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Study on the wet-web strength and pressability of paper sheet during the press process with the addition of nano-fibrillated cellulose (NFC)
- Lu, Zonghong, An, Xingye, Zhang, Hao, Guan, Min, Liu, Jing, Sun, Yiwei, Nie, Shuangxi, Cao, Haibing, Lu, Bin, Liu, Hongbin
- Carbohydrate polymers 2019 v.210 pp. 332-338
- absorption, cellulose, drainage, energy, paper
- The properties of wet-web strength and pressability of base paper affect the frequency of sheet breaks and machine runnability during the paper-making process. In this paper, the effect of nano-fibrillated cellulose (NFC) on the wet-web strength and pressability of paper sheet during the press process of paper-making was explored. It was found that the tensile energy absorption (TEA) of the sample was increased from 6.32 to 10.93 J/m2 at 50% wet web solid content when 5% NFC was added. The web solid content was decreased from 50.51% to 42.85% when 0%–5% NFC was added under the same drainage and press conditions, indicating that the addition of NFC during the paper-making process can retard the pressability of paper sheet. The study put forwards a new view to discuss/study the effect of added NFC on the wet-web strength and pressability of paper sheet.