中国塑料 ›› 2022, Vol. 36 ›› Issue (9): 32-37.DOI: 10.19491/j.issn.1001-9278.2022.09.005

• 材料与性能 • 上一篇    下一篇

壳聚糖/壳聚糖接枝氧化石墨烯复合气凝胶的制备及性能研究

陈淑花(), 任子萌, 孙婷婷   

  1. 大连大学环境与化学工程学院,辽宁 大连 116622
  • 收稿日期:2022-05-05 出版日期:2022-09-26 发布日期:2022-09-26
  • 作者简介:陈淑花(1976—),女,副教授,主要从事功能材料的研发,chensh1976@126.com

Preparation and properties of chitosan/chitosan⁃grafted⁃graphene oxide composite aerogels

CHEN Shuhua(), REN Zimeng, SUN Tingting   

  1. College of Environment and Chemical Engineering,Dalian University,Dalian 116622,China
  • Received:2022-05-05 Online:2022-09-26 Published:2022-09-26

摘要:

以壳聚糖(CS)和壳聚糖接枝氧化石墨烯 (CS⁃g⁃GO)为主要原料,通过真空冷冻干燥技术分别制备了CS气凝胶和CS/CS⁃g⁃GO复合气凝胶吸附膜,并通过扫描电子显微镜、红外光谱仪和接触角测量仪等对吸附膜的性能进行了测试和表征,结果表明,CS/CS⁃g⁃GO复合气凝胶的接触角较纯CS大,亲水基团减少;当CS⁃g⁃GO和CS质量比(WCS⁃g⁃GO∶WCS)为100∶1 556、CS⁃g⁃GO的接枝率为76.04 %时制备的复合气凝胶吸附膜对细颗粒物(PM2.5)过滤效率可达到94.1 %;与CS气凝胶相比,过滤效率提高了4.4 %。

关键词: 壳聚糖, 壳聚糖接枝氧化石墨烯, 气凝胶, 细颗粒物, 吸附

Abstract:

The adsorption films based on chitosan (CS)/chitosan⁃g⁃graphene oxide (CS⁃g⁃GO) composite aerogels were prepared through vacuum freeze⁃drying at different mass ratios of two raw materials, and their physical and chemical properties were investigated using SEM, FTIR, and contact angle meter. The results indicated that the filtration efficiency of the composite aerogels reached 94.1 % for PM2.5 filtration at a WCS mass of 0.155 6 g and a grafting rate of 76.04 wt% for CS⁃g⁃GO, which increased by 4.4 % compared to the aerogels without CS⁃g⁃GO.

Key words: chitosan, chitosan grafted graphene oxide, aerogel, fine particulate matter, adsorption

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