.  H.H. Chuah, J. Grebowicz, D. R. Kelsey, J.M. Olvera, B. Scardino and C. Tse; 

Effects of Isophtalate Comonomer on Poly(trimethylene terephtalate) Fiber Spinning and Properties, Accepted for publication in J. Applied Polymer Science, (2009). 

57.   Febee R. Louka , Franz A. Mautner, Janusz Grebowicz , Richard S. Perkins, Salah 

        S. Massoud,  Structural characterization of copper(II) complexes based on a new

        10-membered binucleating 1,6-diazecine ligand , J. Molec. Struc., 933 (2009) 69-76

56.   J.S. Grebowicz and R.N. French; Phase structure and sorption-desorption in 

        Poly(trimethylene terephtalate)(PTT); Thermochimica Acta, 396, 133 (2003).

55.   J-M. Olvera, H.H. Chuah and J.S. Grebowicz; Crystallization of Poly(Trimethylene

        terephtalate)(PTT),  Paper presented at the 30th NATAS Conference, Pittsburgh, PA,

        September 23-25 (2002). See Proceedings, pg. 223.110

54.   Y-Z. Hu, C. Chamchoumis, J.S. Grebowicz and R.P. Thummel; Unique 2:1 Complex  with trans-Chelating Bis-Pyridine Ligand, Inorganic Chemistry, Vol. 41, No. 8, 2296 (2002)

53.   B. Wang, C.Y. Li, J. Hanzlicek, S.Z.D. Cheng, P.H. Geil, J.S. Grebowicz, R.-M. Ho,  "Poly(trimethylene terephthalate) crystal structure and morphology in different length scales"  Polymer, 42(16), 7171-7180 (2001)

52.  J.S. Grebowicz, H. Brown, H. Chuah, J.M. Olvera, A. Wasiak, P. Sajkiewicz and A.

        Ziabicki; Deformation of undrawn poly(trimethylene terephtalate) (PTT) fibers,    

        Polymer, 42, 7153 (2001).

51.  M. Pyda, M.L. Di Lorenzo, J. Pak, P.Kamasa, A. Buzin, J. Grebowicz and B. Wunderlich;  Reversible and Irreversible Heat Capacity of Poly[carbonyl(ethylene-co-propylene)] by Temperature –Modulated Calorimetry, J. Polymer Sci: Part B: Polymer Physics, Vol.  39,  1565 (2001).

50.   D.R. Kelsey, B.M Scardino, J.S. Grebowicz and H.H. Chuah; High Impact, Amorphous Terephtalate Copolyester of Rigid 2,2,4,4-Tetramethyl-1,3-cyclobutanediol with Flexible Diols, Macromolecules, 33, 5810 (2000).

49.   M. Levin, J.M. Olvera, C. Garcia and J. Grebowicz; A Study of the Energetics of

Oligomer/Polymer Decomposition,  Proceedings AIChE South Texas Section 1998 Process Plant Safety Symposium (Oct. 26-27, 1998).

48.  H. Brown, C. Hwo and. J. Grebowicz , Poly(trimethylene terephtalate) Polymer for  Spunbond and Meltblown Fibers, Proceedings of the 8th TANDEC Meeting, Knoxville, TN, 1998 8th, Paper 5.2.

47.  M. Pyda, A. Boller, J. Grebowicz, H. Chuah,  B.V. Lebedev and B. Wunderlich; Heat

capacity of Poly(trimethylene terephtalate), J. Polym. Sci: Part B: Polym. Phys., 36, 2499  (1998).

46.  K. Yshikiriyama, M. Pyda, G. Zhang,, T. Forschner, J. Grebowicz and B. Wunderlich;   Heat Capacity of Poly-p-dioxanone, J. Macomol. Sci. – Phys., B37(1), 27 (1998).

45.  J. S. Grebowicz; Thermal Properties of Polycarbonate Grade Bisphenol A,  J. Thermal

       Anal., 46, 1151 (1996).

  44.  J. S. Grebowicz; On the Formation of Liquid Crystalline Texture in Epoxy Resins,            Makroml. Chem., Macromolecular Symp., 104, 191 (1996). 

43.  S. M.  Beshouri, J.S. Grebowicz and H.H. Chuah; Thermal Properties of

        Poly(pivalolactone), Polym. Eng. Sci., 34(1), 69 (1994).

42.  M. Varma-Nair, B. Wunderlich, J. Grebowicz and R. Bauer; Thermal Behavior of Epoxy Resins, Thermochim. Acta, 226, 99 (1993); also Proc. 21st NATAS Conference in Atlanta, GA, Sept 13-16, pgs. 54-59, (1992).

41.  K. Liang, J. Grebowicz, E. Valles, F.E. Karasz and W.J.  MacKnight; Thermal and

        Rheological Properties of Miscible Polyethersulfone/Polyimide Blends, J.Polymer Sci., Part B: Polymer Physics, 30, 465 (1992).

