Effect of calcium–ozone treatment on chemical and biological properties of polyethylene terephthalate. Issue 4 (18th August 2014)

• Record Type: Journal Article
• Authors: Rashid, Ahmed Nafis; Tsuru, Kanji; Ishikawa, Kunio
• Is Part Of: Journal of biomedical materials research. Volume 103:Issue 4(2015:May)
• Page Start: 853
• Page End: 860
• Publication Date: 2014-08-18
• Subjects: poly(ethylene terephthalate) -- ozone treatment -- calcium modification -- biocompatibility; Biomedical materials -- Periodicals; 610.28
• DOI: 10.1002/jbm.b.33260
• Languages: English
• ISSNs: 1552-4973

Abstract

Abstract: Ozone (O3 ) treatment of polyethylene terephthalate (PET) in distilled water was performed in the presence and absence of calcium (Ca 2+ ). PET was oxidized and thus carboxylic and hydroxyl functional groups were introduced on its surface after O3 treatment, regardless of the presence or absence of Ca 2+ . In the case of O3 treatment with Ca 2+, PET surface was modified with Ca 2+ . Ca 2+ immobilization was confirmed by X‐ray photoelectron spectrometric analysis. Hydrophilicity was investigated by measuring contact angles (CA). CA of PET decreased significantly after ozonation. Surface topography of PET before and after ozone treatment was observed by scanning electron microscopy, and showed no morphological changes. In vitro studies showed enhanced rat bone marrow cell responses on the O3 ‐treated PET surface. Ca 2+ –O3 oxidation at 37°C for 6 h is expected to be an effective method to fabricate PET with good biocompatibility. © 2014 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 103B: 853–860, 2015.