Nonfood grade biopolyols containing high lignin content for rigid PU biofoams

Abstract

This paper presents the continuation of the development of renewable and non-food grade biopolyols containing lignin for the production for rigid PU foams. The new development of the biopolyos containing high content of lignin and its effect on the opening cell foams will be reported. the foaming ability as well as the characteristic and performance of the obtained biofoams in terms of density, cellular morphology, opening cell content, mechanical properties and thermal conductivity will be presented. The results demonstrate lignin can be used at higher contents in the biopolyol for the production of insulation foam if the modification and formulation are appropriate.NRC publication: Ye