Paper Title:
Surface Charge of Bioactive Polyethylene Modified with –SO3H Groups and Its Apatite Inducing Capability in Simulated Body Fluid
  Abstract

A bioactive polyethylene polymer substrate can be produced by incorporation of sulfonic functional groups (-SO3H ) on its surface. Variation of the surface potential of the polyethylene modified with -SO3H groups with soaking in SBF were investigated using a laser electrophoresis zeta-potential analyzer. To complement the study using the laser electrophoresis, the surface was examined by X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy with an attached energy dispersive electron probe X-ray analyser (FE-SEM/EDS). It was found that the surface potential of the polyethylene was highly negative charged after soaking in SBF for 0.5 h, increased for higher soaking times (up to 48 h), and then decreased. The negative charge of the polymer at soaking time of 0.5 h is attributed to the presence of –SO3H groups on the surface. The initial increase in the surface potential was attributed to the incorporation of positively charged calcium ions to form a calcium sulphate, and then the subsequent decrease was assigned to the incorporation of negatively charged phosphate ions to form an amorphous calcium phosphate, which eventually transformed into apatite.

  Info
Periodical
Key Engineering Materials (Volumes 284-286)
Main Theme
Edited by
Panjian Li, Kai Zhang and Clifford W. Colwell, Jr.
Pages
453-456
DOI
10.4028/www.scientific.net/KEM.284-286.453
Citation
I. B. Leonor, H. M. Kim, F. Balas, M. Kawashita, R. L. Reis, T. Nakamura, "Surface Charge of Bioactive Polyethylene Modified with –SO3H Groups and Its Apatite Inducing Capability in Simulated Body Fluid ", Key Engineering Materials, Vols. 284-286, pp. 453-456, 2005
Online since
April 2005
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Hyun Min Kim, Hideki Kaneko, Tadashi Kokubo, Toshiki Miyazaki, Takashi Nakamura
11
Authors: Teruyuki Himeno, Hyun Min Kim, Hideki Kaneko, Masakazu Kawashita, Tadashi Kokubo, Takashi Nakamura
457
Authors: Isabel B. Leonor, Francisco Balas, Masakazu Kawashita, Rui L. Reis, Tadashi Kokubo, Takashi Nakamura
Abstract:Bioactive polymeric microspheres can be produced by pre-coating them with a calcium silicate solution and the subsequent soaking in a...
279
Authors: Isabel B. Leonor, Hyun Min Kim, Francisco Balas, Masakazu Kawashita, Rui L. Reis, Tadashi Kokubo, Takashi Nakamura
Abstract:Sulfonic groups (-SO3H) were covalently attached on different polymeric surfaces enabling them to induce apatite nucleation, for developing...
966
Authors: El-Sayed Ghaith, Toshihiro Kasuga, Masayuki Nogami
Abstract:Amorphous calcium silicate coating on a metallic titanium substrate for hard tissue replacement was prepared by a sol-gel method. Calcium...
235