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Biopolymer brushes grown on PDMS contact lenses by in situ atmospheric plasma-induced polymerization

Journal of Polymer Research volume 24, Article number: 69 (2017) Cite this article

Abstract

It is critical for silicone based-contact lens development by improving surface characterization to prevent protein adsorption. In this paper, the silicone (polydimethylsiloxane, PDMS) contact lenses were modified by varied molecular weights of poly(ethylene glycol) methacrylate (PEGMA, Mw 360 and 500 Da) polymer brushes by in situ atmospheric plasma-induced surface copolymerization. After PDMS contact lenses were homogenously immersed in PEGMA monomer solutions, varied gases (oxygen, nitrogen, and argon) with the atmospheric plasma were employed in the process of polymerization. The characterizations of PEGMA polymer brushes modified on the PDMS contact lenses would be evaluated by atomic force microscopy, FT-IR spectroscopy, X-ray photoelectron spectroscopy, and contact angle test. The results show that the hydrophilicity of the PEGMA polymer brush-modified surface is obviously improved. The contact angle of PEGMA-modified surface decreases about 20°–40° by varied atmospheric plasma (O2, N2, and Ar gases), compared to the pristine lenses. Importantly, the hydrophilicity of the PEGMA polymer brush-modified surface could be retained beyond 2 weeks. PEGMA-modified PDMS contact lenses also display superior anti-protein (fibrinogen and human serum bovine) adsorption ability. Therefore, immobilization of PEGMA polymer brushes by in situ atmospheric plasma-induced polymerization would be a great and rapid method to enhance the hydrophilicity and anti-protein adsorption ability in the PDMS contact lenses.

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Acknowledgments

This work was financially supported by the Ministry of Science and Technology of Taiwan (MOST 105-2221-E-131-026, and MOST 105-2622-E-131-001-CC2), and the Ministry of Education (104B-38-021).

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Authors and Affiliations

  1. Department of Materials Engineering, Ming Chi University of Technology, New Taipei City, 24301, Taiwan

    Jung-San Chen, Ting-Yu Liu, Hui-Ming Tsou, Yi-Shao Ting, Yi-Qun Tseng & Chih-Hao Wang

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  1. Jung-San Chen
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  2. Ting-Yu Liu
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  3. Hui-Ming Tsou
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  4. Yi-Shao Ting
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  6. Chih-Hao Wang
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Correspondence to Ting-Yu Liu.

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Chen, JS., Liu, TY., Tsou, HM. et al. Biopolymer brushes grown on PDMS contact lenses by in situ atmospheric plasma-induced polymerization. J Polym Res 24, 69 (2017). https://doi.org/10.1007/s10965-017-1230-7

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  • DOI: https://doi.org/10.1007/s10965-017-1230-7

Keywords

  • Silicone contact lenses
  • Poly(ethylene glycol) methacrylate
  • In situ atmospheric plasma polymerization
  • Anti-protein adsorption