40.   J. Grebowicz, M. Varma-Nair and B. Wunderlich; The Thermal Properties of

         Poly(pivalolactone) , Polymers for Adv. Technol.,3, 51 (1992).

39.   J. Grebowicz: Thermal Properties of  Poly(vinylcyclohexane);  Polymer Eng. and Sci.,

         32(17), 1228 (l992).

38.   K. Liang, L. Wu, J. Grebowicz, F.E. Karasz and W.J.  MacKnight; Miscibility Behavior in Poly(ethersulfone)/ Polyimide Blends with and without solvents,  in Progress in Pacific Polymer Science, ed. B.C. Anderson and Y. Imaniski, Springer-Verlag,  Heidelberg, 1991, pp.213-225.

37.   G. Smyth, E.M. Valles, S.K.Pollack, J.Grebowicz,   P.J. Stenhouse, L.S. Hsu and W.J.

         MacKnight: Development  of Crystallinity in a Polyuretane Containing Mesogenic  Units. 1. Morphology and Mechanism; Macromolecules, 23,  3389 (1990).

36.    K.J. Miller, H.B. Hollinger, J. Grebowicz and B. Wunderlich: On the Conformations of Poly(p-xylylene) and  Its Mesophase Transitions:  Macromolecules, 23(16), 3855 (1990).

35.   K. J. Miller, J. Grebowicz, J.P. Wesson and B. Wunderlich:  Conformations of

          Poly(diethylosiloxane)  and Its Mesophase Transitions:  Macromolecules, 23(2), 851  (1990).

34.   J. Grebowicz, R. Pan and B. Wunderlich: Thermal Properties  of Drawn Poly(tetra

          fluoroethylene); J. Appl. Polymer Sci., 38, 707 (1989).

33.   G. Smyth, J.Grebowicz, P. Stenhouse, W.J. MacKnight and  S.W. Kantor: Thermal

           Transitions and Structure Analysis of a Mesomorphic Polyuretane;  Proceedings of     17th NATAS  Conference, Orlando, FL, 1988, p.424.

32.   B. Wunderlich, M. Moeller, J. Grebowicz and H. Baur:  Conformational Motion

         and Disorder in Low and High Molecular Mass Crystals;  Advances in Polymer  Sci., 87,1- 121, (1988).

31.   R. Rosenau-Eichin, M. Ballauff, J. Grebowicz, and E.W. Fischer: Structures and Thermal Transitions of Copolymers of metha- and  para-Hydroxybenzoic Acids;  Polymer 29, 58 (1988).

30.   H. G. Wiedemann, J. Grebowicz and B. Wunderlich: Condis Crystals of Small Molecules. II.   The Polymorphs of N, N'-bis(4-n-octyloxy benzal)-1,4-phenylenediamine ( OOPDA);  Mol. Cryst. Liq. Cryst. 140, 219 (1986).

29.    J. Grebowicz, S. Cheng and B. Wunderlich: Kinetics of Transitions Involving Condis

         Crystals;  J. Polym. Sci., Polymer Phys. Ed. 24, 675 (1986).

28.    J. Grebowicz, W. Aycock and B. Wunderlich: Heat Capacities of 1, 4-          Polybutadienes:  Polymer 27, 575 (1986).

27.   B. Wunderlich and J. Grebowicz: Thermal Analysis of Liquid Crystals and Condis Crystals; Amer. Chem. Soc. Polymer Sci. Preprints 26(1), 1 (1985), Miami, FL, update: Analysis of Condis Crystals, in "Integration of Fundamental Polymer Science and Technology", II", P. J. Lemstra and L.A. Kleinjiens, eds., Elsevier, London 1988.

26.   H. Suzuki, J. Grebowicz and B. Wunderlich: Glass Transition of  Polyoxymethylene;  Brit. Polymer J. 17, 1(1985).

25.   H. Suzuki, J. Grebowicz and B. Wunderlich: Heat Capacity of Semicrystaline,  Linear

         Polyoxymethylene and Polyoxyethylene; Makromol. Chem. 186, 1109 (1985).

24.   J. Grebowicz, H. Suzuki and B. Wunderlich: Heat Capacities of Polyethylene and Linear Aliphatic Polyoxides; Polymer 26, 561(1985).

23.  B. Wunderlich and J. Grebowicz: Do Condis Crystals Exist?; in Polymeric  Liquid Crystals, p. 145, A. Blumstein ed., Plenum 1985.

22.  J. Grebowicz and B. Wunderlich: On Cp to Cv Conversion for Solid Linear      Macromolecules; J. Thermal Anal. 30, 227 (1985).

21.  B. Wunderlich and J. Grebowicz: Characterization of Conformationally Disordered  Crystals by DSC; Am. Chem. Soc. 0rg. Coating Appl. Polymer Sci. Preprints 50, 144 (1984).

