|
|
|
|
synthesis of poly(urethane-urea)s based on novel macrodiamines: enhanced mechanical properties
|
|
|
|
|
|
|
|
نویسنده
|
atabaki fariborz ,razaghpoor saeed ,jahangiri shahrzad
|
|
منبع
|
شيمي كاربردي روز - 2020 - دوره : 14 - شماره : 53 - صفحه:11 -20
|
|
چکیده
|
Polyurethane elastomers are an important polymer in many applications which attach many interest. in this research, novel macrodiamines were synthesized successfully and used as chain extenders for the improvement of mechanical properties and thermal stability of poly(urethaneurea)s (puus). structural characteristics of synthesized macrodiamines investigated by ftir. 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
|
|
کلیدواژه
|
polyurethane elastomer ,macro-diamine ,chain extender ,poly(urethane-urea)s (puus).
|
|
آدرس
|
malek-ashtar university of technology, college of science, department of chemistry, iran, malek-ashtar university of technology, college of science, department of chemistry, iran, malek-ashtar university of technology, college of science, department of chemistry, iran
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Synthesis of poly(urethaneurea)s based on novel macrodiamines:enhanced mechanical properties
|
|
|
|
|
Authors
|
Atabaki Fariborz ,Razaghpoor Saeed
|
|
Abstract
|
Polyurethane elastomers are an important polymer in many applications which attach many interest. In this research, novel macrodiamines were synthesized successfully and used as chain extenders for the improvement of mechanical properties and thermal stability of poly(urethaneurea)s (PUUs). Structural characteristics of synthesized macrodiamines investigated by FTIR. 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
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|