5814
Cellulose (2021) 28:5807–5826
Table 2 Physical fiber properties. Shape refers to shape factor. The amount of fines is given as a percentage of non-fines material. The values given are weighted with respect to fiber length
Width ( l m)
Sample
Length (mm)
Shape (%)
Fines (%)
Kink index
CTMP
0 min R30
2.65
42.8
91.2
0.6
0.19
R100
1.65
41.1
91.8
0.8
0.36
R200
1.00
36.8
91.6
11.3
0.48
R400
0.50
38.7
90.8
212.2
0.52
Not fract
1.49
39.3
90.8
10.9
0.46
30 min R30
2.52
44.1
93.0
0.5
0.24
R100
1.48
40.9
92.9
1.5
0.26
R200
0.95
37.1
92.4
12.2
0.33
R400
0.57
32.3
91.8
211.1
0.39
Not fract
1.26
38.2
91.0
14.5
0.33
60 min R30
2.40
44.1
96.6
0.4
0.10
R100
1.34
40.8
92.9
1.0
0.19
R200
0.87
37.2
92.6
11.9
0.17
R400
0.66
33.9
92.1
171.6
0.24
Not fract
1.15
38.2
91.1
15.3
0.30
0 min R30
2.73
43.8
92.3
0.7
0.12
R100
1.65
41.5
92.1
0.9
0.30
R200
1.06
37.8
91.8
9.3
0.38
R400
0.64
32.8
91.3
184.3
0.59
Pass
0.58
31.7
92.3
601.0
1.29
Not fract
1.50
40.4
91.1
13.7
0.38
PCC-CTMP 30 min R30
2.63
45.3
93.1
0.3
0.08
R100
1.49
41.9
93.0
0.7
0.21
R200
0.94
37.8
92.6
10.0
0.31
R400
0.57
32.2
92.2
194.6
Pass
0.77
30.6
92.6
617.6
0.50
Not fract
1.27
40.6
91.9
16.8
0.30
60 min R30
2.50
45.5
92.4
0.4
0.08
R100
1.33
42.0
92.9
0.8
0.21
R200
0.87
38.1
92.7
10.0
0.27
R400
0.51
31.5
91.9
270.5
Pass
0.61
31.7
90.7
433.7
1.13
Not fract
1.12
40.3
92.2
17.0
0.25
123
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