ก G
#
>
J กK JRH
" ? O ?
" >? ?
F? ?F (FT-IR)
4
C 4 > ก8 7 qW
ก B
=
:
W
> ก8
M= = < 5 :=94 59=:@
(FT-IR) 9 ก B
4
C
4 > ก8 AB
ก 1 ก 4 :G
A
y
กo 4 7 ก A
B
E
= 9 < 7I
B
5
MK
8 8: 6 V I
ก9> M5 96 8 (KBr disk) :
=
E 4 MB
= 9 <
กE
3.4 ก " ? OO ?@
F W
X
J กK
ก =
= : y
49 H C 4 > ก8
M= = < 5 :=94 59=:@
(FT-IR) 8
ก I
กL Cก MK
9 E 5 ก H Davey and Loadman (1984) 9 ก 4 A
M 5 6 E W
E W
:
5
B
5
A
8: =
9= 5 : y
49 C 4 > ก8
= JK
FT-IR
>6 7 : ก; q6ก W
ก J
5 H W
> ก8
3.5 ก >
?"
B
C 4MK
ก <44 4-
9 <@
I
กL 5 64 =
ก 4 M ก ก 9
M= = Thermogravimetric analysis (TGA) ก M 5 6ก MB
D E46 ก ก 7
ก >K
H
DW
10
54 M 7 ก DW
7 qI
900
5
6 MI
กก : K
: H AB
กE
ก
>K
HA
H
DW
Z ก " ก !F Z ก >
ก J
J กK ! " #$
7 กก M ก ก <4 C 4 > ก8
> 9 <@
MK
: 4 o =J
0.5
1 ก
MK
4 o =J
0, 1, 2, 3, 4
5 K
9 B
4
C 4 > ก8 MK
V ก ก <48:M 5 6
= 9= 5
M= = FT-IR 8 V 4 MK
2
>GH
2
>JA
MK
E4ก <, Absorbance ratio 1511/835 cm
-1
870/835 cm
-1
H C 4 > ก8 ก <4
> 9 <@
0.5 ก :G
5 K
9
E
Area Peak
Absorbance Ratio
1511
870
835
1511/835
870/835
Pure ENR
0
103.416
97.103
0
1.06501
1 hour ENR (0.5 g)
0
113.95
105.605
0
1.07902
2 hour ENR (0.5 g)
0
121.595
115.63
0
1.05159
3 hour ENR (0.5 g)
3.480
38.854
38.567
0.09023
1.00744
4 hour ENR (0.5 g)
3.959
24.61
26.161
0.15133
0.94071
5 hour ENR (0.5 g)
14.110
69.95
80.56
0.17515
0.86830
1511
c=c stretching in aromatic ring
870
Epoxide asymmetric stretching
835
C-H wagging of isoprene unit
