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- Title
Macromolecular photoinitiators enhance the hydrophilicity and lubricity of natural rubber.
- Authors
Chin, Stacy L.; Xiao, Ruiqing; Cooper, Benjamin G.; Varongchayakul, Nitinun; Buch, Karen; Kim, Ducksoo; Grinstaff, Mark W.
- Abstract
ABSTRACT A mild and facile strategy to coat natural rubber (NR) with a hydrophilic coating is described that uses light and photoinitiator copolymers. Five high molecular weight photoinitiator copolymers, composed of hydrophilic (e.g., 2-hydroxyethyl acrylate [HEA], poly(ethylene glycol) [PEG], N-vinylpyrrolidone [NVP], N-isopropylacrylamide [NIDAM], and acrylic acid [AA]) and hydrophobic benzophenone (BP) units, are synthesized and evaluated for coating NR on UV irradiation. When the HEA/BP, NVP/BP, and AA/BP macromolecular photoinitiators attach to the NR surface, the latter becomes hydrophilic. The resulting hydrophilic coatings on NR sheets are analyzed via FT-IR spectroscopy, scanning electron microscopy, atomic force microscopy, contact angle measurements, and transwell cytotoxicity assays using NIH 3T3 fibroblast cells. The addition of high molecular weight hydrophilic polymers (e.g., polyvinylpyrrolidone and poly(2-methacryloyloxyethyl phosphorylcholine)) to the coating further enhances the coating's hydrophilicity and lubricity. The application of these non-cytotoxic, hydrophilic, and lubricious coatings on NR expands current applications and usage of NR. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43930.
- Subjects
RUBBER; HYDROPHILIC compounds; COPOLYMERS; ATOMIC force microscopy; POLYMERS
- Publication
Journal of Applied Polymer Science, 2016, Vol 133, Issue 37, pn/a
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.43930