ד"ר דוד אלפרשטיין

ד"ר דוד אלפרשטיין

Dr. David Alperstein

ד"ר דוד אלפרשטיין
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Department
Mechanical Engineering
Research Interests
Polymer molecular modeling, Additives behavior in a polymer.
Courses
Structure and Properties of Plastic Materials Principles of Plastics Processing Failure of plastics Advanced topics in plastics Molecular modeling for polymers Fluid Mechanics Thermodynamics
Current Position
Senior lecturer, Polymer science and technology Molecular modeling and Fluid Mechanichs
Contact Information
Email
davida@braude.ac.il
Telephone
972-4-990-1944
Office
D 398
Education
D.Sc.
1993, Chemical Engineering at the Department of Chemical Engineering, Technion I.I.T Haifa, Israel. DISSERTATION: "Dielectric Cure Monitoring of Polyester Resin".
M.Sc.
1981,Chemical Engineering at the Department of Chemical Engineering, Technion I.I.T Haifa, Israel. DISSERTATION: "Particulate Reinforced Rigid Polyurethane Foams ".
B.Sc.
1979, Chemical Engineering at the Department of Chemical Engineering, Technion I.I.T, Haifa, Israel.
Research Areas
• Computational research of plasticizers efficiency for Nylon copolymer 6/66.
• Computational research of POSS migration in PP matrix. In collaboration with Prof. M. Lewin from Polytechnic Institute of New York University
• Computational research of biological adhesives made of Dextran and dendrimer. In collaboration with Dr. Artzi, MIT.
• Investigation of the interaction of medicines from polylactic acid – polyglycolic acid copolymer. In collaboration with Prof. Zilberman, Tel Aviv university.
• Investigation of the interaction of surfactants with carbon nanotubes, in collaboration with Prof. Sukenik, Bar Ilan university.
• Investigation of brittle fracture in injected PP products.
• Computational research of plasticizers for Nylon6, in collaboration with Prof. Narkis.
• Computational research of the interaction of carbon tubes with organic compounds, in collaboration with Prof. Narkis.
• Computational research of Low Shear Polymers Nano-Composites, by phase separation or gelators.
• Investigation of Peroxide Crosslinking of a Styrene - Free Unsaturated Polyester Alkyd. The research is focused on network analysis by Monte Carlo simulation technique and crosslinking mechanism using quantum mechanics codes. The research is in collaboration with Prof. M. Narkis and Prof. A. Siegmann.
• Investigation of computational ways to predict the toxicity of polymer additives by molecular modeling. The research is focused on developing quantitative equations based on thermodynamics principles, relating toxicity to thermodynamics variables.
• Investigation of characterization and prediction of gelators properties for polymers by molecular modeling. The research is being conducted in collaboration with Prof. M. Narkis.
Teaching Experience
ORT Braude College of Engineering:
  • Undergraduate Courses:Structure and Properties of Plastic Materials Principles of Plastics Processing Failure of plastics Advanced topics in plastics Computational methods in molecular modeling Molecular modeling for polymers Fluid Mechanics Thermodynamics
Shenkar College:
  • Undergraduate Courses:Principles of transport phenomena Unit operations in chemical engineeringPhysical Chemistry
Tzur University:
  • Undergraduate Courses:Structure and properties of plastic materialsSelected topics in the plastics industry
Professional Activities
1994 – present Academic and industrial Researcher in the fields of molecular modeling for polymers. The state of the art software technique for prediction and analyzing plastics properties, from basic principles. Industrial research in the field of computer aided simulations for plastics processing and in the field of prediction of impact properties of polymers.
1979 - 1981 Research assistant, Department of Chemical Engineering, Technion I.I.T, Israel.

Industrial Experience:
1994 – present Polymer science consultant for the plastics industry in the field ofmolecular modeling for polymers , and computer aided simulations for plastics processing. A list of selected projects:
• Development of anti corrosion films
• Blooming prevention of polymer additives by molecular modeling
• Mechanism of rubber crosslinking by molecular modeling” in collaboration with Raphael.
