High dehumidification performance of amorphous cellulose composite membranes prepared from trimethylsilyl cellulose

摘要: Cellulose is widely regarded as an environmentally friendly, natural and low cost material which can significantly contribute to the sustainable economic growth. In this study, cellulose composite membranes were prepared via regeneration of trimethylsilyl (TMSC), easily synthesized derivative. The amorphous hydrophilic feature regenerated enabled fast permeation water vapour. pore-free layer thickness was adjustable by initial TMSC concentration acted efficient gas barrier. As a result, 5000 GPU vapour transmission rate (WVTR) at highest ideal selectivity 1.1 × 106 achieved spin coated from 7% (w/w) solution. maintained 4000 WVTR with 104 in mixed-gas experiments, surpassing performances previously reported membranes. This study provides simple way not only produce high performance but also advance low-cost membrane for dehumidification applications.