The use of cellulose nanocrystals to enhance the thermal insulation properties and sustainability of rigid polyurethane foam

Septevani, Athanasia A., Evans, David A. C., Annamalai, Pratheep K. and Martin, Darren J. (2017) The use of cellulose nanocrystals to enhance the thermal insulation properties and sustainability of rigid polyurethane foam. Industrial Crops and Products, 107 114-121. doi:10.1016/j.indcrop.2017.05.039


Author Septevani, Athanasia A.
Evans, David A. C.
Annamalai, Pratheep K.
Martin, Darren J.
Title The use of cellulose nanocrystals to enhance the thermal insulation properties and sustainability of rigid polyurethane foam
Journal name Industrial Crops and Products   Check publisher's open access policy
ISSN 0926-6690
1872-633X
Publication date 2017-11-15
Year available 2017
Sub-type Article (original research)
DOI 10.1016/j.indcrop.2017.05.039
Open Access Status Not yet assessed
Volume 107
Start page 114
End page 121
Total pages 8
Place of publication Amsterdam, Netherlands
Publisher Elsevier BV
Language eng
Abstract The enhancement of thermal insulation performance of rigid polyurethane foam (RPUF) achieved through a cost-effective and sustainable approach still remains an ongoing interest in both industry and academia. This study reports an efficient approach of reducing thermal conductivity and enhancing mechanical properties of RPUF without affecting the density, by incorporating a very low fraction of cellulose nanocrystal (CNC) through an optimised solvent-free ultrasonication method. A 5% reduction in thermal conductivity of RPUF afforded by the addition of 0.4 wt.% of CNC without any further surface chemical modification is almost double the effect of any other unmodified nanoparticulate nucleating agent reported so far. This reduction in thermal conductivity is attributed to the better compatibility of the CNC with the polyol and the foam to allow maximum nucleation and therefore the lowest initial thermal conductivity. Further, the Young's modulus of an optimised nanocomposite foam was also enhanced to the control RPUF perpendicular to foam rise.
Keyword Cellulose nanocrystals
Nanocomposites
Rigid polyurethane foam
Taguchi method
Thermal conductivity
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
Australian Institute for Bioengineering and Nanotechnology Publications
 
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