Novel biomimetically based ice-nucleating coatings
2007 (English)In: International Journal of Materials Research - Zeitschrift für Metallkunde, ISSN 1862-5282, Vol. 98, no 7, 597-602 p.Article in journal (Refereed) Published
Ice nucleation and ice repellence are properties which appear to be contradictory. Both are of great importance: The former for ice generation in the food and cooling industry and the latter for avoiding the adhesion of ice to structures. By mimicking a peculiar survival mechanism of some cold-adapted organisms a new type of coating system, able to both nucleate and repel the ice was developed. A heterogeneous surface containing locally isolated nucleation points in a low surface energy matrix were synthesised by a sol-gel process. The ice nucleating and ice releasing performance of the new ice nucleating coatings (INC) has been tested in a specially designed crystallisation chamber in comparison to commercial low surface energy coating systems. A mixture of demineralised water and a water freezing point depressant was used in the experiments. Compared to the commercial coatings, the INC surfaces showed a much higher ice nucleation rate but also a distinctly better ice releasing ability. Obviously the novel concept of local embedded nucleation points improves the ice repellent properties of surfaces.
Place, publisher, year, edition, pages
2007. Vol. 98, no 7, 597-602 p.
biomimetic, ice nucleating proteins (INP), ice nucleating coatings, ice repellent coatings, sol-gel processing
IdentifiersURN: urn:nbn:se:kth:diva-37328DOI: 10.3139/146.101518ISI: 000248753600008ScopusID: 2-s2.0-34547673190OAI: oai:DiVA.org:kth-37328DiVA: diva2:433188