Nanotubes and nano-coral by the fibre template method

Pirjo Heikkilä, Terhi Hirvikorpi, Jenni Sievänen, Ali Harlin, Mika Vähä-Nissi, Heidi Hildén

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional


Tubes by fibre templates (TUFT) is a process that is used to fabricate tubular materials. Tube dimension depend on the template fibre size and coating thickness, while tube regularity depend on the coating and template removal methods. We have studied preparation of tubes using electrospun fibres of polyvinyl alcohol (PVA), polyvinyl pyrrolidone (PVP) and polyamide-66 (PA) as templates, atomic layer deposition (ALD) of Al2O3 as coating, and dissolution as well as the heat treatment in template removal. Smooth tubes were obtained is dissolution of PVP and PA templates and when heat treatment was used as template removal. Dissolution of PVA, on the other hand, produced novel nanostructured and high surface area coral-like material. This material, which we have called "nano-coral", has a relatively high surface area due to the interconnected cavities formed after the removal of the template. Nanotubular materials has potential in catalysts carriers, filtration and other application fields
Original languageEnglish
Title of host publicationResearch highlights in industrial biomaterials
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
ISBN (Electronic)978-951-38-7858-0
ISBN (Print)978-951-38-7857-
Publication statusPublished - 2012
MoE publication typeD2 Article in professional manuals or guides or professional information systems or text book material

Publication series

SeriesVTT Research Highlights

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