RT Journal Article
T1 Preparation of cellulose acetate film with dual hydrophobic-hydrophilic properties using solution blow spinning
A1 Kramar, Ana
A1 González Benito, Francisco Javier
AB 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.
PB Elsevier
SN 0264-1275
SN 1873-4197 (online)
YR 2023
FD 2023-03-01
LK https://hdl.handle.net/10016/38813
UL https://hdl.handle.net/10016/38813
LA eng
NO This work was financially supported by CONEX-Plus program of Universidad Carlos III de Madrid (UC3M) and the European Commission through the Marie-Sklodowska Curie COFUND Action (Grant Agreement No 801538). Authors also appreciate the financial support received from AEI, The Ministry of Science and Innovation of Spain [PID2020-112713RB-C22 and –C21], Universidad Carlos III de Madrid, Funds for Investigation of Fco. Javier González Benito [2012/00130/004] and the strategic Action in Multifunctional Nanocomposite Materials [ 2011/00287/003].
DS e-Archivo
RD 18 jul. 2024