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Darren L. Williams, Ph.D.
Physical Chemistry
Sam Houston State University
 
 
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Research Colleagues

 

Master of Science Graduates

Trisha M. O'Bryon Trisha graduated in August 2012 with her Master of Science degree in Chemistry. Her thesis title was PREPARATION OF A NON-EVAPORATING CONTACT ANGLE STANDARD REFERENCE MATERIAL. She was the coauthor of two publications with Dr. Williams and is now a Higher Education Technology Teaching Assistant at Sapling Learning in Austin, Texas.

Karl D. Kuklenz
Karl D. Kuklenz

Karl graduated in May 2009 with his Master of Science degree in Chemistry. His thesis title was A COMPUTATIONAL ROUTE TO HANSEN SOLUBILITY PARAMETERS OF NITRATED SPECIES THROUGH A QUANTITATIVE STRUCTURE ACTIVITY RELATIONSHIP (QSAR). He was the coauthor of 3 publications and 4 presentations with Dr. Williams. Karl is now a Technologist working at GE Water & Process Technologies in The Woodlands, Texas.

Thomas J. Flaherty
Thomas J. Flaherty

Thomas graduated in May 2006 with his Master of Science degree in Chemistry. His thesis title was A DENSITY FUNCTIONAL THEORY ANALYSIS OF THE VIBRATIONAL SPECTRA OF NITRATED METHYLENEDIPHENYL-DIISOCYANATE-BASED POLY(ESTER URETHANE) FRAGMENTS. He was a coauthor of 3 publications and 2 presentations with Dr. Williams. Thomas is now a chemistry professor at Green River Community College.

 

Research Collaborators

Dr. Steven Abbott
Dr. Steven Abbott
Dr. Steven Abbott [UK] (and by extension, Hiroshi Yamamoto [Japan] and Charles Hansen [Denmark]) and Dr. Williams are collaborating on improved experimental methods and molecular models for determining the Hansen solubility parameters of solvents, substances, and surfaces. Dr. Abbott's work is well described at the official Hansen solubility parameter web site.
Dr. Brian M. Loft
Dr. Brian Loft
Dr. Brian Loft and Dr. Williams are collaborating on a universal solvent blend predictor. The software in its current form will take 100 candidate solvents and will calculate the 2-, 3-, and 4-component blends that target a particular solute using the Hansen solubility parameters. Dr. Loft has included several undergraduate mathematics majors in this project.

 

Undergraduate Researchers

 

Calendar Year 2010

Mark Amann
  • Photographic data collection of contact angle for cleaning verification
  • Development of a wipe-soak cleaning method
  • Development of a mechanically-rigid contact angle standard
  • Development of procedures for the use of four different contact angle evaluation software packages
  • Development of an ethylene-gas detection method
Madison Hausinger
Megan Konarik
Elizabeth Nesselrode
Calendar Year 2009
Bryan Crom
  • Photographic data collection and analysis of swell tests and contact angle results using a Keyence digital microscope, DinoLite digital microscope, and ImageJ software.
  • Preparation of vacuum-degassed epoxy, silastic, and polyurethane adhesives
  • Solvent swell tests of cured epoxy, silastic, and polyurethane adhesives
  • Hansen solubility sphere determinations using the methods outlined in Hansen's handbook 2nd edition and Microsoft Excel, and Hansen Solubility Parameters in Practice.
  • Contact angle measurement and analysis using ImageJ

Kyle Lesko

John Jackson
John Jackson (JJ)
Trisha O'Bryon
Trisha O'Bryon
Angela Rippley
Angela Rippley
Calendar Year 2008

Steve Doss
Steven Doss

  • Hansen solubility parameter measurements of crystalline solutes
  • Group additivity methods for modeling the Hansen solubility parameters

 

John Mayor
John Mayor
Katie Rothlisberger
Katie Rothlisberger
Calendar Year 2007
Jamie Stanton
  • Molecular modeling methods and colorimetry
  • Surface tension instrument construction
  • Surface tension measurements of uncured silastic potting material
  • Surface tension measurements of binary solvent blends

Stephanie Coleman
Stephanie Coleman

Kara Marquez
Kara Marquez
Casie Jupe
Casie Jupe
Calendar Year 2006
Bassam Alnasleh
  • Molecular modeling methods and colorimetry
Calendar Year 2005

Douglas Parker

  • Polymer stabilization techniques