交联剂用量对纳米纤维素交联气凝胶结构的影响

吕少一; 陈艳萍; 韩申杰; 郭丽敏; 王思群; 陈志林

doi:10.19455/j.mcgy.20170602

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交联剂用量对纳米纤维素交联气凝胶结构的影响
Influences of Crosslink Usage on Structure of Nanocellulose Cross-linked Aerogels
1. 中国林科院木材工业研究所
2. 国家林业局木材科学与技术重点实验室3. 美国田纳西大学再生碳中心
2017年31卷第6期页码：10-14
DOI： 10.19455/j.mcgy.20170602

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[1]吕少一,陈艳萍,韩申杰,郭丽敏,王思群,陈志林.交联剂用量对纳米纤维素交联气凝胶结构的影响[J].木材工业,2017,31(06):10-14.

LV Shao-yi, CHEN Yan-ping, HAN Shen jie, et al. Influences of Crosslink Usage on Structure of Nanocellulose Cross-linked Aerogels[J]. China Wood Industry, 2017,31(6):10-14.
[1]吕少一,陈艳萍,韩申杰,郭丽敏,王思群,陈志林.交联剂用量对纳米纤维素交联气凝胶结构的影响[J].木材工业,2017,31(06):10-14. DOI： 10.19455/j.mcgy.20170602.

LV Shao-yi, CHEN Yan-ping, HAN Shen jie, et al. Influences of Crosslink Usage on Structure of Nanocellulose Cross-linked Aerogels[J]. China Wood Industry, 2017,31(6):10-14. DOI： 10.19455/j.mcgy.20170602.

摘要

以1,2,3,4-丁烷四羧酸（BTCA）为交联剂,制备木浆纤维（WPF）/纤维素纳米晶体（CNC）交联气凝胶,探讨交联剂用量对气凝胶的微观形貌、化学结构、晶型结构、孔隙结构的影响规律。结果表明:气凝胶由WPF/CNC相互交织形成三维网络结构,且在WPF周围环绕CNC形成纳米纤维;BTCA交联对气凝胶的结构影响显著,用量增加可致气凝胶的结晶度、比表面积和孔容减小。

Abstract

In order to develop functional aerogel materials, wood pulp fiber（WPF）/cellulose nanocrystals（CNC） crosslinked aerogels were prepared by using 1, 2, 3, 4-butanetetracarboxylic acid（BTCA） as the crosslinking material. The authors then investigated the degree of cross-linking due to morphology,specific surface area, pore structure, crystallization and chemical structure of the aerogels. The results showed that the aerogels had a three-dimensional network structure formed by intertwined WPF and CNC,and the WPF was surrounded by nanofibers formed by the CNC. BTCA crosslinking had a significant effect on the structure and properties of the aerogels. As the crosslinking material increased, crystallinity,specific surface area and pore volume of the aerogels decreased.