Preparation of cellulose acetate film with dual hydrophobic-hydrophilic properties using solution blow spinning
Articles
Overview
published in
- MATERIALS & DESIGN Journal
publication date
- March 2023
start page
- 1
end page
- 12
volume
- 227
Digital Object Identifier (DOI)
full text
International Standard Serial Number (ISSN)
- 0264-1275
Electronic International Standard Serial Number (EISSN)
- 1873-4197
abstract
- Solution blow spinning (SBS), a processing method alternative to electrospinning, where pressured air is used instead of an electric field, was used in this work for the preparation of cellulose acetate (CA) materials. The sequential use of SBS to produce a double-layered film is also investigated. Mixtures of acetone with acetic acid or N,N-dimethylformamide (DMF) were studied as systems for polymer solution preparation. The type of produced material (flat film or multi-structured membranes constituted from submicrometric fibers with beads), its thermal properties, crystallinity, and morphology are more dependent on the solvent system than other SBS processing parameters. Roughness and porosity of differently produced materials influence wettability measured by the contact angle, which ranges in this work from approx. 69.8 degrees ± 3 degrees for a flat film to 104 degrees ± 5 degrees for fibrous material. Finally, a double-layered film, prepared by sequential SBS of individual layers different in terms of wettability, renders a standalone film of dual wettability, with one side hydrophobic and the other hydrophilic.
Classification
subjects
- Materials science and engineering
keywords
- cellulose acetate; double-layered film; dual wettability; solution blow spinning