Scanning force microscopy investigation of poly(ethylene terephthalate) modified by argon plasma treatment

1998 ◽  
Vol 8 (8) ◽  
pp. 1735-1742 ◽  
Author(s):  
Ben D. Beake ◽  
John S. G. Ling ◽  
Graham J. Leggett
Keyword(s):  
Plasma Treatment ◽  
Ethylene Terephthalate ◽  
Argon Plasma ◽  
Scanning Force Microscopy ◽  
Force Microscopy ◽  
Poly Ethylene Terephthalate ◽  
Microscopy Investigation ◽  
Scanning Force ◽  
Poly Ethylene

scholarly journals Plasma Treatment of Poly(ethylene terephthalate) Films and Chitosan Deposition: DC- vs. AC-Discharge

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 508
Author(s):  
Tatiana S. Demina ◽  
Mikhail S. Piskarev ◽  
Olga A. Romanova ◽  
Andrey K. Gatin ◽  
Boris R. Senatulin ◽  
...  
Keyword(s):  
Plasma Treatment ◽  
Photoelectron Spectroscopy ◽  
Ethylene Terephthalate ◽  
Biomedical Application ◽  
Control Surface ◽  
Force Microscopy ◽  
Angle Measurements ◽  
Atomic Force ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

Plasma treatment is one of the most promising tools to control surface properties of materials tailored for biomedical application. Among a variety of processing conditions, such as the nature of the working gas and time of treatment, discharge type is rarely studied, because it is mainly fixed by equipment used. This study aimed to investigate the effect of discharge type (direct vs. alternated current) using air as the working gas on plasma treatment of poly(ethylene terephthalate) films, in terms of their surface chemical structure, morphology and properties using X-ray photoelectron spectroscopy, scanning electron microscopy, atomic force microscopy and contact angle measurements. The effect of the observed changes in terms of subsequent chitosan immobilization on plasma-treated films was also evaluated. The ability of native, plasma-treated and chitosan-coated films to support adhesion and growth of mesenchymal stem cells was studied to determine the practicability of this approach for the biomedical application of poly(ethylene terephthalate) films.

Surface Characterization and In Vitro Blood Compatibility of Poly(Ethylene Terephthalate) Immobilized with Hirudin

2005 ◽  
Vol 288-289 ◽  
pp. 421-424
Author(s):  
F. Li ◽  
Jin Wang ◽  
H. Sun ◽  
Nan Huang
Keyword(s):  
Free Energy ◽  
Photoelectron Spectroscopy ◽  
Surface Characterization ◽  
Ethylene Terephthalate ◽  
Blood Compatibility ◽  
Argon Plasma ◽  
Angle Measurement ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

Poly(ethylene terephthalate) films were exposed under argon plasma glow discharge and induced polymerization of acrylic acid (AA) in order to introduce carboxylic acid group onto PET (PET-AA) assisting by ultroviolet radiation. Hirudin-immobilized PETs were prepared by the grafting of PET-AA, followed by chemical reaction with hirudin. The surface structure of the treated PET is determined by X-ray photoelectron spectroscopy (XPS). The wettability and surface free energy, interface free energy of the films is investigated by contact angle measurement. Platelet adhesion evaluatiion is conducted to examine the blood compatibility in vitro. Scanning electron microscopy (SEM) and optical microscopy reveal that the amounts of adhered, aggregated and morphologically changed platelets are reduced on hirudin-immobilized PET films.

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