20.   J. Grebowicz, S.-F. Lau and B. Wunderlich: Thermal Properties of Polypropylene; J.

         Polymer Sci., Polymer Symp. 71, 19 (1984).

19.   B. Wunderlich and J. Grebowicz: Thermotropic Mesophases of Linear, Flexible

         Macromolecules;  Adv. Polymer Sci. 60/61, 1(1984).

18.   J. Grebowicz: Mesophase Polypropylene; ibid. p. 303.

17.   H.G. Wiedeman, J. Grebowicz, J. Wesson and B. Wunderlich: Investigation and  Discussion of Liquid Crystals, Plastic Crystals and Condis Crystals by Microscopy and Calorimetry; Proc. 12th NATAS Conference, Williamsburg, VA, J.C. Buckled. p. 259 (1983).

16.   A. Galeski, J. Grebowicz and M. Kryszewski: Interpenetration of Spherulites in Polymer Blends; Makromol. Chem. 184, 184 (1983).

15.   J. Grebowicz and B. Wunderlich: Phase Transition in Mesophase  Macromolecules. 4. The Transitions in  Poly(oxy-2-2'-dimethylazoxybenzene-4,4'-diyloxydodecanedioyl);  J. Polym. Sci., Polym. Phys. Ed. 21, 141(1983).

14.  A. Wrobel, J. Kowalski, J. Grebowicz and M. Kryszewski: Thermal  Decomposition of

        Plasma- Polymerized Organosilicon Thin Films; J. Macromol: Sci., Chem. A17.3, 433   (1982).

13.  B. Wunderlich and J. Grebowicz: Glass Transition of Mesophase Macromolecules;    Thermal  Analysis, Proc. 7th ICTA Meeting, B. Miller ed.  Hayden-Willey, Chichester, Vol. 2, p. 1084 (1982).

12.   J. Grebowicz and B. Wunderlich: The Glass Transition of  p-Alkyl-p'-Alkoxy-Azoxybenzene  Mesophases; Molec. Cryst. Liq. Cryst. L6, 287 (1982).

11.   J. Grebowicz and T. Pakula: Crystallization and Melting of Components in  Polyethylene- Polypropylene Blends: in Polymer Blends: Processing, Morphology  and Properties; E. Martuscelli, R. Palumbo and M. Kryszewski eds. Plenum Press, N.Y. 1980.

10.   J. Grebowicz, V. Shilov, Yu. Lebedev, V. Privalko, Yu. Lipatov and M. Kryszewski: The Phase Structure and Some Mechanical Properties of  Polystyrene-Poly(methyl   metacrylate) Blends; Polimery-Tworzywa 12, 37 (1980).

 9.   J. Grebowicz, T. Pakula, A. Wrobel and M. Kryszewski: Phase Structure of  Thin 

        Polysilazane Films Obtained by Glow Discharge Polymerization; Thin  Solid Films 65, 351(1980).

 8.   T. Pakula, J. Grebowicz and M. Kryszewski: The Kinetics of Spontaneous  Changes in Phase Structure of Molten Two-Component Polymer Systems; Polymer  Bull. 2, 799 (1980).

7.    J. Grebowicz, Z. Pelzbauer, T. Pakula and M. Kryszewski: Scanning E.M. studies of 

       Helically-Oriented Polypropylene Fibers; Polymer 20, 1281(1979).

6.   J. Grebowicz, T. Pakula and M. Kryszewski: The influence of Phase Structure  on Young Modulus of Polystyrene-Polypropylene and Polystyrene-Polyethylene Blends; Polimery-Tworzywa (Polish)12, 425 (1978).

5.   M. Kryszewski, A. Galeski, T. Pakula and J. Grebowicz: Supermolecular  Structure of

       Polyethylene- Polypropylene Blends; Vysokomol. Soed. 7, 1969 (1974).

4.   T. Pakula, M. Kryszewski, J. Grebowicz and A. Galeski: Two-Dimensional Model  of

Mechanical Properties of Polymer Blends: Application to Polyethylene and Polypropylene Blends;  Polymer  J. 2, 94 (1974).

3.  M. Kryszewski, A. Galeski, T. Pakula and J. Grebowicz: Transport Phenomena in Polymer Blends;  J. Colloid Interph. Sci. 1, 85 (1973).

2.  M. Kryszewski, A. Galeski, T. Pakula and J. Grebowicz: Supermolecular Structures in  Blends of Polyethylene and Polypropylene with  Ethylene-Propylene Rubber;  Collection of Papers on Composite Materials, Nauka, Kiev, 1973.

1.  M. Kryszewski, A. Galeski, T. Pakula and J. Grebowicz: Supermolecular Structure in  Blends of Polypropylene and Ethylene-Propylene Rubber;  J. Appl.  Polym. Sci. 15, 1139 (1971).

Last updated 4/15/2020 4:56 AM