Structure-property relationships of flexible, non-isocyanate polyurethane foams from lignin and castor oil-based reagents.

ABSTRACT: Polyurethane foam is a valuable material with applications across the automotive, packaging, construction, appliance, and furniture industries. However, traditional polyurethane foams are made from petroleum-based precursors including harmful isocyanates. Isocyanates are the leading cause of workplace asthma and are made from toxic phosgene gas, representing a challenge to green chemistry principles. To address these concerns, non-isocyanate polyurethane (NIPU) foams replace the traditional polyurethane reaction with a safer, non-isocyanate process most often employing cyclic carbonates and diamines. Current approaches to NIPU foams struggle to meet the low-density and flexibility of commercial foams and also employ many petroleum-derived and toxic agents. This work demonstrates the use of

SUBMITTER: Evancho K 

PROVIDER: S-EPMC12516486 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature