Fiber
T
1
ρ
H (ms)
109
C-O-C
92
C-O-C
78
CH-O
75
CH-O
68 δ (ppm)
CH
2
-O
Short
Long
4.0
5.5
3.6
5.0
5.0
4.0
3.0
4.0
4.5
4.0