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Sitaraman Krishnan

In this Section

Assistant Professor
Chemical and Biomolecular Engineering
229 CAMP
Clarkson University
PO Box 5705
Potsdam , NY 13699-5705

Phone: 315-268-6661
Fax: 315-268-6654
E-mail: skrishna@clarkson.edu
Department Web site

Educational Background

Ph.D., Chemical Engineering, Lehigh University
B. S., Chemical Engineering, University Institute of Chemical Technology, Mumbai


Professional Experience
Postdoctoral Research, Materials Science and Engineering, Cornell University

 

Professional Affiliations

  • American Chemical Society (ACS)
  • American Institute of Chemical Engineers (AIChE)
  • Society of Plastics Engineers (SPE)
  • American Society for Engineering Education (ASEE)

Research Interests

  • Polymeric materials
  • Surface and colloid science
  • Nanostructured thin films, coatings, and membranes
  • Block copolymer and functional copolymer synthesis
  • Protein and cell interactions with materials
  • Microencapsulation

Experimental Techniques

  • Controlled radical polymerization, ionic polymerization, and surface initiated polymerization
  • Thin film processing and characterization
  • Synthesis of polymer nano- and microparticle dispersions
  • Surface modification using self-assembled monolayers, polymer brushes, and biomolecules


Conducted Research on

  • Anti-biofouling surfaces
  • Stimulus-responsive surfaces
  • Liquid crystalline polymers
  • X-ray absorption and X-ray scattering by polymer thin films
  • Protein immobilization and patterning
  • Emulsion polymerization
  • Stabilization and aggregation of polymer colloids
  • Polymer gels

Awards

  • Award for outstanding talk at the symposium “Polymers for Bioactive Surfaces” at the American Chemical Society National Meeting, Washington, DC, 2005.
  • The Ticona Award for outstanding graduate student research in polymer science and engineering, 2002.
  • The Textile Veterans Association Award for research excellence in the field of polymer science, 2001.

Selected Publications

S. Krishnan, C. J. Weinman, and C. K. Ober, “Advances in Polymers for Antibiofouling Surfaces,” J. Mater. Chem., DOI: 10.1039/b801491d, (2008).


J. A. Finlay, S. Krishnan, M. E. Callow, J. A. Callow, R. Dong, N. Asgill, K. Wong, E. J. Kramer, and C. K. Ober, “ Settlement of Ulva Zoospores on Patterned Fluorinated and PEGylated Monolayer Surfaces,” Langmuir, 24, 503-510, (2008).


R. Dong, S. Krishnan, C. K. Ober, B. A. Baird, and M. Lindau, “Patterned Biofunctional Polymer Brushes,” Biomacromolecules, 8, 3082-3092, (2007).


M. Y. Paik, S. Krishnan, F. You, X. Li, A. Hexemer, Y. Ando, S. H. Kang, D. A. Fischer, E. J. Kramer, and C. K. Ober, “Surface Organization, Light Driven Surface Changes and Stability of Semifluorinated Azobenzene Polymers,” Langmuir, 23, 5110-5119, (2007).


P. Busch, S. Krishnan, M. Paik, G. E. S. Toombes, D.-M. Smilgies, S. M. Gruner, and C. K. Ober, “Surface Induced Tilt Propagation in Thin Films of Semifluorinated Liquid Crystalline Side Chain Block Copolymers,” Macromolecules, 40, 81-89, (2007).


S. Krishnan, R. J. Ward, A. Hexemer, K. E. Sohn, K. L. Lee, E. R. Angert, D. A. Fischer, E. J. Kramer, and C. K. Ober, “Surfaces of Fluorinated Pyridinium Block-Copolymers with Enhanced Antibacterial Activity,” Langmuir, 22, 11255-11266, (2006).


S. Krishnan, A. Ramakrishnan, A. Hexemer, J. A. Finlay, K. E. Sohn, R. Perry, C. K. Ober, E. J. Kramer, M. E. Callow, J. A. Callow, and D. A. Fischer, “Anti-Biofouling Properties of Comblike Block Copolymers with Amphiphilic Side Chains,” Langmuir, 22, 5075-5086, (2006).


S. Krishnan, N. Wang, C. K. Ober, J. A. Finlay, M .E. Callow, J. A. Callow, A. Hexemer, K. E. Sohn, E. J. Kramer, and D. A. Fischer, “Comparison of the Fouling Release Properties of Hydrophobic Fluorinated and Hydrophilic PEGylated Block Copolymer Surfaces: Attachment Strengths of the Diatom Navicula and the Green Alga Ulva,” Biomacromolecules, 7, 1449-1462, (2006).


L. R. Pattison, A. Hexemer, E. J. Kramer, S. Krishnan, P. M. Petroff, and D. A. Fischer, “Probing the Ordering of Semiconducting Fluorene-Thiophene Copolymer Surfaces on Rubbed Polyimide Substrates by Near-Edge X-ray Absorption Fine Structure,” Macromolecules, 39, 2225-2231, (2006).


S. Krishnan, A. Klein, M. S. El-Aasser, and E. D. Sudol, “Ultracentrifugation Method to Measure Water-Soluble Monomer Incorporation in Latex,” Colloid Polym. Sci., 283, 836-844, (2005).


S. Krishnan, Y.-J. Kwark, and C. K. Ober, “Fluorinated Polymers: Liquid Crystalline Properties, and Applications in Lithography,” Chemical Record, 4, 315-330, (2004).


S. Krishnan, A. Klein, M. S. El-Aasser, and E. D. Sudol, “Effects of Agitation on Oxygen Inhibition, Particle Nucleation, Reaction Rates, and Molecular Weights in Emulsion Polymerization of n-Butyl Methacrylate,” Ind. Eng. Chem. Res., 43, 6331-6342, (2004).


