Micro- and nano-fibrils of manau rattan and solvent-exchange-induced high-haze transparent holocellulose nanofibril film

Xiaoshuai Han; Jiangbo Wang; Jingwen Wang; Linhu Ding; Kai Zhang; Jingquan Han; Shaohua Jiang

doi:10.1016/j.carbpol.2022.120075

Micro- and nano-fibrils of manau rattan and solvent-exchange-induced high-haze transparent holocellulose nanofibril film

Carbohydr Polym. 2022 Dec 15:298:120075. doi: 10.1016/j.carbpol.2022.120075. Epub 2022 Sep 7.

Authors

Xiaoshuai Han¹, Jiangbo Wang², Jingwen Wang³, Linhu Ding³, Kai Zhang⁴, Jingquan Han³, Shaohua Jiang⁵

Affiliations

¹ Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
² School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo 315211, China.
³ Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China.
⁴ State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
⁵ Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China. Electronic address: shaohua.jiang@njfu.edu.cn.

PMID: 36241270
DOI: 10.1016/j.carbpol.2022.120075

Abstract

Holocellulose nanofibrils (HCNFs) are nanoscale objects extracted from biomass resources and have attracted attention as sustainable building blocks for nanomaterials. In this study, we report a top-down approach for extracting HCNFs from manau rattan that involves pulping, bleaching and TEMPO oxidation. The extracted HCNFs showed a uniform width of around 18.5 nm and a length of a few micrometers, high crystallinity (66.5 %), and good thermal stability (302 °C). The extracted HCNFs were used to fabricate HCNF film via vacuum filtration and drying (air drying and solvent exchange drying). Surprisingly, the HCNF film fabricated by solvent exchange drying (HCNF-film_SD) simultaneously presented a high total transmittance (93.7 %) and high haze (62.2 %), and its total transmittance was even higher than that of glass. The resulting HCNF-film_SD displayed a high tensile strength (84.8 MPa), Young's modulus (3.7 GPa), and toughness (1.4 MJ m^-3), making it a high-performance and eco-friendly film for applications in precision optoelectronics and aerospace materials.

Keywords: HCNF film; Haze; Holocellulose nanofibrils (HCNFs); Solvent-exchange drying; Transmittance.

MeSH terms

Cellulose*
Elastic Modulus
Nanostructures*
Solvents
Tensile Strength

Substances

Solvents
Cellulose