James Lewicki

Portrait of  James Lewicki

  • Title
    Deputy Group Leader, Nanoscale, Surface, and Interface Science Group
  • Email
  • Phone
    (925) 423-1115
  • Organization
    Not Available

Research Interests

Polymer aging, lifetime assessment and predictive modeling, Polymer physics, structure, and characterization. Mechanics of Materials, their response, dynamics, and failure. Advanced, Additive Manufacture process and feedstock development. Polymer composites & carbon fiber materials

Current position(s):

Director, Quantitative Polymer Aging and Degradation Laboratory; Major Technical Effort Lead, Aging and Lifetimes Program, WTE; Polymer Aging and Assessments Lead, W80-4 Program; Deputy Group Leader, Nanoscale Surface, and Interface Science

Career path:

Post-Doctoral Researcher, Non-Nuclear Materials, Enhanced Surveillance Campaign, WTE; Principal investigator Non-Nuclear Materials, Enhanced Surveillance Campaign, WTE.


• Carbon Fiber and advanced Composite, Additive manufacturing.
• Predictive, lifetime assessments for elastomeric composite materials
• Modeling and predication of radiation damage in polymer materials

Subject Matter Expertise:

• Polymer degradation, aging & lifetime prediction
• Mechanics and dynamic response of polymeric materials
• Polymer composites
• Advanced functional, macromolecular networks

Ph.D., Physical Chemistry, University Strathclyde, Glasgow, 2007

Msci, Pure Chemistry, University of Strathclyde, Glasgow, 2004

Selected publications

  1. M. P. Kroonblawd, N. Goldman, A. Maiti & James P. Lewicki “Polymer degradation through chemical change: A quantum-based test of inferred reactions in irradiated polydimethylsiloxane” Physical Chemistry, Chemical Physics (2022)
  2. F. Fernandez, J. P. Lewicki, D. A. Tortorelli. “Optimal toolpath design of additive manufactured composite cylindrical structures” Computer Methods in Applied Mechanics and Engineering (2021)
  3. M. Kroonblawd, N. Goldman, A. Maiti, & J.P. lewicki “A Quantum-Based Approach to Predict Primary Radiation Damage in Polymeric Networks” Journal of Chemical Theory and Computation (2020)
  4. Maiti, A., Small, W., Lewicki, J.P. et al. “Age-aware constitutive materials model for a 3D printed polymeric foam” Nature Scientific Reports (2019).
  5. M.P. Kroonblawd, N. Goldman & J. P. Lewicki. “Anisotropic Hydrolysis Susceptibility in Deformed Polydimethylsiloxanes” Journal of Physical Chemistry B. (2019) – Cover issue
  6. M.P. Kroonblawd, N. Goldman & J. P. Lewicki. “Chemical Degradation Pathways in Siloxane Polymers Following Phenyl Excitations” Journal of Physical Chemistry B. (2018)
  7. C. A. Fox, H.A.N. Abdulla, D. Burdige, J.P. Lewicki & T. Komada “Composition of Dissolved Organic Matter in Pore Waters of Anoxic Marine Sediments Analyzed by 1H Nuclear Magnetic Resonance Spectroscopy” Frontiers in Marine Science (2018).
  8. J.N. Rodriguez, C.T. Alviso, C.A. Fox & J. P. Lewicki “NMR Methodologies for the Detection and Quantification of Nanostructural Defects in Silicone Networks” Macromolecules (2018).
  9. S. Chandrasekaran, M.A Worsley, E.B. Duoss, & J.P. Lewicki “3D printing of high-performance cyanate ester thermoset polymers” Journal of Materials Chemistry A (2017)
  10. J.P. Lewicki, J. N Rodriguez, C. Zhu & M. J. King “3D-Printing of Meso-structurally Ordered Carbon Fiber/Polymer Composites with Unprecedented Orthotropic Physical Properties” Scientific Reports (2017)
  11. J. N Rodriguez, C. Zhu, E.B. Duoss & J. P. Lewicki “Shape-morphing composites with designed micro-architectures” Scientific Reports (2016)
  12. J. Goff, S. Suliman, J.P. Lewicki, B. Arkles “Soft Materials with Recoverable Shape Factors from Extreme Distortion States" Advanced Materials (Materials Views feature article) 28; 12 (2015) 2393-2398. DOI:10.1002/adma.201503320
  13. J. P. Lewicki · C.A. Fox · M. A. Worsley “On the Synthesis and Structure of Resorcinol-Formaldehyde Polymeric Networks – Precursors to 3D-Carbon Macroassemblies” Polymer 07/2015; 69. DOI:10.1016/j.polymer.2015.05.016 
  14. J.P. Lewicki ”Seeking an Understanding with Silicones” Silicon 12/2014; DOI:10.1007/s12633-014-9253-8
  15. J P. Lewicki and R. S. Maxwell. “Applications of Modern Pyrolysis Gas Chromatography for the Study of Degradation and Aging in Complex Silicone Elastomers” Advances in Gas Chromatography (2014), Xinghua Guo (Ed.), ISBN: 978-953-51-1227-3, InTech http://dx.doi.org 10.5772/57509
  16. J. P. Lewicki and R. S. Maxwell “Degradative Thermal Analysis of Engineering Silicones” Eds. A. Tiwari and M. D. Soucek Concise Encyclopedia of High Performance Silicones (2014) 434-496. Co-published by John Wiley & Sons Inc. and Schriever Publishing http://dx.doi.org/10.1002/9781118938478.ch13
  17. J. P. Lewicki, P. W. Beavis, M. W. C. Robinson and R. S. Maxwell “A dielectric relaxometry study of segmental dynamics in PDMS/boron composite and hybrid elastomers” Polymer 55; 7 (2014) 1763-1768. http://www.sciencedirect.com/science/article/pii/S0032386114001402
  18. J. P. Lewicki, K. Pielichowski, M. Jancia, E. Hebda, R. L. F. Albo and R. S. Maxwell “Degradative and morphological characterization of POSS modified nanohybrid polyurethane elastomers” Polymer Degradation and Stability  (2014) 104, 50-56. http://dx.doi.org/10.1016/j.polymdegradstab.2014.03.025
  19. J. P. Lewicki, M. A. Worsley, R. L. F. Albo, J. A. Finnie, M. Ashmore, H. E. Mason, T. F. Baumann and R. S. Maxwell  “The effects of highly structured low density carbon nanotube networks on the thermal degradation behaviour of polysiloxanes” Polymer Degradation and Stability (2014) 102, 25-32 http://dx.doi.org/10.1016/j.polymdegradstab.2014.02.013
  20. Lewicki, JP, Albo RLF, Alviso, CT and Maxwell, RS. “Pyrolysis-gas chromatography/mass spectrometry for the forensic fingerprinting of silicone
  21. engineering elastomers” Journal of Analytical and Applied Pyrolysis 2013, 99, 85–91
  22. Lewicki JP, Mayer, BP, Alviso CT, and Maxwell, RS. “Thermal Degradation Behavior and Product Speciation in Model Poly(dimethlysiloxane) Networks” Journal of Inorganic and Organometallic Polymers and Materials 2012, 22, 636-645.
  23. Lewicki JP, Pielichowski K, Tremblot P, Janowski B, Todd D and Liggat JJ. “Thermal Degradation Studies of Polyurethane/POSS Nanohybrid Elastomers” Polymer Degradation and Stability 2010, 95, 1099-1105.
  24. Lewicki JP, Liggat JJ and Patel M. “The Thermal Degradation Behaviour of Polydimethylsiloxane/Montmorillonite Nanocomposites” Polymer Degradation and Stability 2009, 94, 1548-1557.
  25. Lewicki JP, Maxwell RS, Patel M, Herberg J, Liggat JJ, and Pethrick RA. “Effects of meta-carborane on segmental dynamics in a bimodal PDMS network” Macromolecules 2008, 41, 9179-9186.
  26. Lewicki JP, Liggat JJ, Daly JH and Pethrick RA. “Polymeric Nanocomposites – Investigating the Thermal Stability of Novel Montmorillonite / PDMS and Polyurethane Composites” Modern Polymeric Materials for Environmental Applications Vol. 3, ed. Krzysztof Pielichowski, Crakow University of Technology, 2008.
  27. Lewicki JP, Patel M, Morrell P, Liggat JJ, Murphy J and Pethrick RA. “The Stability of Polysiloxanes Incorporating Nano-scale Physical Property Modifiers” Science and Technology of Advanced Materials, 2008, 9, 1-8. (Cover)
  28. Lewicki JP, Liggat JJ, Patel M, Pethrick RA, Rhoney IR. “Investigating the Ageing Behaviour of Polysiloxane Nanocomposties by Degradative Thermal Analysis” Polymer Degradation and Stability 2007, 93, 158-162.
  29. For a full list, see: Google Scholar | ResearchGate | Scopus | ORCID


