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Cellulose

, Volume 25, Issue 9, pp 5049–5061 | Cite as

Enzyme-assisted mechanical production of cellulose nanofibrils: thermal stability

  • Kun Zhang
  • Yuehua Zhang
  • Depeng Yan
  • Chenyuan Zhang
  • Shuangxi Nie
Original Paper

Abstract

The influence of enzymatic treatment on the thermal stability of cellulose nanofibrils (CNFs) was investigated. The unbleached bagasse pulp was treated with different dosages of xylanase, and samples were taken at different grinding stages. The produced CNF were characterized by Malvern Zetasizer, TEM, ATR-FTIR and XRD, and the thermal stability of the CNF was evaluated using TGA. The mechanism of enzymatic treatment on the thermal stability of CNF was proposed. The results indicated that all the diameters of produced CNF were < 100 nm. The CNF produced from original pulp has higher thermal stability than those from enzymatic-treated pulp, and the thermal stability of CNF was decreased with the increase of enzyme dosage. The practical application of CNF was actually limited by the reduction of pyrolysis sites, so the proper retention of hemicellulose and lignin in the process of preparing CNF contributes to the improvement of the thermal stability.

Graphical abstract

Keywords

Cellulose nanofibrils Enzymatic treatment Xylanase Thermal stability 

Notes

Acknowledgments

This project was supported by the National Natural Science Foundation of China (31760192), the Scientific Research Foundation of Guangxi University (XGZ160166), and the Guangxi Natural Science Foundation of China (2016GXNSFBA380234).

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Copyright information

© Springer Nature B.V. 2018

Authors and Affiliations

  1. 1.College of Light Industry and Food EngineeringGuangxi UniversityNanningPeople’s Republic of China
  2. 2.Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution ControlNanningPeople’s Republic of China

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