Synthesis of poly(urethane-urea)s based on novel macro-diamines: enhanced mechanical properties

Document Type : Original Article

Authors

1 ِDepartment of Chemistry, Malek ashtar University of Technology.Shahinshahr

2 Department of Chemistry, College of Science, Malek-ashtar University of Technology, Shahin-shahr

Abstract

Polyurethane elastomers are an important polymer in many applications which attach many interest. In this research, novel macro-diamines were synthesized successfully and used as chain extenders for the improvement of mechanical properties and thermal stability of poly(urethane-urea)s (PUUs). Structural characteristics of synthesized macro-diamines investigated by FT-IR. Also, thermal stability of prepared copolymers studied by DSC, TGA and DTG. As well, mechanical characteristics all of the PUUs investigated. Thermal melting (Tm) of copolymers hard segment appears in DSC curves. Furthermore, DSC curves don’t show any peak in measured area; It’s mean glass transition temperature (Tg) is less than (-80) °C. TGA curves displays that synthesized PUUs improvement thermal stability of polyurethane system. Mechanical test results show that mechanical properties of synthesized copolymers are improved

Keywords

References

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Applied Chemistry Today
Volume 14, Issue 53
December 2019
Pages 11-20

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