Mechanical Behavior of Castor-Oil-Based Advanced Polyurethane Functionalized with Glycidol and Siloxanes

摘要

AbstractCastor-oil-based polyurethane (PU), epoxy (glycidol) terminated polyurethane (EPU), and hydroxy terminated poly (dimethyl siloxane) (HTPDMS) modified EPU (EPDMS) were synthesized. The PU and EPU were synthesized with polyol:diisocyanate and polyol:diisocyanate:glycidol ratio of 1:1.2 and 1:3:3, respectively, whereas EPDMS was prepared by the incorporation of 5?wt.%, 10?wt.%, 20?wt.%, and 30?wt.% of HTPDMS into the EPU. The structural modification of EPDMS was confirmed by solid-state CP/MAS13C and29Si NMR spectroscopy. The results of a tensile test revealed that the EPDMS with 10?wt.% loading of HTPDMS (EPDMS10) exhibited considerable enhancement in the tensile strength and modulus. The scanning electron microscope analysis was performed to understand the increased phase heterogeneity of the samples.]]>