Preparation and Properties of Nanocellulose-Based Flame-Retardant Hydrophobic Aerogel

CHEN Jirui; LIU Huan; FANG Xiaolong; ZHANG Wenbiao

doi:10.12326/j.2096-9694.2025003

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Preparation and Properties of Nanocellulose-Based Flame-Retardant Hydrophobic Aerogel
1.Suichang Wenzhao Bamboo Charcoal Co.，Ltd.，Lishui 323300，Zhejiang，China
2.Bamboo Industry Institute，Zhejiang A&F University，Hangzhou 311300，Zhejiang，China
3.Jiangshan Oupai Door Industry Co.，Ltd.，Quzhou 324000，Zhejiang，China
Vol. 39, Issue 3, Pages: 19-25(2025)
DOI： 10.12326/j.2096-9694.2025003
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陈冀锐,刘焕,方小龙等.纤维素纳米纤维基阻燃疏水气凝胶的制备及性能[J].木材科学与技术,2025,39(03):19-25. DOI： 10.12326/j.2096-9694.2025003.

CHEN Jirui,LIU Huan,FANG Xiaolong,et al.Preparation and Properties of Nanocellulose-Based Flame-Retardant Hydrophobic Aerogel[J].Chinese Journal of Wood Science and Technology,2025,39(03):19-25. DOI： 10.12326/j.2096-9694.2025003.

摘要

纤维素纳米纤维（cellulose nanofibers，CNF）基气凝胶的亲水性和易燃性限制其应用。针对此问题，以CNF为基体，壳聚糖（chitosan，CS）和氢氧化镁（Mg（OH）

）为阻燃剂，聚二甲基硅氧烷（polydimethylsiloxane，PDMS）为疏水剂，通过超声波均态化复合及冷冻干燥低温处理，制备具有疏水和阻燃性能的CNF/CS/Mg(OH)

/PDMS气凝胶（简写为CCMP气凝胶）。CCMP气凝胶具有规则的三维网孔结构和低密度（40.10 mg/cm

），超声均态化处理使CS和Mg（OH）

均匀分布在CNF表面，CS和Mg（OH）

的添加使得其极限氧指数（limiting oxygen index，LOI）高达54.4%，PDMS的加入使得其水接触角（water contact angle，WCA）达到139.0±1.3°。研究为构建CNF基阻燃疏水气凝胶提供新途径。

Abstract

The hydrophilic and flammable properties of cellulose nanofibers (CNF) based aerogels limit their applications. To alleviate these challenges

using CNF as the matrix

both chitosan (CS) and magnesium hydroxide (Mg(OH)

) as the flame-retardant additives

and polydimethylsiloxane (PDMS) as the hydrophobic agent

a hydrophobic and flame-retardant CNF-based aerogel (named CCMP aerogel)was made through ultrasonic homogenization compounding and freeze-drying at a low temperature. The novel constructed CCMP aerogel presented a typical three-dimensional mesh structure and a low density (40.10 mg/cm³). The ultrasonic homogenization treatment evenly distributes CS and Mg(OH)

on CNF surface. Adding both CS and Mg(OH)

in the aerogels led limiting oxygen index (LOI) value up to 54.4%. Moreover

the added PDMS results a water contact angle (WCA) of 139.0 ± 1.3° in the hydrophilic CNF-based aerogel. This study provides a new approach for constructing CNF-based flame-retardant hydrophobic aerogels.

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Keywords

references

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