Investigation of cellulose filaments as filler in rigid insulating polyurethane foam

Cellulose is a biopolymer that has broad potential applications including in building insulation, and it was studied for its as filler material. A closed-cell polyurethane foam insulation formulation developed, cellulose filaments (CFs) were introduced at varying percentages. The viscosity morphology of the formulations studied, different properties, such water vapor permeability, reaction kinetics, density, porosity, thermal conductivity, compressive strength foams function content. commercial also tested reference. impacted formulations’ viscosity, all properties resulting insulating For example, samples containing 5% found to perform differently than 0%, 1% 2.5% mainly due agglomerate formation, which cell size (about 0.1 mm2 versus mean over 0.4 5%), differential sorption (with mass change 2%wt 0 parts per hundred polyol 2.5%wt from 0% 95% relative humidity). However, required performances by standards material always fulfilled regardless amount present.