PAPER making! FROM THE PUBLISHERS OF PAPER TECHNOLOGY INTERNATIONAL ® FROM THE PUBLISHERS OF PAPER TE Volume 8, Number 3, 2022
Cellulose nanofibers/ polyvinyl alcohol blends as an efficient coating to
improve the hydrophobic and oleophobic properties of paper
SHANCONG HUANG 1 , XIYUN WANG 1 , YU ZHANG 2 , YU MENG 2 , FEIGUO HUA 2 & XINXING XIA 1 . The effect of cellulose nanofibers (CNFs)/polyvinyl alcohol (PVA) coating on the hydrophobic, oleophobic, and strength properties of paper were investigated. The results showed that the size of bamboo fibers (BFs) decreased significantly and the crystallinity increased significantly after biological enzyme treatment. The average length of CNFs obtained by high pressure homogenization ZDVȝPWKHGLDPHWHUZDVQP and the crystallinity was 63.63%. When the coating weight of PVA/CNF was 2.0 g/m 2 and the CNF dosage was increased from 0.0% to 3.0%, the paper grease resistance grade was increased from 7 to 9, the Cobb value was decreased from 22.68 ± 0.29 g/m 2 to 18.37 ± 0.63 g/m 2 , the contact angle was increased from 67.82° to 93.56°, and the longitudinal and transverse tensile index were increased from 67.72 ± 0.21 N m/g and 37.63 ± 0.25 N m/g to 68.61 ± 0.55 N m/g and 40.71 ± 0.78 N m/g, respectively. When the CNF dosage was 3.0% and the coating weight of PVA/CNF was 4.0 g/m 2 , the grease resistance grade of the paper was 12, the Cobb value was 21.80 ± 0.39 g/m 2 , and the longitudinal and transverse tensile indices were 72.11 ± 0.43 N m/g and 42.58 ± 0.48 N m/g, respectively. In summary, the increase of CNFs can effectively improve the lipophobicity, hydrophobicity and tensile strength of the PVA coated paper. Contact information: 1 College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou 310018, Zhejiang, China. 2 Zhejiang Jinchang Specialty Paper Co., Ltd., Quzhou 324404, Zhejiang, China.
Nature Scientific Reports (2022) 12:16148 https://doi.org/10.1038/s41598-022-20499-8 Creative Commons Attribution 4.0 International License
The Paper Industry Technical Association (PITA) is an independent organisation which operates for the general benefit of its members – both individual and corporate – dedicated to promoting and improving the technical and scientific knowledge of those working in the UK pulp and paper industry. Formed in 1960, it serves the Industry, both manufacturers and suppliers, by providing a forum for members to meet and network; it organises visits, conferences and training seminars that cover all aspects of papermaking science. It also publishes the prestigious journal Paper Technology International ® and the PITA Annual Review , both sent free to members, and a range of other technical publications which include conference proceedings and the acclaimed Essential Guide to Aqueous Coating .
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