Investigation of Porous Structure of Aerogel Prepared from Nanofibrillated Cellulose

• DOI: 10.7584/jktappi.2016.12.48.6.17
• Publication Date: 2017-02-10T04:53:55Z
• Authors: Chen Gong; Yu Shi; Jian-Ping Ni; Xiao-Bo Yang; Yan-Zhao Liu; Chao Tian
• Keywords: Porosimetry; Specific surface area; Liquid nitrogen; Ambient pressure

Cellulose aerogels were prepared through changing the concentration of TEMPO-oxidized cellulose suspension and applying high-pressure homogenization, followed by regular or rapid freeze drying methods. The aerogel was studied scanning electron microscopy, BET analysis (nitrogen gas adsorption), mercury intrusion porosimetry to investigate effect variables on porous properties. In present study, structure well obtained varying NFC approach. specific surface area varied linearly with adjusting concentrations NFC, highest attained at 2.0% in this study. Compared freezing freezer, liquid nitrogen has a lower value but more uniform relatively narrow pore size distribution.