Poly-2-oxazoline-derived polyurethanes: A versatile synthetic approach to renewable polyurethane thermosets

Identifier:  imarina:9285086

Handle: https://hdl.handle.net/20.500.11797/imarina9285086

Authors:  Del Rio, E; Lligadas, G; Ronda, JC; Galià, M; Cádiz, V

Abstract:
2-Nonyl-2-oxazoline and 2-(9-decenyl)-2-oxazoline have been copolymerized in different proportions by cationic ring-opening polymerization to obtain a series of random linear copolymers with tailored molecular weight and double bond functionality in the side chains. Thiol-ene addition of 2-mercaptoethanol has been used to produce a set of polyoxazoline-polyols under mild conditions and with quantitative double bond transformation. The polyols obtained in this way were reacted with methylene-bis(phenylisocyanate) to yield a series of amorphous and semicrystalline polyurethane networks. The thermal stability and the thermomechanical properties of these thermosets have been studied and related with the structure of the parent polyols. © 2011 Wiley Periodicals, Inc.