Lun Howe Mark, PhD

 

 

Ph.D. (Mechanical & Industrial Engineering), University of Toronto ‘2024
M.A.Sc. (Aerospace Engineering), Ryerson University ‘2010
B.A.Sc. (Mechanical Engineering) & B.Sc. (Computing Technology), University of Ottawa ‘2008
Email: lhmark@mie.utoronto.ca

 

Research focuses:

  • Utilizing gas-assisted technology for thermoplastic polyurethane (TPU) foam injection mold and blow foam molding
  • Injection molding, machining, and visualization processes.

 

 

Journal Papers

  • Wang, G., Wang, L., Mark, L.H., Shaayegan, V., Wang, G., Li, H., Zhao, G., and Park, C.B., “Ultralow-Threshold and Lightweight Biodegradable Porous PLA/MWCNT with Segregated Conductive Networks for High-Performance Thermal Insulation and Electromagnetic Interference Shielding Applications”, ACS Applied Materials and Interfaces, Vol. 10, Issue 1, pp. 1195-1203, 2018.  DOI: 10.1021/acsami.7b14111
  • (Invited) Mark, L.H., Chu, R.K.M., Wang, G., and Park, C.B., “High-Pressure Preform Foam Blow Molding“, International Polymer Processing, Vol. 32, pp. 637-647, 2017. DOI: 10.3139/217.3537.
  • Tabatabaei, A., Barzegari, M.R., Mark, L.H., and Park, C.B., “Visualization of Polypropylene’s Strain-Induced Crystallization under the Influence of Supercritical CO2 in Extrusion“, Polymer (United Kingdom), Vol. 122, pp. 312-322, 2017. DOI: 10.1016/j.polymer.2017.06.052.
  • Wang, G., Zhao, J., Mark, L.H., Wang, G., Yu, K., Wang, C., Park, C.B., and Zhao, G., “Ultra-Tough and Super Thermal-Insulation Nanocellular PMMA/TPU“, Chemical Engineering Journal, Vol. 325, pp. 632-646, 2017. DOI: 10.1016/j.cej.2017.05.116.
  • Wang, G., Zhao, J., Yu, K., Mark, L.H., Wang, G., Gong, P., Park, C.B., and Zhao, G., “Role of Elastic Strain Energy in Cell Nucleation of Polymer Foaming and Its Application for Fabricating Sub-Microcellular TPU Microfilms“, Polymer (United Kingdom), Vol. 119, pp. 28-39, 2017. DOI: 10.1016/j.polymer.2017.05.016.
  • V. Shaayegan, G. Wang, L.H. Mark, andChul B. Park, “Identification of Cell-Nucleation Mechanism in Foam Injection Molding with Gas-counter Pressure via Mold Visualization”, AIChE Journal, Vol. 62, No. 11, 4035-4046 (2016). DOI: 10.1002/aic.15433
  • Chu, R.K.M., Mark, L.H., Jahani, D., and Park, C.B., “Estimation of the Foaming Temperature of Mold-opening Foam Injection Molding Process“, Journal of Cellular Plastics, Vol. 52, Issue 6, pp. 619-641, 2016. DOI: 10.1177/0021955X15592069.
  • Tabatabaei, A., Mark, L.H., and Park, C.B., “Visualization of Polypropylene Crystallites Formed from a Stressed Melt in Extrusion“, Polymer (United Kingdom), Vol. 101, pp. 48-58, 2016. DOI: 10.1016/j.polymer.2016.08.036
  • Ding, W., Chu, R.K.M., Mark, L.H., Sain, M. and Park, C.B., “Non-Isothermal Crystallization Behaviors of Poly(Lactic Acid)/Cellulose Nanofiber Composites in the Presence of CO2“, European Polymer Journal, Vol. 71, pp. 231-247, 2015. DOI: 10.1016/j.eurpolymj.2015.07.054.
  • Zhao, N., Mark, L.H., Zhu, C., Park, C.B., Li, Q. Glenn, R. and Thompson, T.R. “Foaming Poly(vinyl alcohol)/Microfibrillated Cellulose Composites with CO2 and Water as Co-Blowing Agents“, Industrial and Engineering Chemistry Research, Vol. 53, No. 30, pp. 11962-11972, 2014. DOI: 10.1021/ie502018v.
  • Wong, A., Mark, L.H., Hasan, M.M., and Park, C.B. “The Synergy of Supercritical CO2 and Supercritical N2 in Foaming of Polystyrene for Cell Nucleation“, The Journal of Supercritical Fluids, Vol. 90, pp. 35-43, 2014. DOI: 2014.10.1016/j.supflu.2014.03.001.