S. Krishnan, A. Klein, M. S. El-Aasser, and E. D. Sudol, “Influence of Chain Transfer Agent on the Cross-Linking of Poly(n-Butyl Methacrylate-co-N-Methylol acrylamide) Latex Particles and Films,” Macromolecules, 36, 3511-3518, (2003).


S. Krishnan, A. Klein, M. S. El-Aasser, and E. D. Sudol, “Effect of Surfactant Concentration on Particle Nucleation in Emulsion Polymerization of n-Butyl Methacrylate,” Macromolecules, 36, 3152-3159, (2003).


S. Krishnan, A. Klein, M. S. El-Aasser, and E. D. Sudol, “Relative Importance of the Effects of Seed and Feed Stage Agitations on Latex Properties in Semibatch Emulsion Copolymerization of n-Butyl Methacrylate and N-Methylol Acrylamide,” Polym. React. Eng., 11, 359-378, (2003).


S. Krishnan, A. Klein, M. S. El-Aasser, and E. D. Sudol, “Agitation Effects in Emulsion Copolymerization of n-Butyl Methacrylate and N-Methylol Acrylamide,” Polym. React. Eng., 11, 335-357, (2003).



Preprints


S. Krishnan, J. A. Finlay, D. Park, C. J. Weinman, R. Dong, K. Wong, N. Asgill, M. E. Callow, J. A. Callow, D. L. Handlin, C. L. Willis, L. Brewer, D. E. Wendt, K. E. Sohn, E. J. Kramer, and C. K. Ober, “Ambiguous Polymeric Surfaces for Marine Antifouling Applications,” Polym. Mater Sci. Eng. Preprints, 98, 83-84, (2008).


C. J. Weinman, J. A. Finlay, D. Park, M. Y. Paik, S. Krishnan, B. R. Fletcher, M. E. Callow, J. A. Callow, D. L. Handlin, C. L. Willis, D. A. Fischer, K. E. Sohn, E. J. Kramer, and C. K. Ober, “Antifouling ABC Triblock Copolymers with Grafted Functionality,” Polym. Mater Sci. Eng. Preprints, 98, 639-641, (2008).


C. J. Weinman, S. Krishnan, D. Park, M. Y. Paik, K. Wong, D. A. Fischer, D. L. Handlin Jr., G. L. Kowalke, D. E. Wendt, K. E. Sohn, E. J. Kramer, and C. K. Ober, “Antifouling Block Copolymer Surfaces that Resist Settlement of Barnacle Larvae,” Polym. Mater Sci. Eng. Preprints, 96, 597-598, (2007).


S. Krishnan, M. Y. Paik, C. K. Ober, A. Hexemer, K. E. Sohn, E. J. Kramer, M. Häckel, L. Kador, D. Kropp, H.-W. Schmidt, “Tailoring Surface Properties Using Functional Side Groups on Block Copolymers,” Polym. Mater. Sci. Eng. Preprints, 95, 105-106, (2006).


S. Krishnan, C. K. Ober, A. Hexemer, E. J. Kramer, and D. A. Fischer, “Compositional Depth Profiling of Block Copolymer Surfaces Using NEXAFS,” Polym. Mater. Sci. Eng. Preprints, 94, 672-673, (2006).


S. Krishnan, J. A. Finlay, A. Hexemer, N. Wang, C. K. Ober, E. J. Kramer, M. E. Callow, J. A. Callow, and D. A. Fischer, “Interaction of Ulva and Navicula Marine Algae with Surfaces of Pyridinium Polymers with Fluorinated Side-chains,” Polymer Preprints, 46, 1248-1249, (2005).


S. Krishnan, C. K. Ober, R. Ayothi, Q. Lin, M. Paik, A. Hexemer, E. J. Kramer, and D. A. Fischer, “Hydrophobic and Hydrophilic Fluoropolymers as Non-Adhesive Interfaces in Marine Biofouling,” Polymer Preprints, 46, 613-614, (2005).


Q. Lin, S. Krishnan, M. Paik, P. Busch, C. K. Ober, A. Hexemer, K. E. Sohn, E. J. Kramer, G. L. Kowalke, and D. E. Wendt, “Semifluorinated Triblock Copolymers as Surface Active Components for Multilayer Marine Antifouling Coatings,” Polymer Preprints, 46, 635-636, (2005).


S. Krishnan, C. K. Ober, K. L. Lee, E. R. Angert, A. Hexemer, E. J. Kramer, “Antibacterial Coatings Based on Quaternized Poly(4-Vinylpyridine) Block Copolymers,” Polym. Mater. Sci. Eng. Preprints, 91, 814-815, (2004).


C. K. Ober, S. Krishnan, J. P. Youngblood, A. Hexemer, E. J. Kramer, J. A. Finlay, M. E. Callow, “Surface-Active Materials with Antifouling Properties,” Polymer Preprints, 45, 103-104, (2004).



Patents


C. K. Ober, S. Krishnan, Q. Lin, and E. J. Kramer, “Polymers Containing Quaternized Nitrogen,” U.S. Pat. Appl. Publ., US/2007/0106040 A1, (2007).


C. K. Ober, S. Krishnan, and Q. Lin, “Polymers and Polymer Coatings,” U.S. Pat. Appl. Publ., US/2007/0053867 A1, (2007).


C. K. Ober, S. Krishnan, and Q. Lin, “Polymer Coatings,” U.S. Pat. Appl. Publ., US/2006/0083854 A1, (2006).