Biomedical Engineering Reference
In-Depth Information
PLLA
PLLA/HA
PLLA/MWNTs/HA
TCPs
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
1
3
5
7
Day
PLLA
PLLA/HA
PLLA/MWNTs/HA
TCPs
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
1
3
5
7
Day
FIGURE 18.6
Effect of nanofibrous membranes with different compositions on the adhesion and proliferation of periodontal
ligament cells (PDLCs, top) and gingival epithelial cells (GECs, bottom) determined by MTT assay. Standard
deviations are shown as bars.
Reproduced with permission from Ref.
[34]
.
for HA. Equal bioactivity was obtained for CNF/HA composites and HA by being evaluated by
immersion tests in simulated body fluid (SBF). Chen et al.
[52]
introduced MWCNTs into HA coat-
ings using laser surface alloying. Scratching test results indicated that the as-alloyed HA composite
coatings exhibited improved wear resistance and lower friction coefficient by increasing the amount
of CNTs
in
the
precursor material
powders
(
Figure
18.7
). These
composites
have
