Study on the wet-web strength and pressability of paper sheet during the press process with the addition of nano-fibrillated cellulose (NFC)

Zonghong Lu; Xingye An; Hao Zhang; Min Guan; Jing Liu; Yiwei Sun; Shuangxi Nie; Haibing Cao; Bin Lu; Hongbin Liu

doi:10.1016/j.carbpol.2019.01.083

Study on the wet-web strength and pressability of paper sheet during the press process with the addition of nano-fibrillated cellulose (NFC)

Carbohydr Polym. 2019 Apr 15:210:332-338. doi: 10.1016/j.carbpol.2019.01.083. Epub 2019 Jan 25.

Authors

Zonghong Lu¹, Xingye An², Hao Zhang¹, Min Guan¹, Jing Liu¹, Yiwei Sun¹, Shuangxi Nie³, Haibing Cao⁴, Bin Lu⁴, Hongbin Liu⁵

Affiliations

¹ Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, No. 29, 13th Street, TEDA, Tianjin 300457, PR China.
² Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, No. 29, 13th Street, TEDA, Tianjin 300457, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China. Electronic address: anxingye@tust.edu.cn.
³ Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China.
⁴ Zhejiang JingXing Paper Co., Ltd., Pinghu, Zhejiang Province, 314214, PR China.
⁵ Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, No. 29, 13th Street, TEDA, Tianjin 300457, PR China. Electronic address: hongbin@tust.edu.cn.

PMID: 30732769
DOI: 10.1016/j.carbpol.2019.01.083

Abstract

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.

Keywords: Drainage rate; Nano-fibrillated cellulose (NFC); Press process; Pressability; Wet-web strength.