Preparation of Semi-rigid and Rigid Polyurethane Foams Through Soy Hull Augmentation
Cohen, L. J. and Ong, C. and Arendt, C.
A process for generating controlled-rigidity polyurethane foam has been developed. The process relies on incorporation of partially hydrolyzed soy hulls into water blown polyurethane formulations. The process involves base hydrolysis of soy hulls. The partial hydrolysis of cellulose, hemicellulose, and lignins enhances interaction between isocyanate and the hydroxyl groups of the oligosaccha-rides and the amine groups of the oligopeptides, controlled -rigidity foam structure. Direct incorporation of ground soy hulls, by contrast, leads to high-density foam with poor mechanical properties. Results show that soy hull augmented foams possess superior tensile strength, compressive strength, and hardness.
J. Chen et al., "Preparation of Semi-rigid and Rigid Polyurethane Foams Through Soy Hull Augmentation," International SAMPE Symposium and Exhibition (Proceedings), Society for the Advancement of Material and Process Engineering (SAMPE) Publishing, Jan 2003.
Article - Conference proceedings
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01 Jan 2003