Universität zu Köln

Shahbazi, Mohammad-Ali, Ghalkhani, Masoumeh and Maleki, Hajar ORCID: 0000-0002-2813-4700 (2020). Directional Freeze-Casting: A Bioinspired Method to Assemble Multifunctional Aligned Porous Structures for Advanced Applications. Adv. Eng. Mater., 22 (7). WEINHEIM: WILEY-V C H VERLAG GMBH. ISSN 1527-2648

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Abstract

Herein, the potential of directional freeze-casting techniques as a very generic, green, and straightforward approach for the processing of various functional porous materials is introduced. These materials include 3D monoliths, films, fibers, and microspheres/beads, which are obtained by the assembly of network building blocks originated from cryoassembly of the various aqueous-based systems. The process simply relies on 1) directional freezing of the slurry through contact with a cold surface, 2) maintaining the slurry at the frozen state for a particular time with controlling the freezing parameters and directions, and 3) sublimation of the created ice crystal templates inside the developed structure to translate the ice growth pattern to final porous structure. The materials developed with such a cryogenic process contain a highly complex porous structure, e.g., a hierarchical and well-aligned microstructure in different levels, which renders a high control over the physicochemical and mechanical functionalities. Due to the versatility and controllability of this technique, the process can also be extended for the mimicking of the structures found in natural materials to the bulk materials to assemble bioinspired porous composites with many useful mechanical and physical features. The aim, herein, is to give a brief overview of the recent advances in developing anisotropic porous inorganic, organic, hybrid, and carbonaceous materials with a particular emphasis on materials with biomimicking microstructure using directional ice templating approach and to highlight their recent breakthrough for different high-performance applications.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Shahbazi, Mohammad-Ali UNSPECIFIED UNSPECIFIED UNSPECIFIED Ghalkhani, Masoumeh UNSPECIFIED UNSPECIFIED UNSPECIFIED Maleki, Hajar UNSPECIFIED orcid.org/0000-0002-2813-4700 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-336161
DOI:	10.1002/adem.202000033
Journal or Publication Title:	Adv. Eng. Mater.
Volume:	22
Number:	7
Date:	2020
Publisher:	WILEY-V C H VERLAG GMBH
Place of Publication:	WEINHEIM
ISSN:	1527-2648
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language 3-DIMENSIONAL CRUMPLED GRAPHENE; ICE CRYSTAL-GROWTH; THERMAL-CONDUCTIVITY; BORON-NITRIDE; AEROGEL MICROSPHERES; NANOCOMPOSITE FOAM; POLYMER COMPOSITES; HIGHLY EFFICIENT; CARBON AEROGELS; CELL-CULTURE Multiple languages Materials Science, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/33616