8 Nanocomposites Based on Thermosetting Polyurethane Matrix. . .
143
6.00
5.00
4.00
3.00
2.00
1.00
0.00
a
Stress at Break (MPa)
P U
M
W
C
N
T - o x
( 0 . 0 1 %
)
M
W
C
N
T - o x
( 0 . 1 0 %
)
M
W
C
N
T - o x
( 0 . 2 5 %
)
M
W
C
N
T - r e d
( 0 . 0 1 %
)
M
W
C
N
T - r e d
( 0 . 1 0 %
)
M
W
C
N
T - r e d
( 0 . 2 5 %
)
M
W
C
N
T ~
h e m
i n
( 0 . 0 1 %
)
M
W
C
N
T ~
h e m
i n
( 0 . 1 0 %
)
M
W
C
N
T ~
h e m
i n
( 0 . 2 5 %
)
M
W
C
N
T ~
h e m
i n - r e d
( 0 . 0 1 %
)
M
W
C
N
T ~
h e m
i n - r e d
( 0 . 1 0 %
)
M
W
C
N
T ~
h e m
i n - r e d
( 0 . 2 5 %
)
30.00
25.00
20.00
15.00
10.00
5.00
0.00
b
Young’s Modulus (MPa)
P U
M
W
C
N
T - o x
( 0 . 0 1 %
)
M
W
C
N
T - o x
( 0 . 1 0 %
)
M
W
C
N
T - o x
( 0 . 2 5 %
)
M
W
C
N
T - r e d
( 0 . 0 1 %
)
M
W
C
N
T - r e d
( 0 . 1 0 %
)
M
W
C
N
T - r e d
( 0 . 2 5 %
)
M
W
C
N
T ~
h e m
i n
( 0 . 0 1 %
)
M
W
C
N
T ~
h e m
i n
( 0 . 1 0 %
)
M
W
C
N
T ~
h e m
i n
( 0 . 2 5 %
)
M
W
C
N
T ~
h e m
i n - r e d
( 0 . 0 1 %
)
M
W
C
N
T ~
h e m
i n - r e d
( 0 . 1 0 %
)
M
W
C
N
T ~
h e m
i n - r e d
( 0 . 2 5 %
)
Fig. 8.15 Comparative effects for (a) stress at break (MPa) and (b) Young’s modulus (MPa) of PU
nanocomposites containing MWCNT-ox, MWCNT-red, MWCNT-hemin and MWCNT-hemin-red
(0.01, 0.10 and 0.25%)