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Assembly of poly(dopamine) films mixed with a nonionic polymer
Yan Zhang1, Bo Thingholm, Kenneth N Goldie
1State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai, People's Republic of China.
Langmuir : the ACS Journal of Surfaces and Colloids
|December 5, 2012
Summary
Poly(dopamine) coatings mixed with PEG or PVA form films without linkers. PVP is the first material found to inhibit poly(dopamine) film formation, advancing coating applications.
Area of Science:
- Materials Science
- Polymer Chemistry
- Surface Science
Background:
- Poly(dopamine) (PDA) coatings are versatile for various applications.
- Understanding PDA film formation is crucial for optimizing its use.
Purpose of the Study:
- Investigate PDA film deposition with nonionic polymers (PEG, PVA, PVP) on silica.
- Assess the potential for coating silica colloids to create polymer capsules and liposomes.
- Identify factors influencing PDA film assembly.
Main Methods:
- Film deposition on silica substrates.
- Analysis using X-ray photoelectron spectroscopy (XPS).
- Mass measurement using quartz crystal microbalance (QCM).
Main Results:
- Mixed PDA/PEG and PDA/PVA films deposited on silica without covalent linkers.
- Poly(N-vinyl pyrrolidone) (PVP) was identified as the first material to suppress PDA film assembly.
- Successful coating of silica colloids was demonstrated.
Conclusions:
- PDA/PEG and PDA/PVA mixtures offer new routes for PDA coating without specific linkers.
- PVP's inhibitory effect provides new insights into PDA polymerization control.
- These findings enhance the understanding of PDA film properties and expand its coating potential.
