Superhydrophilic Coating with Antibacterial and Oil-Repellent Properties via NaIO4-Triggered Polydopamine/Sulfobetaine Methacrylate Polymerization

Superhydrophilic coatings have been widely used for the surface modification of membranes or biomedical devices owing to their excellent antifouling properties. However, simplifying the modification processes of such materials remains challenging. In this study, we developed a simple and rapid one-s...

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Bibliographic Details
Published in:Polymers 2020-09, Vol.12 (9), p.2008
Main Authors: Chien, Hsiu-Wen, Lin, Hong-Yu, Tsai, Chau-Yi, Chen, Tai-Yu, Chen, Wei-Nian
Format: Article
Language:English
Subjects:
Antifouling coatings
Atomic force microscopy
Bacteria
Biomedical materials
Coatings
Contact angle
Dopamine
Investigations
Membranes
Microscopy
Oxidizing agents
Particle size
Photoelectrons
Photon correlation spectroscopy
Polyesters
Polyethylene terephthalate
Polymerization
Polymers
Resonance scattering
Software
Spectrophotometry
Spectrum analysis
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Summary:Superhydrophilic coatings have been widely used for the surface modification of membranes or biomedical devices owing to their excellent antifouling properties. However, simplifying the modification processes of such materials remains challenging. In this study, we developed a simple and rapid one-step co-deposition process using an oxidant trigger to fabricate superhydrophilic surfaces based on dopamine chemistry with sulfobetaine methacrylate (SBMA). We studied the effect of different oxidants and SBMA concentrations on surface modification in detail using UV–VIS spectrophotometry, dynamic light scattering, atomic force microscopy, X-ray photoelectron spectroscopy, and surface plasmon resonance. We found that NaIO4 could trigger the rate of polymerization and the optimum ratio of dopamine to SBMA is 1:25 by weight. This makes the surface superhydrophilic (water contact angle < 10°) and antifouling. The superhydrophilic coating, when introduced to polyester membranes, showed great potential for oil/water separation. Our study provides a complete description of the simple and fast preparation of superhydrophilic coatings for surface modification based on mussel-inspired chemistry.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym12092008