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  1. S. H. Gehrke and E. L. Cussler "Mass Transfer in pH-Sensitive Hydrogels," Chemical Engineering Science 44, 559-566 (1989).
  2. D. C. Harsh and S. H. Gehrke "Characterization of Ionic Water Absorbent Polymers: Determination of Ionic Content and Effective Crosslink Density" in Absorbent Polymer Technology, Lisa Brannon-Peppas, ed., Elsevier, Amsterdam, 103-124 (1990).
  3. B. Kabra, S. H. Gehrke, S. T. Hwang and W. Ritschel "Modification of the Dynamic Swelling Behavior of PHEMA" Journal of Applied Polymer Science., 42, 2409-2416 (1991).
  4. B. Kabra and S. H. Gehrke "Synthesis of Fast Response Poly(N-isopropylacrylamide) Gels," Polymer Communications, 32, 322-323 (1991).
  5. D. C. Harsh and S. H. Gehrke "Controlling the Swelling Characteristics of Temperature-Sensitive Cellulose Ether Hydrogels," Journal of Controlled Release, 17, 175-186 (1991).
  6. M. Palasis and S. H. Gehrke "Permeability of Temperature Sensitive Gels," Journal of Controlled Release, 18, 1-12 (1992).
  7. S. H. Gehrke, G. Agrawal and M.-C. Yang "Moving Ion Exchange Fronts in Polyelectrolyte Gels," in Polyelectrolyte Gels, R. S. Harland and R. K. Prud’homme, Eds., ACS Symposium Series 480, Washington, D.C., 211-237 (1992).
  8. D. Biren, B. Kabra and S. H. Gehrke "Effect of Initial Sample Anisotropy on the Solvent Sorption Kinetics of Glassy Poly(2-Hydroxyethyl methacrylate," Polymer, 33, 554-561 (1992).
  9. B. Kabra, M. K. Akhtar and S. H. Gehrke "Volume Change Kinetics of Temperature-Sensitive Poly(vinylmethylether) Gel," Polymer, 33, 990-995 (1992).
  10. S. H. Gehrke, M. Palasis and M. K. Akhtar "Effect of Synthesis Conditions on Properties of Poly(N-isopropylacrylamide) Gels," Polymer International, 29, 29-36 (1992).
  11. D.C. Harsh and S. H. Gehrke "Modeling Swelling Behavior of Cellulose Ether Hydrogels," in Polymeric Delivery Systems, M. El-Nokaly, D. Piatt, B. Charpentier Eds., ACS Symposium Series 520, Washington, D.C., 105-134 (1993).
  12. S. H. Gehrke "Synthesis, Equilibrium Swelling, Kinetics, Permeability and Applications of Environmentally Responsive Gels," in Responsive Gels: Volume Transitions II, K. Dusek, Ed., Advances in Polymer Science Series 110, Springer-Verlag, Heidelberg, 81-144 (1993).
  13. S. H. Gehrke, D. Biren and J. Hopkins "Evidence for Fickian Water Transport in Initially Glassy Poly(2-hydroxyethyl methacrylate)," Journal of Biomaterials Science, Polymer Edition, 6, 375-390 (1994).
  14. B. Kabra and S. H. Gehrke "Rate Limiting Steps for Solvent Sorption and Desorption by Microporous Stimuli-Sensitive Absorbent Gels," in Superabsorbent Polymers: Science and Technology, F. L. Buchholz and N. A. Peppas Eds., ACS Symposium Series 573, Washington, D.C., 76-87 (1994).
  15. S. H. Gehrke and D. C. Harsh "Environmentally Responsive Gels," in: Polymeric Materials Encyclopedia, Vol. 3, J. C. Salamone, Ed., CRC Press, Boca Raton, FL 2093-2102 (1996).
  16. S. H. Gehrke, M. Palasis, M. Lund and J. Fisher "Factors Determining Hydrogel Permeability," Annals of the New York Academy of Sciences, 831, 179-207 (1997).
  17. S. M. O'Connor and S. H. Gehrke "Synthesis and Characterization of Temperature-Sensitive HPMC Gel Spheres," Journal of Applied Polymer Science, 66, 1279-1290 (1997).
