Chemistry Reference
In-Depth Information
Table 2.2
The characteristic band positions and assignments used in the characterization of
various graft products by FTIR
Wave number,
cm
1
Peak assignment
References
Original cellulose
3,570-3,460
Intramolecular OH bending
[
130
]
3,460
Intramolecular OH bending
[
131
]
3,418-3,250
Intermolecular OH bending
[
130
]
3,346
Intermolecular OH bending
[
131
]
3,400-2,750
-OH stretching
[
56
]
3,100-3,500
-OH vibration
[
105
]
3,400
-OH
[
8
,
50
,
57
]
3,471
-OH stretching
[
114
]
3,413
-OH stretching
[
132
]
1,640
H-O-H intermolecular stretching
[
105
]
1,645
OH bending
[
114
]
1,648-1,620
OH bending (absorbed water)
[
130
]
1,640
OH bending (absorbed water)
[
131
]
2,920-2,848
Symmetrical CH
2
stretching
[
130
]
2,908
Symmetrical CH
2
stretching
[
131
]
2,902
C-H stretching
[
96
]
2,854
-CH
2
-symmetric stretching
[
53
]
2,927
C-H stretching
[
114
]
2,901
C-H stretching
[
132
]
2,904-2,891
Stretching of the C-H bond in -CH
2
group
[
105
]
2,983
C-H stretching
[
50
]
2,903
C-H stretching
[
96
]
1,430-1,376
C-H deformation
[
96
]
1,384-1,360
C-H deformation
[
130
]
1,370
C-H deformation
[
131
]
1,740
C
¼
O stretching vibration
[
130
]
1,745
C
¼
O stretching vibration
[
131
]
1,750
C
¼
O stretching vibration
[
60
]
1,655
C
¼
O stretching vibration
[
56
]
1,745
C
¼
O stretching vibration
[
31
]
1,747
C
¼
O stretching vibration
[
35
]
1,750
C
¼
O stretching vibration
[
66
]
1,175-1,160
Assym. C-O-C bridge stretching
[
130
]
1,175
Assym. C-O-C bridge stretching
[
131
]
1,150
Assym. C-O-C stretching
[
109
]
1,165
C-O-C stretching
[
114
]
1,138-1,124
Assym. C-O-C bridge
[
130
]
1,130
Assym. C-O-C bridge
[
131
]
1,300-1,000
C-O stretching
[
132
]
1,221
C-O stretching
[
56
]
1,280 and 1,185 C-O stretching
[
35
]
1,375-1,030
C-O stretching
[
96
]
667-706
C
¼
C out-of-plane ring bending
[
132
]
1,653
Double bond stretching in alkenes
[
132
]
905-880
Assym. out-of-phase ring
[
130
]
