Publications

  • Tallury, S.S., Spontak, R.J., and Pasquinelli, M.A., "Dissipative Particle Dynamics of Triblock Copolymer Melts:A Midblock Conformational Study at Moderate Segregation," J. Chem. Phys., in press.
  • Spontak, R.J., "Physically Networked Block Copolymer Systems as Dielectric Elastomers," Introduction to Transducers and Artificial Muscles Based on Electromechanically Active Polymers (F. Carpi, ed.), Springer, in press.
  • Cai, X., Genzer, J., and Spontak, R.J., "Evolution of Homopolymer Thin-Film Instability on Surface-Anchored Diblock Copolymers Varying in Composition," Langmuir, 30, 11689 (2014).
  • Tallury, S.S., Mineart, K.P., Woloszczuk, S., Williams, D.N., Thompson, R.B., Pasquinelli, M.A., Banaszak, M., and Spontak, R.J., "Molecular-Level Insights into Asymmetric Triblock Copolymers: Network and Phase Development," J. Chem. Phys., 141, 121103 (2014).
  • Subramani, K.B., Cakmak, E., Spontak, R.J., and Ghosh, T.K., "Enhanced Electroactive Response of Unidirectional Elastomeric Composites with High-Dielectric-Constant Fibers," Adv. Mater.,26, 2949 (2014).
  • Toprakci, H.A.K., Kalanadhabhatla, S.K., Spontak, R.J., and Ghosh, T.K., "Polymer Nanocomposites Containing Carbon Nanofibers as Soft Printable Sensors Exhibiting Strain-Reversible Piezoresistivity," Adv. Funct. Mater.,23, 5536 (2013).
  • Piephoff, D.E., Rasmussen, K.Ø., and Spontak, R.J., "Nanoscale Distribution and Segregation of Midblock-SelectiveCo-Penetrants in ABA Triblock Copolymer Lamellae," RSC Adv., 3, 22863 (2013).
  • Mineart, K.P., Yiliang, L., Desai, S.C., Krishnan, A.S., Spontak, R.J., and Dickey, M.D., "Ultrastretchable, Cyclable and Recyclable 1- and 2-Dimensional Conductors Based on Physically Cross-linked Thermoplastic Elastomer Gels," Soft Matter,9, 7695 (2013).
  • Vargantwar, P.H., Brannock, M.C., Tauer, K., and Spontak, R.J., "Midblock-Sulfonated Triblock Ionomers Derived from a Long-Chain Poly[styrene-b-butadiene-b-styrene] Triblock Copolymer," J. Mater. Chem. A, 1, 3430 (2013).                                                                                       
  • Vargantwar, P.H., Brannock, M.C., Smith, S.D., and Spontak, R.J., "Midblock Sulfonation of a Model Long-Chain Poly(p-tert-butylstyrene-b-styrene-b-p-tert-butylstyrene) Triblock Copolymer," J. Mater. Chem., 22, 25262 (2012).
  • Krishnan, A.S., Vargantwar, P.H., and Spontak, R.J., "Thermorheological Behavior of Coexisting Physical Networks: Combining SAFIN and SAMIN Organogels," Soft Matter, 8, 12025 (2012).
  • Krishnan, A.S., Smith, S.D., and Spontak, R.J., "Ternary Phase Behavior of a Triblock Copolymer in the Presence of an Endblock-Selective Homopolymer and a Midblock-Selective Oil," Macromolecules, 45, 6056 (2012).
  • Vargantwar, P.H., Ozcam, A.E., Ghosh, T.K., and Spontak, R.J., "Prestrain-free Dielectric Elastomers based on Acrylic Thermoplastic Elastomer Gels: A Morphological and (Electro)Mechanical Property Study," Adv. Funct. Mater., 22, 2100 (2012).
  • Roskov, K.E., Atkinson, J., Bronstein, L.M., and Spontak, R.J., "Magnetic Field-Induced Alignment of Nanoparticles in Electrospun Microfibers," RSC Adv., 2, 4603 (2012).
