Abstract
Polyurethane (PU) foams and sheets were prepared from molasses (MOL) solutions in polyethylene glycol having molecular weights of 200 and 400 (PEG 200 and 400) and diphenylmethane diisocyanate (MDI). For the preparation of foams, small amounts of di-n-butyltin dilaurate (catalyst), silicone oil (surfactant) and water (foaming reagent) were added to the above reaction system. The thermal decomposition temperatures, which were determined by thermogravimetry (TG), decreased slightly with increasing MOL content of PU's. The glass transition temperatures, which were obtained by differential scanning calorimetry (DSC), increased with the increase in MOL content of PU's suggesting that MOL exists at crosslinking points and reduces main chain motion of PU's. The increase in modulus and strength of foams and sheets was observed in compression and tensile tests when MOL contents in PU foams and sheets were increased.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