 

Conference Papers

  • Tabatabaei, A., Mark, L.H., Xie, Q., and Park, C.B., “Dynamic Solubility of Carbon Dioxide in Polypropylene Melt”, Society of Plastics Engineers, Annual Technical Conference – ANTEC, Conference Proceedings, Paper #443, Indianapolis, Indiana, May 23-25, 2016.
  • Mark, L.H., Chu, R.K.M., Wang, G., and Park, C.B., “Microcellular Foam Injection Molding of Thick Parts”, Society of Plastics Engineers, Annual Technical Conference – ANTEC, Conference Proceedings, Paper #308, Indianapolis, Indiana, May 23-25, 2016.
  • Chu, R.K.M., Mark, L.H., and Park, C.B., “Foam Injection Molding of Polylactide with In-Situ Fibrillated Polytetrafluoroethylene”, Society of Plastics Engineers, Annual Technical Conference – ANTEC, Conference Proceedings, Paper #311, Indianapolis, Indiana, May 23-25, 2016.
  • Wang, G.L., Mark, L.H., Shaayegan, V., and Park, C.B., “Foaming Behavior and Control of Polypropylene/Nitrogen System in Microcellular Foam Injection Molding”, Society of Plastics Engineers, Annual Technical Conference – ANTEC, Conference Proceedings, Paper # 2134321, Orlando, Florida, March 23-25, 2015.
  • Mark, L.H., Wang, G., Jung, P., and Park, C.B., “TPU Foam Injection Molding with Gas-Assisted Processing”, Society of Plastics Engineers, Annual Technical Conference – ANTEC, Conference Proceedings, Paper # 2138090, Orlando, Florida, March 23-25, 2015.
  • Chu, R.K.M., Mark, L.H., and Park, C.B., “Crystallization and Foaming Behavior of Polypropylene with a Crystal-Nucleating Agent in Injection Molding”, Society of Plastics Engineers, Annual Technical Conference – ANTEC, Conference Proceedings, Paper # 2139200, Orlando, Florida, March 23-25, 2015.
  • Chang, E., Ameli, A., Mark, L.H., and Park, C.B., “Uniaxial Strain Effects on the Percolation Threshold of Fibers in Polymer Composites: A Monte Carlo Simulation”, Society of Plastics Engineers, Annual Technical Conference – ANTEC, Conference Proceedings, Paper # 2139273, Orlando, Florida, March 23-25, 2015.
  • Zhao, N., Mark, L.H., Zhu, C., Park, C.B., Li, Q., Glenn, R., and Thompson, R., “Polyvinyl Alcohol Foaming with CO2 and Water as Co-blowing Agents”, Society of Plastics Engineers, Annual Technical Conference – ANTEC, Conference Proceedings, Paper # 1884978, Las Vegas, Nevada, April 28-30, 2014.
  • Mark, L.H., Chu, R.K.M., Ameli, A., Jahani, D., Jung, P., and Park, C.B., “Gas-Assist Injection Molding of PLA for Foaming Applications”, Society of Plastics Engineers, Annual Technical Conference – ANTEC, Conference Proceedings, Paper # 1886669, Las Vegas, Nevada, April 28-30, 2014.
  • Jahani D., Ameli A., Mark L.H., Hossieny N., Park C.B., and Naguib H., “A Study on the Acoustic Behavior of Micro Perforated Panels: Experiment And Modeling”, Society of Plastics Engineers, Annual Technical Conference – ANTEC, Conference Proceedings, Paper # 1886656, Las Vegas, Nevada, April 28-30, 2014.
  • Chu, R.K.M., Mark, L.H., Jahani, D., and Park, C.B., “Injection Molding of Highly-Porous Polypropylene Foams”, Society of Plastics Engineers, Annual Technical Conference – ANTEC, Conference Proceedings, Paper # 1886472, Las Vegas, Nevada, April 28-30, 2014.
  • Mark, L.H., Xu, M. and Park, C.B., “Melt Fracture Behavior of PLA Foamed Using Different Die Entry Angles”, Society of Plastics Engineers, Annual Technical Conference, Technical Papers, Paper # PENG-12-60279, Orlando, Florida, April 1-4, 2012.
  • Mark, L.H., Xu, M., Keshtkar, M. and Park, C.B., “The Effect of CO2 on the Melt Fracture Behavior of Foamed PLA”, Society of Plastics Engineers, Annual Technical Conference, Technical Papers, Paper # PENG-12-60269, Orlando, Florida, April 1-4, 2012.
  • Wong, A., Mark, L.H., Hasan, M., and Park, C.B., “In Situ Observation of Polystyrene Foaming Processes with Carbon Dioxide-Nitrogen Gas Blends”, Society of Plastics Engineers, Annual Technical Conference, Technical Papers, Paper # PENG-11-2010-0489, Boston, Massachusetts, May 1-4, 2011.

 

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