  18. B. Kabra, S. H. Gehrke and R. Spontak "Microporous Responsive HPC Gels 1. Synthesis and Microstructure," Macromolecules, 31, 2166-2173 (1998).
  19. S.H. Gehrke and D.C. Harsh "Environmentally Responsive Gels," in: Concise Polymeric Materials Encyclopedia, J.C. Salamone, Ed., CRC Press Boca Raton, FL 428-430 (1999).
  20. S. M. O'Connor and S. H. Gehrke "Particle Growth Analysis as a Characterization Method for Gel Particles Produced in Suspension Reactors," Polymer, 42, 1541-1546 (2001).
  21. N. Kato and S. H. Gehrke "Rate-Limiting Steps In The Volume Change Kinetics Of Fast Responsive Microporous Gels" in Reflexive polymers and hydrogels: Understanding and designing fast-responsive polymeric systems, K. Park and R. Mrsny, Eds., CRC Press, Boca Raton, FL 189-215 (2004).
  22. N. Kato and S. H. Gehrke "Microporous, fast response cellulose ether hydrogel prepared by freeze-drying" Colloids and Surfaces B-Biointerfaces, 38, 191-196 (2004).
  23. J. A. Hinkley, L. D. Morgret, S. H. Gehrke "Tensile Tests of Two Responsive Hydrogels," Polymer, 45, 8837-8843 (2004).
  24. T. C. Suekama, V. Aziz, Z. Mohammadi, C. Berkland, S. H. Gehrke, M. S. "Synthesis and Characterization of Poly(N-vinyl formamide) Hydrogels—A Potential Alternative to Polyacrylamide Hydrogel" J Polymer Science: Part A Polymer Chemistry in print online (2012). DOI: 10.1002/pola.26401
  25. S. H. Gehrke and P. I. Lee "Hydrogels for Drug Delivery" in Specialized Drug Delivery Systems, Manufacturing and Production Technology, Praveen Tyle, ed., Marcel Dekker, New York 333-392 (1990).
  26. W. A. Ritschel, A. Sabouni, S. H. Gehrke, S. T. Hwang "Permeability of 3H-Water Across a Porous Polymer Matrix Used as a Rate-Limiting Shell in Compression-Coated Tablets" Journal of Controlled Release, 12, 97-102 (1990).
  27. C.-L. Cheng, S. H. Gehrke and W. A. Ritschel "Development of an Azopolymer Based Colonic Release Capsule for Delivering Proteins/Macromolecules," Methods and Findings in Experimental and Clinical Pharmacology, 16 , 271-278 (1994).
  28. T. D. Reynolds, S. H. Gehrke, A. S. Hussain, L. S. Shenouda "Polymer Erosion and Drug Release Characterization of Hydroxypropyl Methylcellulose Matrices," Journal of Pharmaceutical Sciences, 87, 1115-1123 (1998).
  29. S. H. Gehrke, L. Uhden and J. M. McBride "Enhanced Loading and Activity Retention in Hydrogel Delivery Systems," Journal of Controlled Release, 55, 21-33 (1998).
  30. S. H. Gehrke, J. P. Fisher, J. F. McBride, S. M. O'Connor and H. Zhu "Gel Coated Catheters as Drug Delivery Systems," in Intelligent Materials & Novel Concepts for Controlled Release Technologies, S. Dinh and J. DeNuzzio, Eds., ACS Symposium Series, Washington, D.C., 728, 43-53 (1999).
  31. S. H. Gehrke "Synthesis and Properties of Hydrogels for Used for Drug Delivery," Transport in Pharmaceutical Sciences, G.L. Amidon and P.I. Lee, E.M. Topp Eds., Marcel Dekker, New York, 473-546 (2000).
  32. L.Z. Zhang, R. Balasundaram, S. H. Gehrke, S.Y. Jiang, "Nonequilibrium Molecular Dynamics Simulations of Confined Fluids in Contact with the Bulk," Journal of Chemical Physics, 114, 6869-6877 (2001).