• "Crosslinking and toughening mechanisms in Epoxy resins", in collaboration with Raphael and the Israeli Plastics and Rubber Center
• "The effect of fire retardants on the impact behavior of ABS", in collaboration with the Israeli Plastics and Rubber Center and Dead Sea Bromine Compounds.
• "Oxygen and humidity permeability of multi-layer polymeric films for food packaging" in collaboration with the Israeli Plastics and Rubber Center.
• “Computer Simulation of Plastic Melt Flow in Ram Extruder”, in collaboration with Golan Plastics Products.
1985 – 1989 Scientific Programmer , Rafael Israel Armament Development Authority.
1981 - 1985 Composite Materials Engineer , Rafael, Israel ArmamentDevelopment Authority.
1979 Engineering Training, Eindhoven, Phillips Plastic Laboratory, TheNetherlands
Publications
Refereed Papers
  1. Siegmann, S. Kenig, D.Alperstein and M. Narkis, "Mechanical Behavior of Reinforced Polyurethane Foams", Polymer Composites, 4, 113, (1983).
  2. D. Alperstein, M. Narkis, A. Siegman and S. Kenig, "Effect of Particulate Reinforcement on Creep behavior of Polyurethane Foams", Polymer Composites, 5, 155, (1984).
  3. D. Alperstein, M. Narkis and A Siegmann, B. Binder "The Effect of Curing of Unsaturated Polyester Resin on the Dynamic Relaxation Time", Polymer Eng. Sci., 35, 754 (1995).
  4. D. Alperstein, M. Narkis and A Siegmann, "Modeling the Dielectric Response of Unsaturated Polyester Resin During Cure", Polymer Eng. Sci., 35, 284 (1995).
  5. D. Alperstein, A. Siegmann and M. Narkis, " The Thermochemical and Dielectric Behavior of Unsaturated Polyester Resin During Cure", J. Pol. Eng. 14, 199 (1995).
  6. D. Alperstein, M. Narkis and A Siegmann, "The Effect of Cure Cycle of Unsaturated Polyester Resin on the Temperature and Conversion Profiles", Polymer Eng. Sci., 36, 610 (1996).
  7. M. Zilberman, G.I. Titelman, A Siegmann, Y. Haba. M. Narkis, D. Alperstein, “ Conductive Blends of Thermally Dodecylbenzene Sulphonic Acid - Doped Polyaniline with Thermoplastic Polymers”, J. App. Poly. Sci., 66, 243 (1997).
  8. D. Alperstein, M. Narkis, M. Zilberman, A Siegmann, “Computer Aided Selection of a Polymer Matrix for Polyaniline Conductive Blend”, Polymers for Advanced Technologies, 9, 563 (1997).
  9. D. Alperstein, C. Dodiuk, S. Kenig, "Computer Simulation of Curing and Toughening of Epoxy Resins", Acta Polym. 49, 594 (1998).
  10. D. Alperstein, N. Artzi, A. Siegmann and M. Narkis, “Experimental and Computational Investigation of EVOH/Clay Nanocompostes”, J. App. Poly. Sci. 97, 2060 (2005).
  11. D. Alperstein, I. Harpaz, A. Siegmann and M. Narkis, “Experimental and Computational Investigation of Peroxide Crosslinking of a Styrene - Free Unsaturated Polyester Alkyd” Polymer International 59,836, 2010.
  12. D. Alperstein, N. Kornberg, D. Knani “A Study of Fire Retardant Blooming In HIPS By Molecular Modeling”, Polym. Adv. Technol., 22, 1446, 2011.
  13. D. Alperstein and M. Lewin " "Mechanism of migration of flame retardant additives and nanoparticles in polymeric matrices by experimental methods and by computational modeling", presented at the 22th Annual Conference on Recent Advances in Flame Retardancy of Polymeric Materials, May 23 -25, Stamford CN.
