From Aminolysis Product of PET Waste to Novel Biodegradable Polyurethanes |
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Authors: | Gity Mir Mohamad Sadeghi Ramin Shamsi Mahsa Sayaf |
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Institution: | (1) Polymer Engineering and Color Technology Department, Amirkabir University of Technology, Tehran, Iran |
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Abstract: | Chemical recycling of PET has been developed by various methods. Aminolysis is one of chemical recycling methods of PET has
been developed recently. The obtained product using aminolysis, Bis (2-hydroxy ethylene) terephthalamide (BHETA), has the
potential for further reactions to obtain useful products. There are few reports on usage of recycled BHETA from PET waste
to synthesis of polyurethanes. On the other hand, various biodegradable polyurethanes have been synthesized using polycaprolactone
diol. Therefore, caprolactone is a new potential in synthesis of biodegradable polyurethanes from PET waste. In this work,
novel biodegradable polyurethanes have been synthesized using BHETA. In this order, at first polyols with different molecular
weights have been synthesized through ring opening polymerization of caprolactone by BHETA, then urethane linkages were formed
using HDI (Hexamethylene Diisocyanate) without chain extender. Chemical, thermal, mechanical and dynamic mechanical properties,
biodegradability, morphology and UV resistance of synthesized polyurethanes have been investigated. |
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