  1. J. P. Lewicki, Worsley M.A “Hybrid polymer networks as ultra-low ‘k’ dielectric layers” US9260571


  1. J.P Lewicki, M.A Worsley “Silicone elastomers capable of large isotropic dimensional change” US10138330


  1. J.P Lewicki, M.A Worsley “polymer/carbon composites which exhibit a large and tunable temperature dependent electrical switching response” US10276286


  1. J.P. Lewicki “High performance, rapid thermal/UV curing resin for additive manufacturing of short and continuous carbon fibre composites” US9944016


  1. J.P Lewicki, E.B Duoss, J.N Rodriguez, M.A. Worsley, M. King “Additive manufacturing of short and mixed fibre-reinforced polymer” 2017/0015061 A1. Jan 2017


  1. J.P Lewicki, E.B Duoss, W. Elmer, M. King J.N Rodriguez, M.A. Worsley “Additive manufacturing of continuous filament carbon fibre epoxy composites” 2017/0015060 A1. Jan 2017


  1. J.P. Lewicki “High performance, rapid thermal/UV curing resin for additive manufacturing of short and continuous carbon fibre composites” US10994472B2


  1. J.P Lewicki, M.A Worsley “polymer/carbon composites for temperature dependent switching applications” US1076286B2


  1. J. P. Lewicki “Chemical Processes and Compositions for Mechanically Stabilizing Cellulose-Lignin Based Artifacts” WO/2019/099410
  • US DOE Secretary’s Achievement Award, 2019
  • LLNL Defense Programs, Award of Excellence, 2014
  • Physical and Life Sciences Directorate Award, 2015


Editorial Board – Silicon

Editorial Board – Polymer Degradation and Stability

Permanent Committee Member – Polymer Degradation Discussion Group