Reducing formation time while improving transparency and strength of cellulose nanostructured paper with polyvinylpyrrolidone and Laponite

Guodong Li; Dehai Yu; Zhaoping Song; Huili Wang; Wenxia Liu

doi:10.1016/j.carbpol.2019.115580

Reducing formation time while improving transparency and strength of cellulose nanostructured paper with polyvinylpyrrolidone and Laponite

Carbohydr Polym. 2020 Feb 15:230:115580. doi: 10.1016/j.carbpol.2019.115580. Epub 2019 Nov 7.

Authors

Guodong Li¹, Dehai Yu², Zhaoping Song², Huili Wang², Wenxia Liu³

Affiliations

¹ State Key Laboratory of Biobased Materials and Green Papermaking, Qilu University of Technology, Shandong Academy of Science, Jinan 250353, China. Electronic address: lgd@qlu.edu.cn.
² State Key Laboratory of Biobased Materials and Green Papermaking, Qilu University of Technology, Shandong Academy of Science, Jinan 250353, China.
³ State Key Laboratory of Biobased Materials and Green Papermaking, Qilu University of Technology, Shandong Academy of Science, Jinan 250353, China. Electronic address: liuwenxia@qlu.edu.cn.

PMID: 31887929
DOI: 10.1016/j.carbpol.2019.115580

Abstract

It is a significant challenge to reduce the sheet formation time and simultaneously sustain high transparency and good formation of nanostructured paper made of cellulose fibrils. In this study, a new strategy was developed for expediting the filtration but avoiding the flocculation of cellulose fibrils by using polyvinylpyrrolidone (PVP) and Laponite as dispersants to reduce the viscosity of the cellulose fibril aqueous dispersion. By adding 0.5 % PVP and 0.2 % Laponite to the cellulose fibril dispersion, the sheet formation time was reduced from 135.3-53.0 min, and the transmittance of the nanostructured paper was increased from 82.8%-89.8 %. The addition of PVP and Laponite significantly reduced the roughness and density but improved the tensile strength of the nanostructured paper. This study provides an approach for simultaneously improving the drainability, transparency, tensile strength, and smoothness of cellulose nanostructured paper made of cellulose fibrils.

Keywords: Cellulose (PubChem CID: 3084047); Cellulose fibrils; Dewatering; Laponite; Laponite (PubChem CID: 71587168); Nanostructured paper; Polyaluminum chloride (PubChem CID: 90471972); Polyvinylpyrrolidone; Polyvinylpyrrolidone (PubChem CID: 6917); Transmittance.