王文俊教授

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Steven J. Severtson, Professor

BBE Severson Photo 2104 Kaufert Laboratory
University of Minnesota
2004 Folwell Avenue 
St. Paul, MN 55108

Phone: (612) 625-5265 
Email: sever018@umn.edu

Ph.D. IPST, Currently IPST at Georgia Tech
M.S.M.E., Georgia Institute of Technology
B.A., Augsburg College (Minneapolis, MN), Chemistry Major 



Areas of Interest

Surface and Colloid Science

Current research projects include the study of wetting and adhesion involving soft substrates, characterization of small molecule migration in polymer films and development of environmentally benign coatings and adhesives.

Courses Taught

  • BBE 4301/5301 Surface and Colloid Science in Bio-based Products Manufacturing
  • BBE 4303/5303 Bio-Based Materials Science
  • BBE 4404/5404 Bio-based Composites Engineering

Publications (2006-2011)

Pu, G. and Severtson, S. J. Dependence of Wetting Behavior on the Thickness of Highly Viscoelastic Films, Journal of Physical Chemistry C, 115(38), 18729-18735, 2011.

Zhang, J., Houtman, C. J. and Severtson, S. J. Characterizing the Distribution of Sodium Alkyl Surfactant Homologues in Water-Based Pressure-Sensitive Adhesive Films, Journal of Physical Chemistry B, 115(25), 8138-8144, 2011.

Zhang, J., Pu, G. and Severtson, S. J. Anti-Oil-Pollution Superhydrophobic Surfaces, Applied Materials and Interfaces, 2(10), 2880–2883, 2010.

Pu, G., Ai, J. and Severtson, S. J. Drop Behavior on a Thermally-Stripped Acrylic Polymer: Influence of Surface Tension induced Wetting Ridge Formation on Retention and Running, Langmuir, 26(15), 12696–12702, 2010.

Zhang, J., Dubay, M. R., Severtson, S. J. and Houtman, C. J. Sulfonated Amphiphilic Block Copolymers: Synthesis, Self-Assembly in Water, and Application as Stabilizer in Emulsion Polymerization, Macromolecules, 42(14), 5080-5090, 2009.

Xu, G. H., Dong, J., Zhang, J., Severtson, S. J., Houtman, C. J. and Gwin, L. E., Modifications of Surfactant Distributions and Surface Morphologies in Latex Films due to Moisture Exposure, Journal of Physical Chemistry B, 113(30), 10189-10195, 2009.

Pu, G. and Severtson, S. J., Dependency of Contact Angle Hysteresis on Crystallinity for n-Alkane Substrates, Journal of Physical Chemistry C 113(16), 6673-6680, 2009.

Pu, G. and Severtson, S. J., Variety of Wetting Line Propagations demonstrated on a Viscoelastic Substrate, Applied Physics Letters 94, 134101-134103, 2009.

Xu, G. H., Dong, J., Zhang, J., Severtson, S. J., Houtman, C. J., Gwin, L. E., Characterizing the Distribution of Nonylphenol Ethoxylate Surfactants in Water-based Pressure-Sensitive Adhesive Films using Atomic-Force and Confocal Raman Microscopy, Journal of Physical Chemistry B 112(38), 11707-11914, 2008.

Pu, G. and Severtson, S. J., Dynamic Stick-and-Break Wetting Behavior on the Surface of a Highly Viscoelastic Polymer, Langmuir24(9), 4685-4692, 2008.

Guo, J., Severtson, S. J., Gwin, L. E., Houtman, C. J., Role of Adhesive Formulation and Laminate Design in Determining Removal Efficiencies of Emulsion-type Pressure Sensitive Adhesive Films from Recycling Operations, Industrial and Engineering Chemistry Research 47(8), 2612-2617, 2008.

Wang, J., Calhoun, M. D. and Severtson, S. J., Dynamic Rheological Study of Paraffin Wax and its Organo-Clay Nanocomposites, Journal of Applied Polymer Science 108(4), 2564-2570, 2008.

Pu, G., Guo, J., Gwin, L. E. and Severtson, S. J., Mechanical Pinning of Liquids through Inelastic Wetting Ridge Formation on Thermally Stripped Acrylic Polymers, Langmuir 23(24), 12142-12146, 2007.

Wang J., Severtson, S. J., and Geil, P. H., Brittle–Ductile Transitions and the Toughening Mechanism in Paraffin/Organoclay Nanocomposites, Materials Science and Engineering A 467(1-2), 172-180, 2007.

Guo, J., Severtson, S. J. and Gwin, L. E., Optimizing the Monomer Composition of Acrylic Water-based Pressure Sensitive Adhesives to Minimize their Impact on Recycling Operations, Industrial and Engineering Chemistry Research 46(9), 2753-2759, 2007.

Wang, J., Severtson, S. J. and Stein, A., Significant and Concurrent Enhancement of Stiffness, Strength, and Toughness for Paraffin Wax through Organoclay Addition, Advanced Materials 18(12), 1585-1588, 2006.

Conference Proceedings (2006-2009)

Severtson, S. J., Xu, G. H., Zhang, J., Houtman, C. J., Gwin, L. E., Migration of Surfactants in Pressure Sensitive Adhesive Films and the Impact on Performance Properties. Proceedings of the Pressure Sensitive Tape Council’s TECH XXXII, held in Orlando, FL, May 13th - 15th , 2009.

Severtson, S. J., Guo, J., Gwin, L. E., Houtman, C. J., and Kroll, M. S., Recycling Compatible Hot-Melt and Water-Based Pressure Sensitive Adhesives. Proceedings of the Pressure Sensitive Tape Council’s TECH XXXI, held in Baltimore, MD, May 7th - 9th , 2008.

Houtman, C., Guo, J., Severtson, S., Xu, H., Gwin, L., Properties of Water-Based Acrylic Pressure Sensitive Adhesive Film in Aqueous Environments, 8th TAPPI Research Forum on Recycling held in Niagara Falls, Ontario, Canada, September 23rd - 26th , 2007.

Pu, G., Wang, J., Severtson, S. J. Properties of Paraffin Wax/Montmorillonite Nanocomposite Coatings. NSTI Nanotech, held in Santa Clara, CA, May 20th - 24th , 2007.

Verhulst, R. P., Severtson, S. J., Guo, J. and Houtman, C. J. Properties of Pressure Sensitive Adhesives Found in Paper Recycling Operations. 2006 TAPPI Engineering, Pulping and Environmental Conference held in Atlanta, GA, November 8th – 11th , 2006.

Patents (2006-2009)

Thompson, J. O., Verett, S. P., Severtson, S. J. and Loy, J. E., Method for inhibiting calcium salt scale, United States Patent 7,300,542 issued November 27, 2007.

Thompson, J. O., Verett, S. P., Severtson, S. J. and Loy, J. E., Method for inhibiting calcium salt scale, United States Patent 7,172,677 issued February 7, 2007.