  • Gozen, A.O., Genzer, J., and Spontak, R.J., "Interfacial Stabilization of Bilayered Nanolaminates by Asymmetric Block Copolymers," Appl. Phys. Lett., 100, 101602 (2012).
  • Vargantwar, P.H., Roskov, K.E., Ghosh, T.K., and Spontak, R.J., "Enhanced Biomimetic Performance of Ionic Polymer-Metal Composite Actuators Prepared with Nanostructured Block Ionomers," Macromol. Rapid Commun., 33, 61 (2012).
  • Arvidson, S.A., Roskov, K.E., Patel, J.J., Spontak, R.J., Gorga, R.E., and Khan, S.A., "Modification of Melt-Spun Isotactic Polypropylene and Poly(lactic acid) Bicomponent Filaments with a Premade Block Copolymer," Macromolecules, 45, 913 (2012).
  • Ozcam, A.E., Roskov, K.E., Genzer, J., and Spontak, R.J., "Responsive PET Nano/ Microfibers via Surface-Initiated Polymerization," ACS Appl. Mater. Interfaces, 4, 59 (2012).
  • Krishnan, A.S. and Spontak, R.J., "Factors Affecting Time-Composition Equivalence in Ternary Block Copolymer/Cosolvent Systems," Soft Matter, 8, 1334 (2012).
  • Vargantwar, P.H., Brelander, S.M., Krishnan, A.S., Ghosh, T.K., and Spontak, R.J., "(Electro)Mechanical Behavior of Selectively Solvated Diblock/Triblock Copolymer Blends," Appl. Phys. Lett., 99, 242901 (2011).
  • Roskov, K.E., Kozek, K.A., Wu, W.-C., Chhetri, R.K., Oldenburg, A.L., Spontak, R.J., and Tracy, J.B., "Long-Range Alignment of Gold Nanorods in Electrospun Nano/Microfibers," Langmuir, 27, 13965 (2011).
  • Krishnan, A.S., Vargantwar, P.H., Ghosh, T.K., and Spontak, R.J., "Electroactuation of Solvated Triblock Copolymer Dielectric Elastomers: Decoupling the Roles of Mechanical Prestrain and Specimen Thickness," J. Polym. Sci. B: Polym. Phys., 49, 1629 (2011).
  • Krishnan, A.S., van Zanten, J.H., Seifert, S., Lee, B., and Spontak, R.J., "Selectively-Solvated Triblock Copolymer Networks under Biaxial Strain," Appl. Phys. Lett., 99, 101908 (2011).
  • Gozen, A.O., Zhou, J., Roskov, K.E., Shi, A.-C., Genzer, J., and Spontak, R.J., "Block Copolymer Self-Organization vs. Interfacial Modification in Bilayered Thin-Film Laminates," Soft Matter, 7, 3268 (2011).
  • Vargantwar, P.H., Shankar,R., Krishnan, A.S., Ghosh,T.K., and Spontak,R.J., "Exceptional Versatility of Solvated Block Copolymer/Ionomer Networks as Electroactive Polymers," Soft Matter, 7, 1651 (2011).
  • Krishnan, A.S., Seifert, S., Lee, B., Khan, S.A., and Spontak, R.J., “Cosolvent-Regulated Time-Composition Rheological Equivalence in Block Copolymer Solutions," Soft Matter, 6, 4331 (2010).
  • Jinnai, H., Spontak, R.J., and Nishi, T., "Transmission Electron Microtomography and Polymer Nanostructures," Macromolecules, 43, 1675 (2010).
  • Peng, Q., Sun, X.-Y., Spagnola, J.C., Saquing, C., Khan, S.A., Spontak, R.J., and Parsons, G.N., "Bi-directional Kirkendall Effect in Coaxial Microtube Assemblies Fabricated by Atomic Layer Deposition," ACS Nano, 3, 546 (2009).
  • Shankar, R., Klossner, R.R., Weaver, J.T., Koga, T., van Zanten, J.H., Krause, W.E., Colina, C.M., Tanaka, F., and Spontak, R.J., "Competitive Hydrogen-Bonding in Polymer Solutions with Mixed Solvents," Soft Matter, 5, 304 (2009).
