Influence of oxygen plasma modification on surface free energy of PMMA films and cell attachment

Date

2007-10-04

Author

Ozcan, Canturk
Zorlutuna, Pinar
Hasırcı, Vasıf Nejat
Hasırcı, Nesrin

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

240
views

0
downloads

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 technique is the application of glow discharge plasma which employs no solvents, takes place at ambient temperatures, and alterations take place only at the surface by changing the surface chemistry along with surface free energy (SFE) and efficiency for cell-material interaction. In this study, poly(methyl methacrylate) (PMMA) film surfaces were modified with oxygen plasma. SFE and its dispersive and polar (acidic-basic) components of the modified surfaces were calculated by means of several theoretical approaches including geometric mean, harmonic mean and acid-base equations. The relation between SFE and its dispersive and polar components and cell attachment on surfaces were studied. The highest 3T3 cell attachment was obtained for the surface with the total SFE of 61.77 mJ/m(2) and polar component of 50.91 mJ/m(2) according to Geometric mean. The total SFE of this surface was calculated to be 61.06 mJ/m(2) and the polar component as 40.96 mJ/m(2) using the Harmonic mean method.

Subject Keywords

Contact angle, Modification, PMMA, Surface free energy, Surfaces

URI

https://hdl.handle.net/11511/32382

DOI

https://doi.org/10.1002/masy.200850916

Collections

Graduate School of Natural and Applied Sciences, Conference / Seminar

Suggestions

OpenMETU
Core

Effect of impact modifier on the properties of poly (ethylene terephthalate)-organoclay nanocomposites Yılmazer, Ülkü; Alyamac, Elif (2006-11-30) The effects of component concentrations and addition order of the components, on the final properties of ternary nanocomposites composed of amorphous poly (ethylene terephthalate) matrix, organically modified clay, and an ethylene / methyl acrylate / glycidyl methacrylate (E-MAGMA) terpolymer were studied. All formulations were prepared by melt compounding of the components with a two-step mixing procedure in a corotating twin-screw extruder. Considering the X-Ray Diffraction, SEM, impact and strain at brea...
Effects of array guided surface waves on radiation characteristics of a finite planar printed dipole array Aydın Çivi, Hatice Özlem; Pathak, PH (2004-06-26) The presence of surface waves different from the conventional grounded dielectric substrate surface wave modes, which can be excited on a finite periodic radiating array of printed dipoles, at frequencies for which the spacing between dipoles is typically less than half a wavelength is studied. The effects of such array guided surface waves on the array radiation characteristics are investigated. Techniques to suppress these surface waves are also discussed.
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...
Influence of nanoparticle shape on colloidal plasmonic interface properties Sarıgül, Elif; Bek, Alpan; Department of Physics (2014) Nanoparticles bearing free charges, interact very strongly with incoming electromagnetic radiation at certain frequencies called the plasmon resonance frequencies, depending on the size, shape and material properties of the particle and the medium. In order to enhance the light scattering by a two dimensional network of such plasmonic nanoparticles several strategies can be followed. In this thesis, it was pursued the fabrication and characterization of the nanoparticle decorated surfaces by colloidal solut...
Effect of pH in an aqueous medium on the surface area, pore size distribution, density, and porosity of montmorillonite Altin, O; Özbelge, Hilmi Önder; Dogu, T (Elsevier BV, 1999-09-01) Surface area, pore volume distribution, and porosity of montmorillonite are determined after being exposed to aqueous solutions with various pH values. For measurement, after each pH treatment the clay samples were freeze-dried in order to keep the structure of the clay same as that in the aqueous solution. Surface area and pore size distribution measurements were performed on an unmodified and four pH (2.5, 4.0, 5.5, 9.0)-adjusted clay samples using N-2 and CO2 as adsorbates. The surface area measurements ...

Citation Formats

C. Ozcan, P. Zorlutuna, V. N. Hasırcı, and N. Hasırcı, “Influence of oxygen plasma modification on surface free energy of PMMA films and cell attachment,” 2007, vol. 269, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32382.