Browsing NTNU Open by Author "Helberg, Ragne M Lilleby"
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A Brief Review of Nanocellulose Based Hybrid Membranes for CO2 Separation
Dai, Zhongde; Ottesen, Vegar; Deng, Jing; Helberg, Ragne M Lilleby; Deng, Liyuan (Journal article; Peer reviewed, 2019)Due to the high specific surface area, high mechanical strength and broad possibility of surface modification, nanocellulose has obtained much attention as a new class of bio-based nanomaterials with promising potential ... -
Fabrication and Evaluation of Bio-based Nanocomposite TFC Hollow Fiber Membranes for Enhanced CO2 capture
Dai, Zhongde; Deng, Jing; Yu, Qiang; Helberg, Ragne M Lilleby; Janakiram, Saravanan; Ansaloni, Luca; Deng, Liyuan (Journal article; Peer reviewed, 2019)Nanocellulose is a promising and sustainable biobased nanomaterial because of its excellent mechanical properties, biocompatibility, natural abundance, and especially its high aspect ratio. Interest in applying nanocellulose ... -
Nanocomposite membranes with high-charge and size-screened phosphorylated nanocellulose fibrils for CO2 separation
Helberg, Ragne M Lilleby; Torstensen, Jonathan Økland; Dai, Zhongde; Janakiram, Saravanan; Chinga-Carrasco, Gary; Gregersen, Øyvind Weiby; Syverud, Kristin; Deng, Liyuan (Peer reviewed; Journal article, 2020)In this study, cellulose nanofibrils (CNF) of high charge (H-P-CNF) and screened size (H-P-CNF-S) were fabricated by increasing the charge of phosphorylated cellulose nanofibrils (P-CNFs) during the pre-treatment step of ... -
PVA/nanocellulose nanocomposite membranes for CO2 separation from flue gas
Torstensen, Jonathan Økland; Helberg, Ragne M Lilleby; Deng, Liyuan; Gregersen, Øyvind Weiby; Syverud, Kristin (Peer reviewed; Journal article, 2019)In this paper, we explore the use of nanocelluloses as an additive to poly (vinyl alcohol) (PVA) nanocomposite membranes for CO2/N2 mixed-gas separation. Our findings are that several types of nanocellulose can be used to ... -
PVA/PVP blend polymer matrix for hosting carriers in facilitated transport membranes: Synergistic enhancement of CO2 separation performance
Helberg, Ragne M Lilleby; Dai, Zhongde; Ansaloni, Luca; Deng, Liyuan (Journal article; Peer reviewed, 2019)CO2 separation performance in facilitated transport membranes has been reported depended not only on the CO2 carrier properties but also to a great extent on the polymeric matrix regarding the capacity of retaining water ...