Pine Bark as a Lignocellulosic Resource for Polyurethane Production: An Evaluation.

ABSTRACT: This study explores the potential of pine bark-a highly accessible and underexploited by-product of forestry and food processing-as a renewable raw material for rigid polyurethane (PUR) foam production. Under optimal extraction conditions, water-soluble extractives rich in carbohydrates were isolated from biomass with a yield of 25% and subsequently condensed with propylene carbonate (PC) to produce bio-based polyols. The polyols synthesized at a PC/OH molar ratio ranging from 1 to 5 were incorporated into rigid PUR foam formulations as substitutes for commercial polyether polyols. The foams containing bio-polyols synthesized at a PC/OH ratio of 3 demonstrated the highest compressive strength and thermal insulation performance, exceeding those of the reference material by 30% and 9%, respe

SUBMITTER: Arshanitsa A 

PROVIDER: S-EPMC12787510 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature