Improving Hydrophilicity and Adhesion of PDMS through Dopamine Modification Assisted by Carbon Dioxide Plasma
Source abstract
Abstract
In this paper, the carbon dioxide (CO2) plasma-assisted method was firstly developed for the preparation of dopamine coating polydimethylsiloxane (PDMS). The PDMS films were pre-treated by CO2 plasma at the power of 30–60 W for 5–10 min and then modified by dopamine for 18 h. The results showed that many polar groups such as C-O bonds, C=O bonds, and O-C=O bonds were introduced into the surface of PDMS films, which successfully promoted the formation of poly(dopamine) coating. Finally, the results of contact angle measurements showed that the surface of the plasma-assisted dopamine grafted samples changed from 118° to 64°. The shearing adhesion strength increased from 2.22 N/cm2 to 6.02 N/cm2, almost three times that of the original sample. This method provides a successful strategy for obtaining good poly(dopamine) coating layers on PDMS with strong hydrophilicity and shearing adhesion, which can be widely applied in the fields of medical and adhesive materials.
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Research context
OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Surface Modification and Superhydrophobicity · Diamond and Carbon-based Materials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Mechanical Engineering, Jiangsu University Technology, Changzhou 213000, China
Jiangsu Provincial Key Laboratory of Bionic Functional Materials, College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Funding
National Nature Science Foundation of China (NSFC) · Technology Project of Changzhou
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