Biomedical Engineering Reference
In-Depth Information
A
B
FIGURE 18.1
SEM.micrographs.of.native.
E. coli
.cells.(A).and.cells.treated.with.50.µg.cm
-3
.of.silver.nanoparticles.in.liquid.Lb.
medium.for.4.h..(B).(Reproduced.with.permission.from.Sondi,.I.,.and.Salopek-Sondi,.B.,.
J. Colloid Interface Sci.,
.
275,.177,.2004..Copyright.Elsevier.)
PVP,.and.(C).Ag-NPs.solution.stabilized.with.SDS.against.
S. aureus
.(KCTC.1928).(a).and.
E.
coli
.(KCTC.1041).(b)..All.concentrations.of.Pt-NPs.and.Ag-NPs.were.10.µl.(5.4.ppm).
Son.and.co-workers
10
.reported.on.their.experiments.on.an.antimicrobial.cellulose.ace-
tate. nanoiber. containing. Ag-NPs. using. UV. irradiation. at. 245. nm. of. the. polymer. nano-
ibers. electrospun. with. small. amounts. of. silver. nitrate.. The. Ag-NPs. generated. on. the.
surface.of.cellulose.acetate.with.an.average.size.of.21.nm.exhibited.strong.antimicrobial.
activity.against.Gram-positive.
S. aureus
and.Gram-negative.
E. coli, K. pneumoniae,
and
P.
aeruginosa.
Alternatively,.antimicrobial.Ag-NPs.were.immobilized.on.nylon.and.silk.ibers.by.fol-
lowing. the. layer-by-layer. deposition. method. by. Dubas. and. co-workers.
11
. The. deposi-
tion. of. 20. layers. of. polydiallydimethylammonium. chloride. and. Ag-NPs. capped. with.
polymethacrylic.acid.onto.the.ibers.resulted.in.80%.
S. aureus
reduction.for.the.silk.iber.
and. 50%. for. the. nylon. iber.. Hydrogel-silver. nanocomposites. synthesized. from. Ag-NPs.
within.swollen.polyacrylamide-co-acrylic.acid.hydrogel.demonstrated.excellent.antibacte-
rial.effects.on.
E. coli
,.as.reported.by.Thomas.et.al.
12
.The.bacterial.action.depended.on.the.
