Synthesis and Characterization of Novel Polyurethanes Based on Vegetable Oils Amide and Ester Polyols

  • Vladimir YAKUSHIN Latvian State Institute of Wood Chemistry
  • Uldis STIRNA Latvian State Institute of Wood Chemistry
  • Oskars BIKOVENS Latvian State Institute of Wood Chemistry
  • Maria MISANE Latvian State Institute of Wood Chemistry
  • Irina SEVASTYANOVA Latvian State Institute of Wood Chemistry
  • Dzintra VILSONE Latvian State Institute of Wood Chemistry
Keywords: poly(urethane amide), polyester urethane, vegetable oils, properties

Abstract

Amide and ester type polyols were synthesized from rapeseed, sunflower and castor oils, and two types of ethanolamine (diethanolamine and triethanolamine) at different molar ratio. Poly(urethane amides) and polyester urethanes based on the synthesized polyols were prepared. The effect of the chemical structure of the obtained polyurethanes on density, glass transition temperature, thermal stability and mechanical properties was investigated. The influence of the content of OH groups in the synthesized polyols on the specified characteristics was estimated. It has been found that poly(urethane amides) have better mechanical characteristics, but their thermal stability is lower than that of polyester urethanes. The chemical structure of the synthesized polyols and polyurethanes is qualitatively confirmed by IR-spectroscopy data.

DOI: http://dx.doi.org/10.5755/j01.ms.20.3.4532

Author Biographies

Vladimir YAKUSHIN, Latvian State Institute of Wood Chemistry
Polymer Laboratory, Leading Researcher
Uldis STIRNA, Latvian State Institute of Wood Chemistry
Polymer Laboratory, Leading Researcher
Oskars BIKOVENS, Latvian State Institute of Wood Chemistry
Laboratory of Lignin Chemistry, Researcher
Maria MISANE, Latvian State Institute of Wood Chemistry
Polymer Laboratory, Assistant
Irina SEVASTYANOVA, Latvian State Institute of Wood Chemistry
Polymer Laboratory, Assistant
Dzintra VILSONE, Latvian State Institute of Wood Chemistry
Polymer Laboratory, Researcher
Published
2014-09-17
Section
POLYMERS AND COMPOSITES, WOOD