Biomedical Engineering Reference
In-Depth Information
pan2 3.0 kV 11.9 mm
×
15.0 k SE(U) 2/21/02
3.00 um
FIGURE 4.21
Raw nano-PAN fibers (close-up).
nan9-pan01 1.0 kV 10.7 mm
×
110 SE(M) 5/31/02
500 um
FIGURE 4.22
Activated nano-PAN at a low-pH condition (1
N
HCl).
We explored higher temperature processes for the nano-PAN fibers. In figures
4.24 and 4.25, activated nano-PAN fibers at a high pH condition (1
NaOH) were
shown. The solvated and deformed nano-PAN fibers can be clearly seen.
N
4.3.4
E
D
C
FFECTS
OF
IFFERENT
ATIONS
Li+, Na+, and K+ on the contraction/elongation behavior of activated
PAN fiber was also studied during this period. PAN fibers were tested in alkaline
The effect of
