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Synthesis, Structure and Properties of Poly(ester-Urethane-Urea)s Synthesized Using Biobased Diamine

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Modern polymer science and technology is focused on the development of partial or fully green polymers. This focus is related to green chemistry trends, which propose using natural and renewable resources as monomers in the synthesis of polymers. In this study, biobased diamine was used as a chain extender of ester-urethane prepolymer. Obtained poly(ester-urethane-urea) contains 16 wt% of biobased diamine. There is mention of an amine curing agent that is an amine derivative of dimerized fatty acids (obtained from vegetable oils). Application of two chain extenders, i.e., 1,4-butanediol and biobased diamine (applied separately or in mixture), with different molecular weights and chemical structures, resulted in obtaining materials with diversified properties. The chemical structure (by FTIR method), mechanical properties (tensile properties, hardness and elasticity), and thermomechanical properties (by DMTA method) were determined for the synthesized poly(ester-urethane-urea)s.
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Keywords: BIOBASED DIAMINE; CHEMICAL STRUCTURE; DYNAMIC MECHANICAL PROPERTIES; MECHANICAL PROPERTIES; POLY(ESTER-URETHANE-UREA)

Document Type: Research Article

Publication date: 13 February 2016

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