THERMAL SCIENCE

International Scientific Journal

Zhen-Zhen Xu

,

Qin-Qin Yang

,

Li-Bin Wang

,

Ming-Qiang Guan

,

Zhi Liu

,

Jiang-Hui Zhao

BIOMIMETIC MICROSPHERES WITH ROUGH STRUCTURE BY THE GEOMETRIC POTENTIAL THEORY

ABSTRACT
Rough structure microspheres developed using electrospinning show many superior properties, such as increased specific surface area and enhanced wettability, yielding numerous benefits to the applications in adsorption, separation, and others. In this study, biomimetic rough microspheres on string of polymethyl methacrylate nanofiber with hierarchical structure of micron-scale microsphere, and nanoscale Y-shape edges on the microsphere were innovatively and success-fully developed by electrospinning. The resulting microsphere exhibited a steering-wheel-like Y shape, and the formation process was physically explained by the geometric potential theory. In the spinning process, irregular hexahedron-like droplet was firstly formed. Then, the hexahedron-like droplet changed to tetrahedron-like after the bottom contacted the collector. The tetrahedron-like droplet evolved into Y-shaped microsphere due to the geometric potential and the collapse of the center part owing to the solvent evaporation. Furthermore, similar to the natural lotus leaf, the hierarchical steering-wheel structure strengthened the nanofiber membrane roughness and endowed the membrane with superhydro-phobicity, indicating the potential application in water treatment (oil-water separation, and dye and heavy metal ion adsorption), functional surface materials (self-cleaning fabrics), energy generation and other salient areas.
KEYWORDS
biomimetic, geometric potential, hierarchical, microsphere, superhydrophobicity, oil water separation
PAPER SUBMITTED: 2023-04-24
PAPER REVISED: 2023-08-06
PAPER ACCEPTED: 2023-08-07
PUBLISHED ONLINE: 2024-05-18
DOI REFERENCE: https://doi.org/10.2298/TSCI2403269X
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2024, VOLUME 28, ISSUE Issue 3, PAGES [2269 - 2275]
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Biomimetic microspheres with rough structure by the geometric potential theory

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence