Synthesis of poly(alkylaniline)s by aqueous chemical oxidative polymerization and their use as stimuli-responsive liquid marble stabilizer

Poly(alkylaniline) grains with several tens micrometer-sized diameter were successfully synthesized by aqueous chemical oxidative polymerization. The grains were aggregates consisting of submicrometer sized-atypical particles, which was confirmed by scanning electron microscopy studies. Static conta...

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Bibliographic Details
Published in:Polymer (Guilford) 2021-01, Vol.212, p.123295, Article 123295
Main Authors: Uda, Makoto, Higashimoto, Shinya, Hirai, Tomoyasu, Nakamura, Yoshinobu, Fujii, Syuji
Format: Article
Language:English
Subjects:
Aerial thermography
Air-water interface
Chemical synthesis
Contact angle
Contamination
Diameters
Grains
Hydrophobicity
Infrared radiation
Light effects
Liquid marble
Locomotion
Marble
Oil pollution
Poly(alkylaniline)s
Polymerization
Remote control
Scanning electron microscopy
Stabilizers (agents)
Thermography
Water drops
Water pollution
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Summary:Poly(alkylaniline) grains with several tens micrometer-sized diameter were successfully synthesized by aqueous chemical oxidative polymerization. The grains were aggregates consisting of submicrometer sized-atypical particles, which was confirmed by scanning electron microscopy studies. Static contact angle measurements of water droplets on the compressed pellets of the grains indicated that the hydrophobicity increased with an increase of alkyl group length and the alkyl groups bonded to phenyl ring is expected to be exposed to air phase. The data obtained through thermography indicated the grains showed near infrared light-to-heat photothermal property. The dried grains could work as an effective liquid marble stabilizer by efficient adsorption to air-water interface. The remote locomotion control of liquid marble could be attained by near-infrared light-induced Marangoni flow. Furthermore, the liquid marbles could detect oil contamination on water surface by disruption. Synthesis of poly(alkylaniline) grains as a stimuli-responsive liquid marble stabilizer by aqueous chemical oxidative polymerization. [Display omitted] •Poly(alkylaniline) grains were synthesized by aqueous chemical oxidative polymerization.•Poly(alkylaniline) grains functioned as a liquid marble stabilizer.•Light irradiation induced locomotion of liquid marble due to Marangoni propulsion.•Liquid marble could detect oil contamination on water surface.
ISSN:0032-3861
1873-2291
DOI:10.1016/j.polymer.2020.123295