  • Aberg, C.M., Seyam, M.A., Lassell, S.A., Bronstein, L.M., and Spontak, R.J., "In-situ Growth of Pd Nanoparticles in Cross-linked Polymer Matrices," Macromol. Rapid Commun., 29, 1926 (2008).
  • Wei, B., Gurr, P.A., Gozen, A.O., Blencowe, A., Solomon, D.H., Qiao, G.G., Spontak, R.J., and Genzer, J., "Autophobicity-Driven Surface Segregation and Patterning of Core-Shell Microgel Particles," Nano Lett.,8, 3010 (2008).
  • Sun, X.-Y., Nobles, L.R., Börner, H.G., and Spontak, R.J., "Field-Driven Surface Segregation of Biofunctional Species on Electrospun PMMA/PEO Microfibers," Macromol. Rapid Commun., 29, 1455 (2008).
  • Shankar, R., Krishnan, A.S., Ghosh,T.K., and Spontak,R.J., "Triblock Copolymer Organogels as High-Performance Dielectric Elastomers," Macromole­cules, 41, 6100 (2008).
  • Walker, T.A., Frankowski, D.J., and Spontak, R.J., "Thermodynamics and Kinetic Processes of Polymer Blends and Block Copolymers in the Presence of Pressurized Carbon Dioxide," Adv. Mater., 20, 879 (2008).
  • Wang, X., Wang, H., Frankowski, D.J., Lam, P.G., Welch, P.M., Winnik, M.A., Hartmann, J., Manners, I., and Spontak, R.J., "Growth and Crystallization of Metal-Containing Block Copolymer Nanotubes in a Selective Solvent," Adv. Mater., 19, 2279 (2007).
  • Shankar, R., Ghosh, T.K., and Spontak, R.J., "Electroactive Nanostructured Polymers as Tunable Actuators," Adv. Mater., 19, 2218 (2007).
  • Shankar, R.,Ghosh,T.K., and Spontak,R.J., "Dielectric Elastomers as Next-Generation Polymeric Actuators," Soft Matter, 3, 1116 (2007).
  • Frankowski, D.J., Capracotta, M.D., Martin, J.D., Khan, S.A., and Spontak, R.J., "Stability of Organically-Modified Montmorillonites and Their Polystyrene Nanocomposites after Prolonged Thermal Treatment," Chem. Mater., 19, 2757 (2007).
  • Maynor, B.W., LaRue, I., Hu, Z., Rolland, J.P., Pandya, A., Fu, Q., Liu, J., Spontak, R.J., Sheiko, S.S., Samulski, R.J., Samulski, E.T., and DeSimone, J.M., "Supramolecular Nanomimetics: Replication of Micelles, Viruses and Other Naturally-Occurring Nanoscale Objects," Small, 3, 845 (2007).
  • Frankowski, D.J., Khan, S.A., and Spontak, R.J., "Chain Scission-Induced Intercalation as a Facile Route to Polymer Nanocomposites," Adv. Mater., 19, 1286 (2007).
  • Peng, Q., Sun, X.-Y., Spagnola, J.C., Hyde, G.K., Spontak, R.J., and Parsons, G.N., "Atomic Layer Deposition on Electrospun Polymer Fibers as a Direct Route to Al2O3 Microtubes with Precise Wall Thickness Control," Nano Lett., 7, 719 (2007).
  • Sun, X.-Y., Shankar, R., Börner, H.G., Ghosh, T.K., and Spontak, R.J., "Field-Driven Biofunctionalization of Polymer Fiber Surfaces during Electrospinning," Adv. Mater., 19, 87 (2007).
  • Spontak, R.J., Shankar, R., Bowman, M.K., Krishnan, A.S., Hamersky, M.W., Samseth, J., Bockstaller, M.R., and Rasmussen, K.Ø., "Selectivity- and Size-Induced Segregation of Molecular and Nanoscale Species in Microphase-Ordered Triblock Copolymers," Nano Lett., 6, 2115 (2006).

 

 

Richard J Spontak

Professor of Chemical & Biomolecular Engineering and Materials Science & Engineering 
North Carolina State University 
Raleigh, North Carolina, USA
Phone: (919) 417-3554
E-mail: 
Spontak@ncsu.edu