Biofouling-Inspired Growth of Superhydrophilic Coating of Polyacrylic Acid on Hydrophobic Surfaces for Excellent Anti-Fouling

Han Tianyuan; Ma Zhuoyuan; Wang Dayang

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Biofouling-Inspired Growth of Superhydrophilic Coating of Polyacrylic Acid on Hydrophobic Surfaces for Excellent Anti-Fouling

机译：疏水表面上聚丙烯酸的超顺水晶涂层的生物污垢启动的生长增长

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In this work, we demonstrated effective adsorption of poly(acrylic acid) (PAA) in saline water on various hydrophobic substrates, ranging from polyethylene and polytetrafluoroethylene, to form densely packed monolayers with water contact angle as low as 6.5 degrees in air. This was a result of the synergy of long-range hydrophobic interactions between individual PAA chains and hydrophobic surfaces and short-range hydrogen bonding between neighboring PAA chains, reminiscent of the interaction balance encountered in biofouling. The PAA monolayers adsorbed on hydrophobic surfaces showed the ultrahigh packing density of surface COOH groups of 4.8 nm(-2), which contributed to the surface superhydrophilicity and its stability against surface reconstruction during aging even at temperature higher than PAA glass transition. Further, conjugation of the adsorbed PAA monolayers with polyethylene glycol results in excellent antifouling with nearly zero adsorption of proteins.

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《ACS Macro Letters》 |2021年第3期|共5页
作者
Han Tianyuan; Ma Zhuoyuan; Wang Dayang;
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Jilin Univ Coll Chem State Key Lab Inorgan Synth &

Preparat Chem Changchun 130012 Peoples R China;

Jilin Univ Coll Chem State Key Lab Inorgan Synth &

Preparat Chem Changchun 130012 Peoples R China;

Jilin Univ Coll Chem State Key Lab Inorgan Synth &

Preparat Chem Changchun 130012 Peoples R China;

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正文语种 eng
中图分类有机化学;
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Biofouling-Inspired Growth of Superhydrophilic Coating of Polyacrylic Acid on Hydrophobic Surfaces for Excellent Anti-Fouling

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