Cited by 177Polymer Surface Interaction StudiesSurface Modification and SuperhydrophobicityConducting polymers and applications

Co-deposition Kinetics of Polydopamine/Polyethyleneimine Coatings: Effects of Solution Composition and Substrate Surface

Lv, Yan, Yang, Shang-Jin, Du, Yong, Yang, Hao-Cheng, Xu, Zhi-Kang·2018·Langmuir

Abstract

Polydopamine-based chemistry has been employed for various surface modifications attributed to the advantages of universality, versatility, and simplicity. Co-deposition of polydopamine (PDA) with polyethyleneimine (PEI) has then been proposed to realize one-step fabrication of functional coatings with improved morphology uniformity, surface hydrophilicity, and chemical stability. Herein, we report the co-deposition kinetics related to the solution composition with different dopamine/PEI ratios, PEI molecular weights, dopamine/PEI concentrations, and the substrate surface with varying chemistry and wettability. The addition of PEI to dopamine solution suppresses the precipitation of PDA aggregates, resulting in an expanded time window of steady co-deposition compared with that of PDA deposition. Low-molecular-weight PEI at low concentration accelerates the co-deposition process, while high-molecular-weight PEI and high concentration of either PEI or dopamine/PEI are detrimental to the co-deposition efficiency. Meanwhile, the surface morphology and chemical composition of the co-deposition coatings can be regulated by the solution conditions during co-deposition. Moreover, obvious deviations in the co-deposition rate and the amount of substrates bearing various functional groups, such as alkyl, phenyl, hydroxyl, and carboxyl, are revealed, which are quite different from PDA deposition. The initial adsorption rates further reflect the change in interactions between the aggregat…

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Crossref · 10.1021/acs.langmuir.8b02454

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Authors
Lv, Y., Yang, S.-J., Du, Y., Yang, H.-C., & Xu, Z.-K.
Affiliations
Zhejiang University (CN)
Corresponding author
Xu, Zhi-Kang
Venue
Langmuir
Published
2018-10-16
Volume
34
Issue
44
Pages
13123-13131
ISSN
  • 0743-7463 (ISSN-L)
  • 1520-5827
OpenAlex
W2896519858
Cited by
177
References
37
Citations by year
2026: 24 · 2025: 22 · 2024: 31 · 2023: 33 · 2022: 27 · 2021: 22 · 2020: 14 · 2019: 4
FWCI
3.39
Type
journal article
Language
en
Open access
closed
Locations
  • Langmuir (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Natural Science Foundation of China (21534009)
Topics
  • Physical Sciences › Materials Science › Surfaces, Coatings and Films › Polymer Surface Interaction Studies
  • Physical Sciences › Materials Science › Surfaces, Coatings and Films › Surface Modification and Superhydrophobicity
  • Physical Sciences › Materials Science › Polymers and Plastics › Conducting polymers and applications
Keywords
polydopamine, polyethyleneimine, surface coating, substrate wettability, substrate surface chemistry, surface hydrophilicity, adsorption rate, surface modification

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