Doctor Gary R Dennis

• Biography
• Areas of Research / Teaching Expertise
• Grants / Current Projects
• Awards and Recognition
• Selected Publications
• Optional
• Contact Details

Biography

Dr. Dennis’s qualifications are B.Sc. (1st Class Honours in Inorganic Chemistry), University of Sydney and Ph.D. (Physical Chemistry), University of Sydney. He has had lecturing positions at the University of Sydney, University of New England and University of Western Sydney. He has made significant contributions to understanding the chromatography and surface chemistry of polymers and block-copolymers. His use of anionic and RAFT techniques for the controlled synthesis of polymers has allowed a) measurement of the Gibbs Free Energy of interaction in chromatographic systems, b) diffusion of polymers, c) dispersion of nano-particles and d) stability of monolayers at the air-water interface. He has published 56 journal papers (31 in last 5 years) as well as 22 technical proceedings (9 in last five years). Dr Dennis has a significant track record of interaction with Industry, principally involving projects on polymer, surface and analytical chemistries and he has completed over 120 industrial projects. He has successfully completed projects for many companies including BP, Dow Corning, Cable Makers, BHP and 3M. He has supervised 22 Honours, 3 MSc and 10 PhD students.

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Areas of Research / Teaching Expertise

Analytical Chemistry, Polymer Chemistry, Surface Chemistry

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Grants / Current Projects

Investigation of aqueous solutions/emulsions of silanes for passivation of metals ($42,000, BP Australia Pty Ltd)

Characterization of High Power Sonicated and Wet High Intensity Magnetic Separated Bayer Red Mud Residues ($270,000, CSIRO Flagship Fund)

Development of a Cost-Effective Organic-Inorganic Nanocomposite for High Quality Gravure Printing ($161283, ARC Linkage, Kirk Pty Ltd)

Optimisation of Preparative Scale Two-Dimensional Liquid Chromatographic Separations of Targeted Compounds in Complex Sample Mixtures ($67500, UWS Research Partnerships Program, Phenomenex Pty)

Behaviour of Star Polymers at the Air-Water Interface ($4200, AINSE)

Hybrid Fourier Transform Dispersive Raman Micro-Spectrometer ($230,000, ARC)

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Awards and Recognition

George Harris Scholarship

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Selected Publications

M.J. Gray, G.R. Dennis, P.J. Slonecker, R.A. Shalliker, Separation of oligostyrene isomers in a complex mixture using two-dimensional heart-cutting reversed-phased liquid chromatography, J. Chromatogr. A., 1073 (2005), 3-9.

S. Kayillo, M.J Gray; R.A. Shalliker, G.R. Dennis, Molecular differences between deuterated and non-deuterated polystyrenes using reversed phase high performance liquid chromatography, J. Chromatogr. A., 1073 (2005), 83-86.

P. Mudgil, G.R. Dennis, T.J. Millar, The Surface Pressure Dynamics and Appearance of Mixed Monolayers of Cholesterol and Different Sized Polystyrenes at an Air-Water Interface, Langmuir, 21 (2005), 1338-1345.

S. Kayillo, R. A. Shalliker, G.R. Dennis Thermodynamic Differences Between Deuterated and Protonated Polystyrenes Evaluated Using Reversed Phase Liquid Chromatography, Macromol.Chem.Phys., 206 (2005), 2013–2017.

S.T. Tragoulias, P.J. Anderton, G.R. Dennis, F. Miano, T.J. Millar, Surface pressure measurements of human tears and individual tear film components indicate that proteins are major contributors to the surface pressure, Cornea, 24 (2005),189-200.

L.A. Evans, A.L. McCutcheon, G.R. Dennis, R.C. Mulley, M.A. Wilson, Pore size analysis of fallow deer (Dama dama) antler bone, J Mater. Sci., 40 (2005), 5733-5739.

N.H. Tran, G.R. Dennis, A. Milev, G.S.K. Kannangara, M.A. Wilson, R.N. Lamb, Interactions of sodium montmorillonite with poly(acrylic acid), J. Colloid Interf. Sci., 290 (2005), 392-396.

M.J. Gray; G.R. Dennis, P.J. Slonecker, R.A. Shalliker, Utilising retention correlation for the separation of oligostyrenes by coupled-column liquid chromatography, J. Chromatogr. A., 1073 (2005), 3-9.

M.J. Gray, P.J. Slonecker, G.R. Dennis and R.A. Shalliker, A Column Capacity Study of Single, Serial, and Parallel Linked Rod Monolithic HPLC Columns, J. Chromatogr. A., 1096 (2005), 92-100.

T.J. Millar, S.T. Tragoulias, P.J. Anderton, M.S. Ball, F. Miano, G.R. Dennis, P Mudgil, The surface activity of purified ocular mucin at the air-liquid interface and interactions with meibomian lipids, Cornea, 25(2006), 91-100.

