Iskender Yilgor - Istanbul, TR Emel Yilgor - Istanbul, TR Derek Klinedinst - Blacksburg VA, US Garth Wilkes - Blacksburg VA, US
International Classification:
C08G 18/48
US Classification:
528076000
Abstract:
Novel segmented polyurethaneurea copolymers were synthesized using a poly(ethylene-butylene)glycol based soft segment. Dynamic mechanical analysis (DMA), small angle X-ray scattering (SAXS) and atomic force microscopy (AFM) established the presence of a microphase-separated structure in which hard microdomains are dispersed throughout a soft segment matrix. Wide angle X-ray scattering (WAXS) and differential scanning calorimetry (DSC) results suggest the materials are amorphous. Samples that are made with HMDI/DY and have hard segment contents in the range of 16-23 wt % surprisingly exhibit near-linear mechanical deformation behavior in excess of 600% elongation. They also show very high levels of recoverability even though their hysteresis is also considerable. The materials are both melt processable and solution processable.
Thermoplastic Copolymers Through Stoichiometric Reactions Between Diisocyanates And Oligomeric Diols And Diamines
Iskender Yilgor - Istanbul, TR Emel Yilgor - Istanbul, TR Garth Wilkes - Blacksburg VA, US Jignesh Sheth - Wilsonville OR, US Derek Klinedinst - Blacksburg VA, US
International Classification:
C08G018/00
US Classification:
528044000
Abstract:
A segmented copolymer can be produced without needing a chain extender. The conventional view that a chain extender was needed to construct a segmnented copolymer has been disproven. For example, by certain reactions of a diisocyanate with oligomeric and polymeric diols or diamines, segmented copolymers can be produced without needing a chain extender. Segmented copolymers not containing ethylene glycol, 1,4-butanediol and ethylene diamine can be produced.
BondCote Corporation - Pulaski, VA since Nov 2012
Research/Chemical Engineer
VTLS - Blacksburg, VA Oct 2010 - May 2012
Public Relations Officer (Contract)
Virginia Tech - Blacksburg, VA 2004 - Dec 2011
Graduate Research Assistant (Dr. Garth Wilkes)
Electrical Distribution Design - Blacksburg, VA May 2011 - Oct 2011
Marketing Analyst (Contract)
American Chemical Society Short Course Program - Virginia Tech - Blacksburg, VA Jan 2004 - Dec 2006
Graduate Instructor
Education:
Virginia Tech 2004 - 2011
PhD, Materials Science & Engineering
Virginia Tech 2010 - 2011
MEng, Materials Science & Engineering
Norfolk State University 1996 - 1998
MS, Materials Science
Loyola College in Maryland 1992 - 1996
BS, Engineering Science
Skills:
Polymer Science Polymer Chemistry Materials Science Design of Experiments Polyurethanes Polyureas Structure Property Determination Materials Characterization Atomic Force Microscopy Polarized Optical Microscopy Scanning Electron Microscopy Dynamic Mechanical Analysis Wide Angle X Ray Scattering Small Angle X Ray Scattering Small Angle Light Scattering Differential Scanning Calorimetry Tensile Testing Birefringence Circular Dichroism Afm Polymer Characterization Ftir Optical Microscopy Tga Rheology Chemistry Characterization Polyurethane Mechanical Analysis Saxs Polymers Product Development Manufacturing R&D Research and Development Coatings Materials Plastics Cost Savings Project Management Network Administration Management Talent Management Color Matching Product Testing Statistical Analysis Statistical Data Analysis Research Rheometry
Interests:
Arts and Culture
Certifications:
Transitioning From Technical Professional To Manager
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