A1 Journal article (refereed)
Cellulose-inorganic hybrids of strongly reduced thermal conductivity (2022)
Spiliopoulos, P., Gestranius, M., Zhang, C., Ghiyasi, R., Tomko, J., Arstila, K., Putkonen, M., Hopkins, P. E., Karppinen, M., Tammelin, T., & Kontturi, E. (2022). Cellulose-inorganic hybrids of strongly reduced thermal conductivity. Cellulose, 29(15), 8151-8163. https://doi.org/10.1007/s10570-022-04768-3
JYU authors or editors
Publication details
All authors or editors: Spiliopoulos, Panagiotis; Gestranius, Marie; Zhang, Chao; Ghiyasi, Ramin; Tomko, John; Arstila, Kai; Putkonen, Matti; Hopkins, Patrick E.; Karppinen, Maarit; Tammelin, Tekla; et al.
Journal or series: Cellulose
ISSN: 0969-0239
eISSN: 1572-882X
Publication year: 2022
Publication date: 11/08/2022
Volume: 29
Issue number: 15
Pages range: 8151-8163
Publisher: Springer Science and Business Media LLC
Publication country: Netherlands
Publication language: English
DOI: https://doi.org/10.1007/s10570-022-04768-3
Publication open access: Openly available
Publication channel open access: Partially open access channel
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/82772
Abstract
The employment of atomic layer deposition and spin coating techniques for preparing inorganic–organic hybrid multilayer structures of alternating ZnO-CNC layers was explored in this study. Helium ion microscopy and X-ray reflectivity showed the superlattice formation for the nanolaminate structures and atomic force microscopy established the efficient control of the CNCs surface coverage on the Al-doped ΖnO by manipulating the concentration of the spin coating solution. Thickness characterization of the hybrid structures was performed via both ellipsometry and X-ray reflectivity and the thermal conductivity was examined by time domain thermoreflectance technique. It appears that even the incorporation of a limited amount of CNCs between the ZnO laminates strongly suppresses the thermal conductivity. Even small, submonolayer amounts of CNCs worked as a more efficient insulating material than hydroquinone or cellulose nanofibers which have been employed in previous studies.
Keywords: thin films; atomic layer deposition; nanocellulose; zinc oxide; heat conduction; heat insulation
Free keywords: cellulose nanocrystals; zinc oxide; hybrids; thermal conductivity; aluminum doping
Contributing organizations
Ministry reporting: Yes
Reporting Year: 2022
JUFO rating: 2