  33. Q. Zhang, J. Zheng, A. Shevade, L. Zhang, S. Gehrke, G. S. Heffelfinger, S. Jiang, "Transport Diffusion of Liquid Water and Methanol Through Membranes." Journal of Chemical Physics, 117, 808-818 (2002).
  34. J. Zheng, R. Balasundaram, S. H. Gehrke, G. S. Heffelfinger, W. A. Goddard III, S. Jiang, "Cell Multipole Method for Molecular Simulations in Bulk and Confined Systems," Journal of Chemical Physics, 118, 5347-5355 (2003).
  35. S. H. Gehrke E. D. Oliveira and S. A. Hagan, "Influence of Microstructure on the Permeability and Modulus of Responsive Biopolymer Gels," In: Advances in Biomaterials and Drug Delivery Systems, GH Hsuie, T. Okano, UY Kim, HW Sung, N. Yui and KD Park, Eds. Princeton International Publishing Co., Taipei, TW, 517-526 (2003).
  36. Hart, DS and Gehrke, SH "Thermally associating polypeptides designed for drug delivery produced by genetically engineered cells," Journal of Pharmaceutical Sciences, 96, 484-516 (2007).
  37. Z. Mohammadi, S. X. Xie, A. L. Golub, S. H. Gehrke, C. Berkland "Siderophore-Mimetic Hydrogel for Iron Chelation Therapy," J Applied Polymer Science, 121(3) 1384-1392 (2011).
  38. S. H. Gehrke, G. P. Andrews, E. L. Cussler "Chemical Aspects of Gel Extraction," Chemical Engineering Science, 41 (1986) 2153-2160.
  39. S. H. Gehrke, J. F. Johnson, J. Robeson and N. Vaid "Protein Separation by Selective Gel Sorption" Biotechnology Progress, 7, 355-358 (1991).
  40. S. H. Gehrke, L.H. Lyu and K. Barnthouse "Dewatering Fine Coal Slurries by Gel Extraction," Separation Science & Technology, 33, 1467-1485 (1998).
  41. S. H. Gehrke, N. Vaid and J. M. McBride " Protein Sorption and Recovery by Hydrogels Using Principles of Two Aqueous Phase Protein Extraction" Biotechnology & Bioengineering, 58, 416-427 (1998).
  42. S. M. O'Connor, S. H. Gehrke, S. Patuto, and G. Retzinger "Macrophage Adherance to Polystyrene Beads coated with Pluronic® Block Copolymers," Annals of the New York Academy of Sciences, 831, 138-144 (1997).
  43. S. M. O’Connor, S. H. Gehrke, G. Retzinger "Ordering of Poly(ethylene oxide)/Poly(propylene oxide) Triblock Copolymers in Condensed Films," Langmuir, 15, 2580-2585 (1999).
  44. S.M. O'Connor, A.P. DeAnglis, S.H. Gehrke, G.S. Retzinger, "Adsorption of Plasma Proteins onto Poly(ethylene oxide)/Poly(propylene oxide) Triblock Copolymer Films. A Focus on Fibrinogen," Biotechnol Appl Biochem., 31, 185-196 (2000).
  45. C. S. Putka, S. H. Gehrke, M. Willis, D. Stafford, J. Bryant "Recovery and Separation of Cell Lysate Proteins using Hydrogels, Guided by Aqueous Two Phase Extraction Principles," Biotechnology & Bioengineering, 80, 139-143 (2002).
  46. B. J. DeKosky, N. H. Dormer, B.S., G. C. Ingavle, C. H. Roatch, J. Lomakin, M. S. Detamore, S. H. Gehrke "Hierarchically Designed Agarose and Poly(ethylene glycol) Interpenetrating Network Hydrogels for Cartilage Tissue Engineering," Tissue Engineering C, 16(6), 1533-1542 (2010).
  47. G. C. Ingavle, N. H. Dormer, S. H. Gehrke, M. S. Detamore, "Using chondroitin sulfate to improve the viability and biosynthesis of chondrocytes encapsulated in interpenetrating network (IPN) hydrogels of agarose and poly(ethylene glycol) diacrylate" J Mater. Sci.: Mater. Med. 23, 157-170 (2012).
