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M. M. A. Nikje, F. H. A. Mohammadi

Sorbitol/glycerin/water ternary system as a novel glycolysis agent for flexible polyurethane foam

in the chemical recycling using microvawe radiation (in English)

Polimery 2009, No 7/8, 541


DOI: dx.doi.org/10.14314/polimery.2009.541

Summary

An eco-friendly and convenient method was performed for recycling of flexible polyurethane foams. Glycerin/sorbitol/water mixture was used as destroying solvent and sodium hydroxide as a catalyst. In all reactions phase separation appeared after complete foam digestion. The upper phase contained recycled polyol and lower phase was a brown liquid that applied in rigid polyurethane foam formulations. The mechanical properties of formulated foams were compared with virgin polyol formulated sample. Reactions were studied using various glycerin/sorbitol/water ratios and the recovered polyols were characterized by spectroscopic methods and data compared with a virgin sample.


Key words: PUR foams, hydroglycolysis, sorbitol, microwave, polyol recovery


e-mail: alavim2006@yahoo.com


M. M. A. Nikje, F. H. A. Mohammadi

Sorbitol/glycerin/water ternary system as a novel glycolysis agent for flexible polyurethane foam in the chemical recycling using microvawe radiation (in English)