Bionic Preparation and Characterization of Superhydrophilic Functional Surface Based on Shark Skin Mucus Secretion

doi:10.7503/cjcu20230089

Abstract

Abstract:

The skin of sharks exhibit superhydrophilic and underwater superoleophobic properties through the continuous secretion of mucus. Inspired by this， we propose a simple route to create superhydrophilic surface through the introduction of hydrophilic modifiers into the polymer matrix， simulating the secretion of shark skin mucus by means of spontaneous migration of hydrophilic modifiers onto the polymer surface. In this paper， polyethylene glycol type nonionic surfactants were selected as hydrophilic modifiers， which were firstly mixed with polyurethane acrylate prepolymer， after that， the mixture was cured by UV radiation to obtain the bionic functional surface. Research results showed that the introduction of hydrophilic modifiers such as Tween 20， Tween 40， Tween 60， Tween 80 or Triton X100 into the UV-curable polyurethane system can obtain superhydrophilic surface with stable self-repairing function， excellent light transmittance， antifogging and oil-water separation effects. This method is simple， cost-effective， and environmentally friendly， which provides a new idea for the design and preparation of bionic superhydrophilic surface， and therefore， it is expected to be effectively used in biomedical coatings， oil-water separation， antifouling coatings， etc.

Key words: Biomimetic material, Superhydrophilic property, UV-curable polyurethane, Antifogging property, Oil-water separation

CLC Number:

O631

TrendMD:

LIU Yunhong, PENG Xinyan, LIU Xiaolong. Bionic Preparation and Characterization of Superhydrophilic Functional Surface Based on Shark Skin Mucus Secretion[J]. Chem. J. Chinese Universities, 2023, 44(8): 20230089.

Figures/Tables 14

References 18

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Sample	Mdar fraction（%）
Sample	C	O	N
SPU⁃blank	64.2	33.7	2.1
SPU⁃Tween 20	63.1	35.3	0.6
SPU⁃Triton X100	61.7	38.1	0.2

Sample	Mdar fraction（%）
Sample	C	O	N
SPU⁃blank	64.2	33.7	2.1
SPU⁃Tween 20	63.1	35.3	0.6
SPU⁃Triton X100	61.7	38.1	0.2

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