Rapid Coating of Aqueous Pearls with Carbon Nanotubes via In Situ Polymerization of Dopamine | Zendy

Lin Rong | Zendy; Xiaoqing Mu | Zendy; Jinchao Zhao | Zendy; Leping Huang | Zendy; Mingqiao Ye | Zendy; Na Wang | Zendy

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Rapid Coating of Aqueous Pearls with Carbon Nanotubes via In Situ Polymerization of Dopamine

Author(s) -

Lin Rong,

Xiaoqing Mu,

Jinchao Zhao,

Leping Huang,

Mingqiao Ye,

Na Wang

Publication year - 2021

Publication title -

advances in materials science and engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.356

H-Index - 42

eISSN - 1687-8442

pISSN - 1687-8434

DOI - 10.1155/2021/6757935

Subject(s) - materials science , polymerization , dopamine , carbon nanotube , aqueous solution , coating , in situ , in situ polymerization , chemical engineering , nanotechnology , composite material , organic chemistry , polymer , chemistry , engineering , neuroscience , biology

Millimeter-scale calcium alginate aqueous core capsules (mm-CaSA-Caps) are suitable for embedding of temperature and chemical sensitive substances because of its excellent biocompatibility and biodegradability. In this study, mm-CaSA-Caps were coated with multiwalled carbon nanotubes (MWNTs) via in situ self-polymerization of dopamine (DA) under mild conditions. During the modification process, mm-CaSA-Caps transferred quickly from colorless and transparent capsules to dark and opaque “pearls” in 15 min. The obtained MWNTs-polydopamine- (PDA-) modified mm-CaSA-Caps (mm-MWNTs-PDA@CaSA-Caps) retained the spherical appearance of mm-CaSA-Caps with uniform coating of MWNTs-PDA. Obviously, the MWNTs were easily coated on the mm-PDA@CaSA-Caps due to the strong adhesive property of PDA. As the MWNTs content increased, the stacking density of MWNTs on surface of the mm-MWNTs-PDA@CaSA-Caps raised. The water loss ratio of mm-MWNTs-PDA@CaSA-Caps was enhanced ascribed to increasing the path length of water by raising stacking density of MWNTs. This study provided a new path for enhancement of the barrier property of hydrogel capsules.

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