| 43422 |
Creator |
c3baa1aae2495d9fcf383c433b46bfe0 |
| 43422 |
Creator |
ext-8fd76db522508a3167e59854f030785e |
| 43422 |
Creator |
ext-9e432aef03c2060b7fd48ee6aebcc4c7 |
| 43422 |
Creator |
ext-b0cc0464ffd0cfc92ce64a8b4db3caba |
| 43422 |
Creator |
ext-c25cedcae2bdf7836138b059e5a7cd59 |
| 43422 |
Creator |
ext-febea2b56e88883032df9613191bc40c |
| 43422 |
Date |
2010-01-04 |
| 43422 |
Is Part Of |
repository |
| 43422 |
abstract |
Active screen plasma nitriding (ASPN) is used to chemically modify the surface of
UHMWPE. This is an unexplored and new area of research. ASPN allows the homogeneous
treatment of any shape or surface at low temperature; therefore, it was thought that
ASPN would be an effective technique to modify organic polymer surfaces. ASPN experiments
were carried out at 120 °C using a dc plasma nitriding unit with a 25% N(2) and 75%
H(2) atmosphere at 2.5 mbar of pressure. UHMWPE samples treated for different time
periods were characterized by nanoindentation, FTIR, XPS, interferometry and SEM.
A 3T3 fibroblast cell line was used for in vitro cell culture experiments. Nanoindentation
of UHMWPE showed that hardness and elastic modulus increased with ASPN treatment compared
to the untreated material. FTIR spectra did not show significant differences between
the untreated and treated samples; however, some changes were observed at 30 min of
treatment in the range of 1500-1700 cm(-1) associated mainly with the presence of
N-H groups. XPS studies showed that nitrogen was present on the surface and its amount
increased with treatment time. Interferometry showed that no significant changes were
observed on the surfaces after the treatment. Finally, cell culture experiments and
SEM showed that fibroblasts attached and proliferated to a greater extent on the plasma-treated
surfaces leading to the conclusion that ASPN surface treatment can potentially significantly
improve the biocompatibility behaviour of polymeric materials |
| 43422 |
authorList |
authors |
| 43422 |
presentedAt |
ext-3bc08c59c85e4673cc93598d51a72f75 |
| 43422 |
status |
nonPeerReviewed |
| 43422 |
type |
AcademicArticle |
| 43422 |
type |
Article |
| 43422 |
label |
Kaklamani, Georgia; Mehrban, Nazia; Bowen, James ; Grover, Liam M.; Dong, Hanshan
and Stamboulis, Artemis (2010). Effect of active screen plasma nitriding on the biocompatibility
of UHMWPE surfaces. In: 2nd International Symposium on Surface and Interface of
Biomaterials, 4-6 Jan 2010, Hong Kong. |
| 43422 |
label |
Kaklamani, Georgia; Mehrban, Nazia; Bowen, James ; Grover, Liam M.; Dong, Hanshan
and Stamboulis, Artemis (2010). Effect of active screen plasma nitriding on the biocompatibility
of UHMWPE surfaces. In: 2nd International Symposium on Surface and Interface of
Biomaterials, 4-6 Jan 2010, Hong Kong. |
| 43422 |
Title |
Effect of active screen plasma nitriding on the biocompatibility of UHMWPE surfaces |
| 43422 |
in dataset |
oro |