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Glycolysis of the rigid PUR‐PIR foam modified with starch
Author(s) -
Czupryński Bogusław,
Liszkowska Joanna,
PaciorekSadowska Joanna
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.34938
Subject(s) - polyurethane , biodegradation , starch , diethylene glycol , polyol , materials science , decomposition , degradation (telecommunications) , chemical engineering , composite material , chemical decomposition , chemistry , organic chemistry , ethylene glycol , telecommunications , computer science , engineering
of natural fibbers and natural materials into plastics makes their biodegradation easier. Time of degradation of plastic wastes (also foams) in dump becomes shorter. In order to facilitate biodegradation of foams, starch in amount from 5% to 25% wt with respect to the mass of other components was introduced into polyurethane–polyisocyanurate (PUR‐PIR) foams. Starch is susceptible to the action of bacteria in soil and thus, to decomposition. Polyurethane foams can be subjected to easy chemical degradation in glycols. From among all PUR‐PIR foams prepared, one foam with optimum properties (S10 containing 10% wt of starch) was selected for further experiments. Then, the waste “original” foam S10 was subjected to glycolysis in diethylene glycol and ethanolamine (as catalyst). Glycolysate was applied for synthesis of “new” foams. Three foams GS10 containing 0.1, 0.2, and 0.3 of chemical equivalent (ch.eq.) of glycolysate with respect to amount of the original polyol Rokopol RF 55 were prepared. Effect of the amount of glycolysis product in foam composition on properties on the “new” foams was studied. Foam W was used as a reference without starch (W). © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012