  48. E. D. Oliveira, S. G. Hirsch, R. J. Spontak and S. H. Gehrke "Influence of Polymer Conformation on the Modulus and Morphology of Polyallylamine and Poly(α, L-lysine) Hydrogels" Macromolecules, 36, 6189-6201 (2003).
  49. Z. Zhong, S. X. Sun, S. A. Hagan, S. H. Gehrke "Soy Protein Isolate/Polycaprolactone Blends: Compatibility Reactions and Water Absorption Mechanisms," Transactions of the American Society of Agricultural Engineers, 48, 1281-1286 (2005).
  50. G.R. Snider, J. Lomakin, M. Singh, S.H. Gehrke, and M.S. Detamore, "Regional Dynamic Tensile Properties of the TMJ Disc," Journal of Dental Research, 87(11), 1053-1057, (2008).
  51. D’Souza, AJM, Hart, DS, Middaugh, CR, Gehrke, SH "Characterization of the changes in secondary structure and architecture of elastin-mimetic triblock polypeptides during thermal gelation," Macromolecules, 39, 7084-7091 (2006).
  52. Y. Arakane, J. Lomakin, R. W. Beeman, S. Muthukrishnan, S. H. Gehrke, M. R. Kanost, K. J. Kramer, "Molecular and Functional Analyses of Amino Acid Decarboxylases Involved in Cuticle Tanning in Tribolium castaneum," Journal of Biological Chemistry, 284(24), 16584-16594 (2009).
  53. J. Lomakin, Y. Arakane, M. R. Kanost, K. J. Kramer, S. H. Gehrke, "Mechanical Properties of Elytra from Tribolium castaneum Wild-type and Body Color Mutant Strains" Journal of Insect Physiology, 56(12), 1901-1906 (2010).
  54. J. Lomakin, P. Huber, C. Eichler, Y. Arakane, K. J. Kramer, R. W. Beeman, M. R. Kanost, S. H. Gehrke "Mechanical Properties of the Beetle Elytron, a Biological Composite Material," Biomacromolecules, 12(2), 321-335 (2011).
  55. Y. Arakane, J. Lomakin, S. H. Gehrke, Y. Hiromasa, J. M. Tomich, S. Muthukrishnan, R. W. Beeman, K. J. Kramer, M. R. Kanost "Formation of Rigid, Non-Flight Forewings (Elytra) of a Beetle Requires Two Major Cuticular Proteins," PLOS Genetics, 8(4), 612-622 (2012).

Patents Issued

  1. B. Kabra and S. Gehrke, "Superabsorbent Foams and Methods for Producing Same," U.S. Patent No. 5,573,994, Issued 11/12/96.
  2. S. H. Gehrke, E. C. Lupton, M. E. Schiller, L. Uhden and N. Vaid, "Enhanced Loading of Solutes Into Polymer Gels and Methods of Use," U.S. Patent No. 5,603,955, Issued 2/18/97.
  3. S. H. Gehrke, E. C. Lupton, M. E. Schiller, L. Uhden and N. Vaid, "Compositions and Methods for Protecting Compound Activity," U.S. Patent No. 5,674,521, Issued 10/7/97.
  4. B. Kabra and S. Gehrke, "Superabsorbent Foams and Methods for Producing the Same," U.S. Patent 6,027,795, Issued 2/22/2000.
  5. B. Kabra and S. Gehrke, "Microporous Fast Response Gels and Methods of Use," U.S. Patent 6,030,442, Issued 2/29/2000.
  6. S. Gehrke, J. McBride and J. Fisher "Temperature Controlled Solute Delivery System," U.S. Patent 6,733,788, Issued 5/11/2004.
  7. S. Gehrke, J. McBride and J. Fisher "Temperature Controlled Solute Delivery System," U.S. Patent 7,407,671, Issued 8/5/2008.
  8. M. Detamore and S. Gehrke "Hydrogel Networks Having Living Cells Encapsulated Therein," U.S. Patent 8,293,510, Issued 10/23/2012.