Plasma modification of PMMA films: surface free energy and cell-attachment studies

Ozcan, Canturk
Hasırcı, Nesrin
The surface of a material is the most important part determining the acceptance by and compatibility with the environment. In many cases, although the bulk properties are excellent for a specific application, the surface may require to be modified and engineered in the desired direction. This is especially important for materials used in biological media, since the surface charge, hydophilicity and wettability are important for thrombosis formation, cell attachment or cell proliferation. In this study, poly(methyl methacrylate) films were prepared by solvent casting and their surfaces were modified by oxygen plasma treatment by applying powers of 20, 100 and 300 W. The effects of surface chemistry alterations on hydophilicity, work of adhesion, surface free energy and cell adhesion were examined. Cell attachment and proliferation are especially important for the materials used for tissue-engineering purposes. The results demonstrated that there is an optimum value for hydrophilicity and surface free energy which enhance cell attachment.


Influence of oxygen plasma modification on surface free energy of PMMA films and cell attachment
Ozcan, Canturk; Zorlutuna, Pinar; Hasırcı, Vasıf Nejat; Hasırcı, Nesrin (2007-10-04)
For any biomaterial placed into a biological medium, the surface properties of the material, such as porosity, crystallinity, presence and distribution of electrical charge and functional groups are very critical parameters that determine the acceptance or rejection of the material. Applications, especially tissue engineering require some surface modifications at the molecular level without disturbing the bulk properties of the implants in order to enhance the cell attachment on the material. An appropriate...
Plasma surface modification and characterization of pmma films
Özgen, Özge; Hasırcı, Nesrin; Hasırcı, Vasıf Nejat; Department of Polymer Science and Technology (2011)
Surface properties play an essential role for determining the behavior of a material for many applications such as coating, printing, adhesion and prosthesis implanting since the surface is the first part that comes in contact with the environment. Although the bulk properties of some materials are at the desired level, the surface may need to be modified for a better compatibility with its surrounding. Plasma treatment is one generally preferred technique because of its high potential to create various fun...
Synthesis and characterization of surface sulfonated polypropylene films
Ecevit, Safiye Tuba; Aras, Leyla; Department of Polymer Science and Technology (2004)
The basic reseach on the surface sulfonation of the polypropylene is very important due to the surface design for higher functionalization. For this purpose, liquid-phase sulfonation of the polypropylene surfaces at various temperatures for different time periods were performed by concentrated sulphuric acid. The physical and chemical changes formed by the effect of the sulfonation on the polypropylene surfaces were determined by contact angle measurement, mechanical analysis, UV-Vis spectrometer, different...
Zolfaghari Borra, Mona; Bek, Alpan; Ünalan, Hüsnü Emrah; Department of Micro and Nanotechnology (2021-7-29)
The integration of photonic components with electrical elements on the same silicon chip may lead to the development of new technologies. One limitation is the space available on the wafer surface, which is restricted. Currently, conventional fabrication techniques produce devices only on the top thin layer of the wafer surface. As a result, new architectural designs are required. Producing functional components deep inside Si without creating damage to the surfaces is a potential technique for overcoming t...
Evaluation of surface free energy for PMMA films
Ozcan, Canturk; Hasırcı, Nesrin (2008-04-05)
Surface free energy (SFE) is a property resulted from the chemical structure and the orientation of the molecules at the surface boundary of the materials. For solids, it can be calculated from the contact angles of liquid drops with known surface tension, formed on the solid surface. There are various SFE evaluation methods based on different theoretical assumptions. In this study, SFE and the dispersive, polar, acidic and basic components of the SFE of a polymeric material, poly(methyl methacrylate) (PMMA...
Citation Formats
C. Ozcan and N. Hasırcı, “Plasma modification of PMMA films: surface free energy and cell-attachment studies,” JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION, pp. 759–773, 2007, Accessed: 00, 2020. [Online]. Available: