Page 51 - 《精细化工》2022年第6期

第 39 卷第 6 期 精 细 化 工 Vol.39, No.6
2022 年 6 月 FINE CHEMICALS June 2022

功能材料
改性胶原气凝胶复合相变材料的制备及性能

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周建华 1,3 ，周梦园 1,3 ，李 燕 1,3 ，肖安国
（1. 陕西科技大学 轻工科学与工程学院，陕西 西安 710021；2. 水处理功能材料湖南省重点实验室，
湖南文理学院，湖南 常德 415000；3. 轻化工程国家级实验教学示范中心，陕西科技大学，陕西 西安
710021）

摘要：以制革固体废弃物中提取的胶原为原料、双醛羧甲基纤维素（DCMC）为大分子交联剂，通过冷冻干
燥技术制备了 DCMC 改性胶原气凝胶，利用 FTIR 和 SEM 对其结构和形貌进行了表征。结果表明，DCMC
的引入不会改变胶原三股螺旋结构，且制得的 DCMC 改性胶原气凝胶具有丰富的多孔结构、低密度（9.21~
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10.38 mg/cm ）、高孔隙率（94.99%~97.05%）和良好隔热性能。当 DCMC 含量（以胶原质量计，下同）<15%
时，DCMC 改性胶原气凝胶的压缩应力随 DCMC 含量的增加而变大。为进一步提升 DCMC 改性胶原气凝胶的
隔热性能和耐久性，通过真空浸渍法填充相变材料和浸涂法疏水处理，制备出疏水处理的 DCMC 改性胶原气凝
胶复合相变材料，该复合相变材料比 DCMC 改性胶原气凝胶具有更加优异的隔热效果。
关键词：胶原；双醛羧甲基纤维素；气凝胶；席夫碱；相变材料；隔热；功能材料
中图分类号：TB34 文献标识码：A
文章编号：1003-5214 (2022) 06-1117-09 开放科学 (资源服务) 标识码 (OSID)：

Preparation and properties of modified collagen aerogel
composite phase change material

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1,3
1,3
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ZHOU Jianhua , ZHOU Mengyuan , LI Yan , XIAO Anguo
（1. College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an
710021, Shaanxi, China; 2. Hunan Provincial Key Laboratory of Water Treatment Functional Materials, Hunan University
of Arts and Science, Changde 415000, Hunan, China; 3. National Demonstration Center for Experimental Light Chemistry
Engineering Education, Shaanxi University of Science & Technology, Xi'an 710021, Shaanxi, China）
Abstract: Dialdehyde carboxymethyl cellulose (DCMC) modified collagen aerogel was prepared by
freeze-drying method using collagen extracted from tannery solid waste as raw material and DCMC as
macromolecular cross-linking agent. The morphology and structure were characterized by FTIR and SEM.
The results showed that the introduction of DCMC didn't change the triple helix structure of collagen, and
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the prepared DCMC modified collagen aerogel had rich porous structure, low density (9.21~10.38 mg/cm ),
high porosity (94.99%~97.05%) and good heat insulation performance. When the DCMC content (based on
the mass of collagen, the same below) was less than 15%, the compression stress of the DCMC modified
collagen aerogel was reinforced positively with the increase of DCMC content. In order to further improve
its thermal insulation performance and durability, DCMC modified collagen aerogel was filled with phase
change material by vacuum impregnation and then hydrophobic treatment for the preparation of DCMC
modified collagen aerogel composite phase change material. The DCMC modified collagen aerogel
composite phase change material had more excellent thermal insulation performance than the DCMC
modified collagen aerogel.
Key words: collagen; dialdehyde carboxymethyl cellulose; aerogels; Schiff base; phase change material;
heat insulation; functional materials

收稿日期：2021-12-09; 定用日期：2022-02-24; DOI: 10.13550/j.jxhg.20211261
基金项目：国家自然科学基金项目（21978162）；水处理功能材料湖南省重点实验室开放基金课题（KFJJ2101）
作者简介：周建华（1973—），女，教授，博士生导师，E-mail：zhoujianhua@sust.edu.cn。