Lun Howe Mark

 

 

Ph.D. Candidate, Mechanical & Industrial Engineering, University of Toronto
M.A.Sc. (Aerospace Engineering), Ryerson University ’10
B.A.Sc. (Mechanical Engineering) & B.Sc. (Computing Technology), University of Ottawa ’08

Office location: RS104
Email: lhmark@mie.utoronto.ca

 

Lun Howe Mark is a Ph.D. candidate in Microcellular Plastics Manufacturing Laboratory in the Department of Mechanical & Industrial Engineering at University of Toronto.  He completed his B.A.Sc. in Mechanical Engineering and B.Sc. in Computing Technology at the University of Ottawa in 2008, and his M.A.Sc. in Aerospace Engineering at Ryerson University in 2010. His research focus is on utilizing gas-assisted technology for thermoplastic polyurethane (TPU) foam injection mold and blow foam molding. Other topics of interest include 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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