TEMPO氧化纳米纤维素的制备及其对纸张性能的影响

doi:10.3969/j.issn.1673-5854.2022.02.005

生物质化学工程 ›› 2022, Vol. 56 ›› Issue (2): 27-32.doi: 10.3969/j.issn.1673-5854.2022.02.005

TEMPO氧化纳米纤维素的制备及其对纸张性能的影响

杨冉(), 吴玉乐, 关莹, 高慧()

安徽农业大学林学与园林学院, 安徽合肥 230036

收稿日期:2020-09-01 出版日期:2022-03-30 发布日期:2022-03-25
通讯作者: 高慧 E-mail:15655165813@163.com;huigaozh@163.com
作者简介:高慧, 教授, 硕士生导师, 研究领域为制浆造纸及生物质材料高值化利用; E-mail: huigaozh@163.com
杨冉(1996—), 男, 安徽安庆人, 硕士生, 主要从事生物质材料高值化利用研究; E-mail: 15655165813@163.com
基金资助:
安徽省自然科学基金资助项目(1808085MC68)

Preparation of TEMPO Oxidized Nanocellulose and Its Effect on Paper Properties

Ran YANG(), Yule WU, Ying GUAN, Hui GAO()

School of Forestry and Landscape, Anhui Agricultural University, Hefei 230036, China

Received:2020-09-01 Online:2022-03-30 Published:2022-03-25
Contact: Hui GAO E-mail:15655165813@163.com;huigaozh@163.com

摘要/Abstract

摘要：

以漂白桉木浆和废报纸为原料, 利用2, 2, 6, 6-四甲基哌啶-1-氧自由基(TEMPO)/NaBr/NaClO氧化体系对其进行处理制备氧化纳米纤维素, 并探究两种氧化纳米纤维素添加量对纸张性能的影响。研究结果表明: 桉木浆氧化纳米纤维素的平均纤维长度约为75~95 nm, 长径比约为6.5~8.5, 均高于废报纸氧化纳米纤维素(45~75 nm, 4~6)。添加桉木浆氧化纳米纤维素和废报纸氧化纳米纤维素均可使纸张抗张指数、耐破指数和撕裂指数增加。添加6%桉木浆氧化纳米纤维素时, 纸张抗张指数由21.16 (N·m)/g增加至31.37 (N·m)/g, 耐破指数由1.32 (kPa·m²)/g增加至1.84 (kPa·m²)/g, 撕裂指数由6.61 (mN·m²)/g增加至8.03 (mN·m²)/g; 添加6%废报纸氧化纳米纤维素时, 纸张抗张指数由21.16 (N·m)/g增加至27.22 (N·m)/g, 耐破指数由1.32 (kPa·m²)/g增加至1.79 (kPa·m²)/g, 添加4%废报纸氧化纳米纤维素, 纸张撕裂指数由6.61 (mN·m²)/g增加至8.12 (mN·m²)/g, 可见, 添加桉木浆氧化纳米纤维素效果更佳。添加1%阳离子淀粉, 有助于两种氧化纳米纤维素对纸张强度的提高, 其中桉木浆氧化纳米纤维素可使抗张指数最大提高51.09%, 耐破指数提高50.00%, 撕裂指数提高27.62%。

关键词: TEMPO氧化, 漂白桉木浆, 废报纸, 造纸增强剂, 纳米纤维素

Abstract:

The bleached eucalyptus pulp and waste newspapers were used as raw materials to prepare oxidized nanocellulose by 2, 2, 6, 6-Tetramethylpiperidine-1-oxyl (TEMPO)/NaBr/NaClO oxidation system, and the effects of the addition amounts of two oxidized nanocellulose on paper properties were investigated in this study. The results showed that the average fiber length and aspect ratio of eucalyptus oxidized nanocellulose(75-95 nm, 6.5-8.5) were both higher than that of waste newspaper oxidized nanocellulose(45-75 nm, 4-6). The tensile index of the eucalyptus and waste newspaper oxidized nanocellulose paper increased from 21.16 (N·m)/g to 31.37 and 27.22 (N·m)/g, the burst index increased from 1.32 (kPa·m²)/g to 1.84 and 1.79 (kPa·m²)/g, and the tear index increased from 6.61 (mN·m²)/g to 8.03 and 8.12 (mN·m²)/g. It was more helpful to improve the paper strength by the two kinds of oxidized nanocellulose by the addition of cationic starch. The tensile index of paper was increased by 51.09%, the burst index 50.00%, and the tear index 27.62%.

Key words: TEMPO oxidation, eucalyptus wood pulp, waste newspaper, paper intensifier, nanocellulose

中图分类号:

TQ35
TS72

杨冉, 吴玉乐, 关莹, 高慧. TEMPO氧化纳米纤维素的制备及其对纸张性能的影响[J]. 生物质化学工程, 2022, 56(2): 27-32.

Ran YANG, Yule WU, Ying GUAN, Hui GAO. Preparation of TEMPO Oxidized Nanocellulose and Its Effect on Paper Properties[J]. Biomass Chemical Engineering, 2022, 56(2): 27-32.

图/表 3

参考文献 22

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TEMPO氧化纳米纤维素的制备及其对纸张性能的影响

Preparation of TEMPO Oxidized Nanocellulose and Its Effect on Paper Properties

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