Surface activity characterization of synthesized polyvinyl alcohol-based nanogel at air-water interface under highly dynamic conditions

The ability to predict the behavior of nanogels at the air-water interface is critical for developing intelligent drug delivery systems. In this investigation, polyvinyl alcohol (PVA)-based nanogels were synthesized via the self-assembly crosslinking method employing fructose. The nanogels were char...

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Bibliographic Details
Published in:Surfaces and interfaces 2023-11, Vol.42, p.103314, Article 103314
Main Authors: Hesan, Mahyar, Lotfi, Marzieh, Gholipour-Kanani, Adeleh, Shafiee, Mojtaba
Format: Article
Language:English
Subjects:
Air-water interface
Local velocity profile
Nanogels
Polyvinyl alcohol
Rising bubble
Surface activity
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Summary:The ability to predict the behavior of nanogels at the air-water interface is critical for developing intelligent drug delivery systems. In this investigation, polyvinyl alcohol (PVA)-based nanogels were synthesized via the self-assembly crosslinking method employing fructose. The nanogels were characterized by means of FE-SEM, FTIR, and DLS analyses. The FE-SEM images confirmed the spherical morphology of the nanogels with an average diameter in the range of 18–30 nm. The polydispersity index of the nanogels, as assessed by the DLS test, was approximately 0.4. Subsequently, the impact of pure PVA and its produced nanogels on the hydrodynamics of a single air bubble ascending in aqueous solutions was explored, revealing that the presence of these molecules at the air-water interface results in a decrease in the local velocity profile (LVP) due to their surface activities. Finally, the results of the pendant drop measurements demonstrate that nanogels are more surface active than PVA. [Display omitted]
ISSN:2468-0230
2468-0230
DOI:10.1016/j.surfin.2023.103314