Article

Journal of Inorganic and Organometallic Polymers and Materials

, Volume 22, Issue 3, pp 624-628

Micro-phase Separation via Spinodal-like Decomposition in Hexamethylynediisocyanate (HDI)-polyurea

  • Amit S. KulkarniAffiliated withSABIC Innovative Plastics
  • , Gregory BeaucageAffiliated withDepartment of Chemical and Materials Engineering, University of Cincinnati Email author 
  • , Garth L. WilkesAffiliated withDepartment of Chemical Engineering, Virginia Polytechnic Institute and State University
  • , Sudipto DasAffiliated withDepartment of Chemical Engineering, Virginia Polytechnic Institute and State University
  • , Iskander YilgorAffiliated withDepartment of Chemistry, Kóc University

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Abstract

Micro-phase separation in hexamethylynediisocyanate-polyurea was studied using small-angle X-ray scattering and infrared absorption. It was found that phase separation in this system followed spinodal-like decomposition on a 3–4 nm size scale with phase separation occuring on a time scale of days.

Keywords

Micro-phase separation Spinodal decompostion Polyurea Small-angle X-ray scattering