Effect of unrefined crude glycerol composition on the properties of polyurethane foams
authors Gama, NV; Soares, B; Freire, CSR; Silva, R; Ferreira, A; Barros-Timmons, A
nationality International
journal JOURNAL OF CELLULAR PLASTICS
author keywords Crude glycerol; unrefined crude glycerol; polyurethane foams; chemical composition; foaming process; sustainability evaluation
keywords LIQUEFACTION; BIOPOLYOLS; POLYOLS; CORK; OXYPROPYLATION; CHAINS
abstract The aim of this study is to evaluate the possibility of using unrefined crude glycerol (CG), a byproduct of the biodiesel industry, in the production of polyurethane foams. In order to assess the suitability of this raw material for the production of polyurethane foams, two samples of crude glycerol with different compositions in glycerol, fatty acids, and methyl esters were used directly, without any pretreatment or purification. Additionally, one of these samples was also submitted to a pre-treatment step in order to evaluate the advantage of purifying the raw material and, for comparison, pure glycerol was also used to prepare polyurethane foams. Both chemical and structural characterizations of the produced foams, as well as the thermomechanical properties determined, showed that unrefined crude glycerol is a suitable ecopolyol for the production of polyurethane foams. Although the presence of fatty acids and esters affects their mechanical performance, this issue can be explored to tune the properties of the ensuing polyurethane foams. Furthermore, the evaluation of the impact of using unrefined CG on the sustainability of polyurethane foams production yielded promising results.
publisher SAGE PUBLICATIONS LTD
issn 0021-955X
year published 2018
volume 54
issue 3
beginning page 633
ending page 649
digital object identifier (doi) 10.1177/0021955X17732304
web of science category Chemistry, Applied; Polymer Science
subject category Chemistry; Polymer Science
unique article identifier WOS:000432083200011

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