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International Journal of Polymer Science
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International Journal of Polymer Science
/
2016
/
Article
/
Tab 2
/
Research Article
Reaction Behavior of Cellulose in the Homogeneous Esterification of Bagasse Modified with Phthalic Anhydride in Ionic Liquid 1-Allyl-3-methylimidazium Chloride
Table 2
Primary NMR correlations in DMSO-
for cellulose modified with phthalic anhydride.
Glycosyl residue
&
chemical shifts (ppm)
1
2
3
4
5
6a
6b
Cellulose (internal)
1
H
4.31
3.05
3.36
3.30
3.16
3.56
3.77
13
C
103.26
73.56
75.24
80.97
77.18
60.74
60.74
Cellulose (NR)
1
H
4.23
2.98
3.15
3.05
3.16
3.39
3.69
13
C
103.65
73.77
77.07
70.54
77.18
61.50
61.50
Cellulose (
)
1
H
4.89
3.16
3.69
3.31
3.68
3.56
3.72
13
C
92.44
72.68
72.11
81.36
70.25
60.80
60.80
Cellulose (
)
1
H
5.14
2.93
3.25
3.31
3.06
3.56
3.72
13
C
103.31
74.93
75.24
81.36
75.13
60.80
60.80