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  1. Journal of Materials Science: Materials in Medicine
  2. Journal of Materials Science: Materials in Medicine : Volume 14
  3. Journal of Materials Science: Materials in Medicine : Volume 14, Issue 6, June 2003
  4. Calcium phosphate nucleation on surface-modified PTFE membranes
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Journal of Materials Science: Materials in Medicine : Volume 28
Journal of Materials Science: Materials in Medicine : Volume 27
Journal of Materials Science: Materials in Medicine : Volume 26
Journal of Materials Science: Materials in Medicine : Volume 25
Journal of Materials Science: Materials in Medicine : Volume 24
Journal of Materials Science: Materials in Medicine : Volume 23
Journal of Materials Science: Materials in Medicine : Volume 22
Journal of Materials Science: Materials in Medicine : Volume 21
Journal of Materials Science: Materials in Medicine : Volume 20
Journal of Materials Science: Materials in Medicine : Volume 19
Journal of Materials Science: Materials in Medicine : Volume 18
Journal of Materials Science: Materials in Medicine : Volume 17
Journal of Materials Science: Materials in Medicine : Volume 16
Journal of Materials Science: Materials in Medicine : Volume 15
Journal of Materials Science: Materials in Medicine : Volume 14
Journal of Materials Science: Materials in Medicine : Volume 14, Issue 12, December 2003
Journal of Materials Science: Materials in Medicine : Volume 14, Issue 11, November 2003
Journal of Materials Science: Materials in Medicine : Volume 14, Issue 10, October 2003
Journal of Materials Science: Materials in Medicine : Volume 14, Issue 9, September 2003
Journal of Materials Science: Materials in Medicine : Volume 14, Issue 8, August 2003
Journal of Materials Science: Materials in Medicine : Volume 14, Issue 7, July 2003
Journal of Materials Science: Materials in Medicine : Volume 14, Issue 6, June 2003
Coupling of HDPE/hydroxyapatite composites by silane-based methodologies
Apatite-forming ability of glass-ceramic apatite–wollastonite – polyethylene composites: effect of filler content
The effect of resin/crosslinker ratio on the mechanical properties and fungal deterioration of a maxillofacial silicone elastomer
Calcium phosphate nucleation on surface-modified PTFE membranes
In vitro cellular response to titanium electrochemically coated with hydroxyapatite compared to titanium with three different levels of surface roughness
Effect of annealing titanium on in vitro bioactivity
Biological and biochemical properties of the carbon composite and polyethylene implant materials
Biological behavior of sol-gel coated dental implants
Strength of bond to bone and cytotoxicity of sintered bodies of hydroxyapatite/zirconia composite particles
On the surface elemental composition of non-corroded and corroded dental ceramic materials in vitro
Journal of Materials Science: Materials in Medicine : Volume 14, Issue 5, May 2003
Journal of Materials Science: Materials in Medicine : Volume 14, Issue 4, April 2003
Journal of Materials Science: Materials in Medicine : Volume 14, Issue 3, March 2003
Journal of Materials Science: Materials in Medicine : Volume 14, Issue 2, February 2003
Journal of Materials Science: Materials in Medicine : Volume 14, Issue 1, January 2003
Journal of Materials Science: Materials in Medicine : Volume 13
Journal of Materials Science: Materials in Medicine : Volume 12
Journal of Materials Science: Materials in Medicine : Volume 11
Journal of Materials Science: Materials in Medicine : Volume 10
Journal of Materials Science: Materials in Medicine : Volume 9
Journal of Materials Science: Materials in Medicine : Volume 8

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Calcium phosphate nucleation on surface-modified PTFE membranes

Content Provider Springer Nature Link
Author GrØndahl, Lisbeth Cardona, Francisco Chiem, Khang Wentrup Byrne, Edeline Bostrom, Thor
Copyright Year 2003
Abstract Highly porous PTFE membranes are currently being used in facial reconstructive surgery. The present study aims at improving this biomaterial through creating a more bioactive surface by introducing ionic groups onto the surface. The unmodified PTFE membrane does not induce inorganic growth after immersion in simulated body fluid (SBF) for up to 4 weeks. Copolymeric grafting with acrylic acid (AAc) by means of gamma irradiation and subsequent in vitro testing in SBF reveals that this copolymer initially acts as an ion-exchange material and subsequently induces growth of a calcium phosphate phase (Ca/P=2.7) when large amounts (15%) of pAAc are introduced onto the membrane surface. This copolymer is not expected to function well from a biomaterials perspective since SEM showed the pores on the surface to be partly blocked. In contrast, the surface of monoacryloxyethyl phosphate (MAEP)-modified samples is altered at a molecular level only. Yet the modified materials are able to induce calcium phosphate nucleation when the external surface coverage is 44% or above. The initial inorganic growth on these membranes in SBF has a (Ca+Mg)/P ratio of 1.1 (presumably Brushite or Monetite). The secondary growth, possibly calcium-deficient apatite or tricalcium phosphate, has a (Ca+Mg)/P ratio of 1.5. This result is a promising indicator of a bioactive biomaterial.
Starting Page 503
Ending Page 510
Page Count 8
File Format PDF
ISSN 09574530
Journal Journal of Materials Science: Materials in Medicine
Volume Number 14
Issue Number 6
e-ISSN 15734838
Language English
Publisher Kluwer Academic Publishers
Publisher Date 2003-01-01
Publisher Place Dordrecht
Access Restriction Subscribed
Subject Keyword Biotechnology Polymer Sciences Characterization and Evaluation Materials
Content Type Text
Resource Type Article
Subject Biomaterials Biophysics Bioengineering Biomedical Engineering
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