DUAN Yifan 1, ZHANG Guanglei 1, SHI Xinyue 1, ZHANG Xuelian 2, QIN Guoqiang 1
(1. School of Materials Science and Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, Hebei, China; 2. College of Chemistry and Chemical Engineering, Hulunbuir University, Hulunbuir 021008, Neimongol, China)
Abstract: Natural cellulose is a green material with wide distribution and large reserves in nature. Cellulose aerogels prepared by freeze-drying technology with cellulose as matrix have not only three-dimensional structural characteristics of silica aerogels, but also excellent properties such as biocompatibility, biodegradability and adsorbing capability. From the view point of raw materials and fabrication technology, characteristics, preparation and application of nano-cellulose aerogels, bacterial cellulose aerogels, regenerated cellulose aerogels and cellulose derivative aerogels are summarized in this article. The problems faced by cellulose aerogels are put forward and the application prospect of cellulose aerogels is prospected.
Key words: cellulose aerogels; freeze drying; adsorption and separation; biomedical materials