Open Access

ARTICLE

Study on Preparation of Lignin-Containing Nanocellulose from Bamboo Parenchyma

by Wenli Gu¹, Shiyi Zeng¹, Assima Dauletbek², Bin Xu^1,3,*, Xinzhou Wang¹, Man Yuan¹, Yanni Gu¹

1 College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
2 College of Civil Engineering, Nanjing Forestry University, Nanjing, 210037, China
3 Bamboo Engineering and Technology Research Center, State Forestry and Grassland Administration, Nanjing, 210037, China

* Corresponding Author: Bin Xu. Email:

(This article belongs to the Special Issue: Advanced Wood Composites from Renewable Materials)

Journal of Renewable Materials 2022, 10(2), 385-399. https://doi.org/10.32604/jrm.2022.016457

Received 07 March 2021; Accepted 26 April 2021; Issue published 30 August 2021

Abstract

Bamboo vascular bundle fiber and parenchyma (BP) are separated by high-temperature treatment with saturated steam. Bamboo vascular bundle fiber is widely used in the market, but how to develop and utilize parenchyma tissue is a difficult problem. The sulfated cellulose nanofibers (ANFs) were obtained by sulfating BP with a deep eutectic solvent (DES), which provided a theoretical basis for the value-added utilization of BP. Using DES as the reaction medium and reagent, the BP was grafted with a sulfonic acid group to form a gel substance in water, ANFs and nanocellulose gel were obtained by ultrasonic cell crusher. The highest yield of ANFS was 75%. The width of the ANFs was about 3 nm, and a small number of nanofiber aggregates existed at the same time. A high aspect ratio of ANFs, due to their high viscosity, has potential applications as enhancers at low concentrations. Lewis acid (ZnCl₂) added based on binary (DES) greatly improved the thermal stability of the ANFs and maintained the crystal form of cellulose I.

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