  14. Govzman, D Alperstein, N. Narkis, "Development and Characterization of plasticized Polyamides by fluid and solid plasticizers." Polymers for Advanced Technologies, 23, 938-945 (2012).
  15. D. Alperstein • D. Knani • A. Goichman • M. Narkis, "Determination of plasticizers efficiency for nylon by molecular modeling", Polym. Bull. 68. 1977. 2012.
  16. E. Zelikman • D. Alperstein • G. Mechrez, R. Suckeveriene • M. Narkis, " Study of interactions between single-wall carbon nanotubes and surfactant using molecular simulations", Polym. Bull. DOI 10.1007/s00289-012-0837-4 (2012).
  17. Amir Kraitzer, David Alperstein, Yoel Kloog, Meital Zilberma, " Mechanisms of antiproliferative drug release from bioresorbable porous structures", J Biomed Mater Res Part A, DOI: 10.1002/jbm.a.34436 (2012).
  18. D. Alperstein, D. Knani, " In Silico studies of 1,3(R):2,4(S)-dibenzylidene-D-sorbitol as a gelator for Polypropylene", Polymers for Advanced Technologies, Accepted for publication 7 Nov 2012.
Conference Proceedings and Abstracts
  1. D. Alperstein, M. Narkis, A. Siegmann, "Polymeric Resin Cure Monitoring: Simultaneous Dielectric and Dynamic Mechanical Measurements", presented at the 21st Annual Meeting of the Israel Polymer and Plastics Society, December 24, 1992 Hertzlia, Israel.
  2. D. Alperstein, A. Siegmann, M. Narkis, "Dielectric and Dynamic Cure Monitoring of Polyester Resin : Molecular Interpretation", presented at the 6th Israel Material Engineering Conference, February 23 - 25 1993, the Dead Sea Israel.
  3. D. Alperstein, "Polymers Molecular Modeling", presented at the 23rd Annual Meeting of the Israeli Polymer and Plastics Society, December 14, 1994, Hertzlia, Israel.
  4. D. Alperstein, H. Dodiuk, S. Kenig "Computer Simulation of Curing and Toughening of Epoxy Systems", presented at the Fourth International Conference on Composites Engineering, ICCE/4, July 6-12 1997 in Big Island of Hawaii, USA.
  5. D. Alperstein, M. Zilberman, A. Siegmann, M. Narkis, “Computer Aided Polymer Selection for Compatible Blends”, presented at the 26th Annual Meeting of the Israeli Polymer and Plastics Society, December 25, 1997, Hertzlia, Israel.
  6. D. Alperstein, N. Kornberg, “Brominated Flame-Retardant Blooming Prevention by Molecular Modeling”, presented at the 9th Israel Material Engineering Conference, December 6 – 7, 1999, Technion I.I.T. Haifa, Israel.
  7. D. Alperstein, “’Corrosion in Polymers’, presented at the Corrosion Conference, February 28, 2001, ORT Braude College, Carmiel, Israel.
  8. D. Alperstein, "Molecular Modeling for Polymers", presented at the "New aspects in polymers – simulation and measurement" symposium of the Israel Plastics Society, May 24, 2001, Ramat – Gan Israel.
  9. D. Alperstein, S. Kenig “Aging Prediction of High Performance Rubber by Molecular Simulation”, presented at 6th International Symposium on Polymers for Advanced Technologies, PAT, September 2 – 6, 2001, Eilat, Israel.
  10. D. Alperstein, "Molecular Modeling in Material Science, Principles, Methods and Applications", presented at the Biotechnology faculty, Technion I.I.T, April 24, 2002, Haifa, Israel.
  11. D. Alperstein, N Artzi, M. Narkis, A. Siegmann "Molecular Modeling of polymer silicate nano clay intercalation", presented at the 32nd Annual Meeting of the Israeli Polymer and Plastics Society, January 12, 2004, Tel - Aviv, Israel.
