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Glucose-Biobased Non-Isocyanate Polyurethane Rigid Foams

Xuedong Xi1,2, A. Pizzi1,*, C. Gerardin3, Guanben Du2
LERMAB-ENSTIB, University of Lorraine, Epinal, France.
Southwest Forestry University, Kunming, Yunnan, China.
LERMAB, Faculty of Sciences, University of Lorraine, Nancy, France .
* Corresponding Author: .

Journal of Renewable Materials 2019, 7(3), 301-312. https://doi.org/10.32604/jrm.2019.04174

Issue published 14 July 2021

Abstract

Glucose-based non-isocyanate polyurethanes (NIPU) were prepared by reaction of glucose with dimethyl carbonate and hexamethylene diamine. These were used to prepare partially biobased polyurethane foams by reaction with NaHCO3 as a blowing agent and addition of a silane coupling agent having different functions such as coreactant and adjuvant to obtain more uniform and smaller cells. The foams were foamed and hardened by applying heat. The foams presented very limited fire resistance indicating that as for synthetic polyurethane foams the eventual use of a fire retardant appears to be necessary. The 2 hours water absorption was used to indicate if close cells or open cells occur. More characteristic is their stress strain behaviour. While compression does indeed flatten the cell walls nonetheless the cellular structure is maintained and the cell walls have not been destroyed. This indicates a certain level of elasticity in the cell walls of formulations containing NaHCO3. In effect the macro-appearance of this foams, confirms this explanation as the foam is densified and holds together.

Keywords

Polyurethane biofoams, non-isocyanate polyurethanes, NIPU, biofoams, glucose

Cite This Article

Xi, X., Pizzi, A., Gerardin, C., Du, G. (2019). Glucose-Biobased Non-Isocyanate Polyurethane Rigid Foams. Journal of Renewable Materials, 7(3), 301–312.

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This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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