www.nature.com/scientificreports/
Figure 2. Water contact angle of a single pulp fiber.
R0
R1
R3
50
40
30
20
10
0
0 2 4 6 8 10 Time (sec)
Figure 3. Effect of recycling on water contact angle of SBKP fibers with time variations.
R0
R1
R3
50
40
30
20
10
0
0 2 4 6 8 10 Time (sec)
Figure 4. Effect of recycling on water contact angle of SUKP fibers with time variations.
had an effect. It is presumed that the surface of the pulp fiber after the recycling treatment was roughened by the subsequent beating treatment, the chemical composition of the fiber surface was changed, the hydrophilic surface was exposed, and as a result, the wettability was improved. The contact angle of water on the fiber surface before and after recycling (R0 and R1) has been stabilized at 4 s after the contact of water with the SBKP fiber. However, the water contact angle for the fibers after the three recycling treatments (R3) was lower after 4 s of contact compared to the fibers after the first recycling treatment
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(2022) 12:1560 |
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