N.H. Tran, G.R. Dennis, A.S. Milev; G.S.K. Kannangara, P. Williams, M.A. Wilson, R.N. Lamb, Dispersion of organically modified clays within n-alcohols, J. Colloid Interf. Sci., 297 (2006), 541-545

E.P. Toups, M.J. Gray, G.R. Dennis, N. Reddy, M.A. Wilson, R.A. Shalliker, Multidimensional liquid chromatography for sample characterisation, J. Sep. Sci., 29 (2006), 481-491.

P. Mudgil, G.R. Dennis, T.J. Millar, Interactions of Poly(tert-butyl acrylate)-Poly(styrene) Diblock Copolymers with Lipids at the Air-Water Interface, Langmui,r 22 (2006), 7672-7677.

N.H. Tran, M.A. Wilson, A.S. Milev, G.R. Dennis, A.L. McCutcheon, G.S.K. Kannangara, R.N. Lamb, Structural-Chemical Evolution within Exfoliated Clays, Langmuir, 22 (2006), 6696-6700.

H.J. Catchpoole, R.A. Shalliker, G.R. Dennis, G. Guiochon, Visualising the onset of viscous fingering in chromatography columns, J. Chromatogr. A, 1117 (2006), 137-145.

N.H. Tran, G.R. Dennis, A.S. Milev, G.S.K. Kannagara, M.A. Wilson and R.N. Lamb Dispersion of silicate nano-plates within poly(acrylic acid) and their interfacial interactions. Sci.Technol. Adv. Mater., 7 (2006), 786-791

S. Kayillo, G.R. Dennis, R. A. Shalliker, An assessment of the retention behaviour of polycyclic aromatic hydrocarbons on reversed phase stationary phases: Selectivity and retention on C18 and phenyl-type surfaces, J. Chromatogr. A, 1126 (2006), 283-297.

N H Tran, M A Wilson, A S Milev, G R Dennis, GS K Kannangara Mechanism of silica nano-plate formation from lucentite, Surf. Rev. and Lett., 14 (2007), 235-239.

C.S. Milroy, G.R. Dennis, R.A. Shalliker, Ultra-high resolution separation of diastereomers on carbon adsorption stationary phases, J. Liq. Chromatogr. & Relat. Technol., 30 (2007), 991-999.

R.A. Shalliker,H.J. Catchpoole, G.R. Dennis, G. Guiochon, How viscous fingering can spoil your separation and you may not even suspect it, BioProcess Internat., 5 (2007), 32-37.

Kayillo, G.R. Dennis, R. A. Shalliker, An assessment of the retention behaviour of polycyclic aromatic hydrocarbons on reversed phase stationary phases-Thermodynamic behaviour on C18 and phenyl-type surfaces, J. Chromatogr. A, 1145 (2007), 133-140.

Kayillo, G.R. Dennis, R. A. Shalliker, Retention of polycyclic aromatic hydrocarbons on propyl-phenyl stationary phases in reversed-phase high performance liquid chromatography, J. Chromatogr. A, 1148 (2007), 168-176.

N.H. Tran, M.A. Wilson, A.S. Milev, G.R. Dennis, G.S. Kannangara, Mechanism of Silica Nano-Plate Formation from Lucentite, Surf. Rev. Lett., 14 (2007), 235-239.

A. Shalliker,H.J. Catchpoole, G.R. Dennis, G. Guiochon, Georges. Visualising viscous fingering in chromatography columns: High viscosity solute plug, J. Chromatogr. A., 1142 (2007), 48-55.

P.G. Stevenson, S. Kayillo, G.R. Dennis, R.A. Shalliker, Effects of p-p interactions on the separation of PAHs on phenyl-type stationary phases, J. Liq. Chromatogr. & Relat. Technol., 31 (2008), 324-347.

G.R. Dennis, J.L. Garnett, K.J. Jarrett, Novel UV Cured Polymers for Coating Paper and Banana Tree Veneer, Surf. Coat. Aust., 44 (2007), 14-18.

N.H. Tran, M.A. Wilson, G.R. Dennis, G.S.Kannangara, Formation mechanism and surface property of exfoliated silica nano-plates, J. Phys.: Conf. Ser., 100 (2008), 012013- 012016.

R.A. Shalliker, S. Kayillo, G.R. Dennis, Optimizing chromatographic separation: an experiment using an HPLC simulator, J. Chem. Educ., 85 (2008), 1265-1268.

T. Pereira, J. Nikodinovic, C. Nakazono, G.R. Dennis, K.D.Barrow, J.A. Chuck, e Community structure and antibiotic production of Streptomyces nodosus bioreactors cultured in liquid environments, J. Microbial Biotech., 1 (2008), 373-381.

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Optional

* Consultant and Expert Witness
* Member of RACI
* Chartered Chemist

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