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Research Article | Open Access

Lignin-containing Microfibrillated Cellulose Prepared from Corncob Residue via Calcium Hydroxide Co-grinding and Its Application in Paper Reinforcement

Jinghuan Chen1,2, Jingang Liu1,2( ), Zehong Xu1,2
China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102, China
National Engineering Lab for Pulp and Paper, Beijing, 100102, China
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Abstract

In this study, lignin-containing microfibrillated cellulose (MFC) was prepared from corncob residue after xylose extraction via co-grinding with calcium hydroxide. The product was then compared with the MFC obtained by direct grinding and applied to strengthen paper. The chemical composition and morphological structure analysis results showed that the corncob residue can be used to prepare lignin-containing MFC and does not require further purification. Moreover, the co-grinding with calcium hydroxide is easier to fibrillate corncob residue. The MFC obtained by co-grinding with calcium hydroxide had a higher aspect ratio, and its surface was coated with calcium carbonate nanoparticles. MFCs obtained by both the methods mentioned above had an obvious strengthening effect on paper. Compared with the paper without MFC, the tensile index, elongation, burst index, and folding strength of the paper with MFC obtained by co-grinding with calcium hydroxide significantly increased by 17.5%, 22.1%, 19.5%, and 157.1%, respectively. This study provides a novel idea for the utilization of corncob residue, which may enhance the value and promote the comprehensive utilization of corn by-products.

Keywords

corncob residuemicrofibrillated cellulosecalcium hydroxideco-grindingpaper reinforcement

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Paper and Biomaterials
Volume 7 Issue 2,
April 2022
Pages 37-45
DOI: 10.1213/j.issn.2096-2355.2022.02.005
Cite this article:
Chen J, Liu J, Xu Z. Lignin-containing Microfibrillated Cellulose Prepared from Corncob Residue via Calcium Hydroxide Co-grinding and Its Application in Paper Reinforcement. Paper and Biomaterials, 2022, 7(2): 37-45. https://doi.org/10.1213/j.issn.2096-2355.2022.02.005

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Received: 15 February 2022
Accepted: 04 March 2022
Published: 25 April 2022
© 2022 Paper and Biomaterials

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
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