  12. Mironi-Harpaz, D Alperstein, M Narkis and A Siegmann "Curing of Styrene-Free Unsaturated Polyester Alkyd: Synthesis, Characterization and Simulation", presented at the meeting of the ACS, Division of Polymeric Materials: Science and Engineering, September 10 – 14 2006 San Francisco, California.
  13. D Knani, D Alperstein " In Silico studies of 1,3:2,4-dibenzylidene-D-sorbitol as a gelator for Polypropylene", presented at the 6th European Conference on Computational Chemistry, September 3 – 7, 2006 Tale, Slovakia.
  14. D. Alperstein, N Artzi, M. Narkis, A. Siegmann Computational Investigation of EVOH/Clay Nanocomposites. International Soft Matter Conference, October 1 – 4, 2007 Aachen, Germany.
  15. D Knani, D Alperstein " In Silico studies of DBS as a gelator for Polypropylene", presented at the 1st European Conference on Multi scale modeling , October 7 – 9, 2007 Brno, Czech Republic.
  16. D. Alperstein, N Artzi, M. Narkis, A. Siegmann Computational Study of EVOH/Clay Intercalation. presented at the 1st European Conference on Multi scale modeling , October 7 – 9, 2007 Brno, Czech Republic.
  17. D. Alperstein, D. Knani, "Multiscale modeling for polymer science, the state of the art", presented at the 37th Annual Meeting of the Israeli Polymer and Plastics Society, December 15, 2008, Tel - Aviv, Israel.
  18. D. Alperstein, N. Kornberg, D. Knani “A Study of Fire Retardant Blooming In HIPS By Molecular Modeling”, PAT 2009, October 11- 14, 2009, Jerusalem, Israel.
  19. D. Alperstein and M. Lewin " "Mechanism of migration of flame retardant additives and nanoparticles in polymeric matrices by experimental methods and by computational modeling", presented at the 22th Annual Conference on Recent
  20. Advances in Flame Retardancy of Polymeric Materials, May 23 -25, Stamford CN.
  21. D. Alperstein and D. Knani, "Determination of Plasticizer efficiency for Nylon by molecular modeling", 41th Annual Meeting of the Israeli Polymer and Plastics Society, December 11, 2012, Tel - Aviv, Israel.
Other Publications
Confidential Industrial Research Reports
  1. D. Alperstein, "Multi Directional Laminates: Composites Dimensional Stability", Research Report No. 84/63/031,Rafael, Israel Armament Development Authority, March (1984).
  2. D. Alperstein, "Computation Of Hygrothermal Coefficients of Expansion of Symmetrical Laminated Composites" , Research Report No. 84/63/032, Rafael, Israel Armament Development Authority , May (1984).
  3. D. Alperstein, "Simulation of polymer melt flow in a Ram Extruder" Golan Plastics (1995).
  4. D. Alperstein, "The effect of fire retardants on the impact behavior of ABS' Dead Sea Bromine (1996). 
  5. D. Alperstein, S. Kenig "Crosslinking and toughening mechanisms in Epoxy resins" Rafael, Israel Armament Development Authority, (1997).
  6. D. Alperstein, S. Kenig "Oxygen and humidity permeability of multi-layer polymeric films for food packaging" Israeli Plastics and Rubber Center (1998).
  7. D. Alperstein, "Simulation of air composition in vegetables and fruits in polymeric film packages" Stepac (2000).
  8. D. Alperstein, “Mechanism of rubber crosslinking by molecular modeling” Rafael, Israel Armament Development Authority, (2002).
  9. D. Alperstein "Investigation of Blooming prevention of polymer additives by molecular modeling", Dead Sea Bromine (2003).
  10. D. Alperstein, D. Knani "Gelators miscibility in Polypropylene matrix by molecular modeling", Carmel Olefins (2005).
  11. D. Alperstein, D. Knani "Toxicity assessment of fire retardants in polymers" Dead Sea Bromine (2006).
  12. D. Alperstein "Corrosion inhibitors miscibility in LDPE", Grofit Plastics (2007).