TABLE 2.

Integrated Results of Solid-State ¹³C NMR Spectra and Crystallinity Index

Sample a	Distribution of C chemical shift, ppm (%)b								Aliphatic C, %	Aromatic C, %	Polar C, %	Crystal index c
	0–50	50–61	61–96	96–109	109–145	145–163	163–190	190–220
BRT	16.5	3.46	63.5	7.48	6.53	1.19	1.34	0.00	90.9	7.72	77.0	0.292
DWF	5.21	2.95	59.2	11.1	7.79	6.44	5.83	1.53	78.4	14.2	87.0	0.332
DWPS1	4.83	6.16	59.5	10.6	3.22	9.75	5.91	0.00	81.1	13.0	91.9	0.235
DWPS2	1.36	5.54	60.5	10.9	3.05	9.25	7.17	2.18	78.4	12.3	95.6	0.127
DWCS	0.25	10.43	65.1	12.6	2.16	1.21	0.90	7.28	88.4	3.37	97.6	0.255
Suberan	1.18	6.08	39.6	12.2	22.9	10.2	0.97	6.83	59.1	33.1	75.9	0.447
DWSF	3.29	9.58	44.0	12.1	15.72	9.34	1.23	4.71	69.0	25.1	81.0	0.427
DSF	11.69	15.6	26.8	16.1	5.98	15.1	7.11	1.57	70.3	21.1	82.4	0.418
Wax	66.59	4.45	15.8	0.13	1.67	0.78	4.02	6.54	87.0	2.45	31.8	--

^aThe meaning of each root fraction is indicated in Figure 1.

^bAliphatic C: total aliphatic carbon region (0–109 ppm). Aromatic C: total aromatic carbon region (109–163 ppm). Polar C: total polar C region (50–109 ppm and 145–220 ppm).

^cCrystallinity index=(86–92ppm)/[(86–92ppm)+(79–86ppm)]=Crystalline cellulose/(amorphous cellulose+crystalline cellulose).