Fabrication and Evaluation of Bio-Based Nanocomposite TFC Hollow Fiber Membranes for Enhanced CO2 Capture

• DOI: 10.1021/acsami.8b19651
• Publication Date: 2019-02-22T22:42:48Z
• Authors: Zhongde Dai; Jing Deng; Qiang Yu; Ragne M. L. Helberg; Saravanan Janakiram; Luca Ansaloni; Liyuan Deng
• Keywords: Nanocellulose; Thermogravimetric analysis; Permeance

Nanocellulose is a promising and sustainable biobased nanomaterial because of its excellent mechanical properties, biocompatibility, natural abundance, especially high aspect ratio. Interest in applying nanocellulose as nanofillers membrane fabrication has been growing rapidly recent years. In the present work, crystals (CNCs) fibers (CNFs) were incorporated into polyvinyl alcohol (PVA) to prepare evenly dispersed nanocomposites. The resultant nanocomposite materials containing up 80 wt % coated defect-free, thin-film-composite selective layers onto hollow fiber substrates via dip-coating for efficient CO2 capture. Thermogravimetric analysis, Fourier-transform infrared, X-ray diffraction, scanning transmission electron microscopy, humid mixed gas permeation test used evaluate membranes. PVA/CNC membranes exhibit both higher permeance CO2/N2 selectivity compared PVA/CNF neat PVA addition CNCs showed more positive effects on CNFs. Under optimized conditions, 672 GPU with 43.6 was obtained membrane. Excellent long-term stability also documented within period 1 year. interface between polymer phase charged CNFs believed form fast transport channels at state thus enhances permeation.