Gas permeability of a novel cellulose membrane

Wu, Jiang; Yuan, Quan

doi:10.1016/s0376-7388(02)00037-6

Cited by 91 publications

(43 citation statements)

References 21 publications

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“…From the structure of Yanin Hosakun -PhD Thesis 24 Introduction and Problem Statement cellulose, there are the strong hydrogen bonds between cellulose chains, hence, cellulose does not melt or dissolve in ordinary solvents (Wu and Yuan, 2002). Although, cellulose produced from plant is chemically the same with that one produced from bacteria (β-1,4-glucans), the degree of polymerization (13,000 to 14,000 for plant cellulose and 2000-6000 for bacterial cellulose), structure, and some properties are different (Jonas and Farah, 1998).…”

Section: -Cellulosementioning

confidence: 99%

ATR-FTIR study of the interaction of CO2 with bacterial cellulose-based membranes

Hosakun

Halász

Horváth

et al. 2017

Chemical Engineering Journal

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Section: -Cellulosementioning

confidence: 99%

ATR-FTIR study of the interaction of CO2 with bacterial cellulose-based membranes

Hosakun

Halász

Horváth

et al. 2017

Chemical Engineering Journal

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“…The dry-state Na-alginate/PVA membranes show very low gas permeation property, similar to that of other hydrophilic polymers. [13][14][15] In hydrophilic polymers such as Na-alginate and PVA, the intermolecular hydrogen bonds are formed mainly between the ring ether oxygen and hydroxyl groups (OH) in PVA, whereas other bonds are also formed with secondary OH at either C-2 or C-3 position and the OH of the PVA component. These hydrogen bonds led to a physical crosslink between polymer chains; the resulting physical crosslink restricted polymer chain mobility, thus decreasing the gas permeation rate.…”

Section: Single Gas Permeationmentioning

confidence: 99%

Gas permeation through water‐swollen polysaccharide/poly(vinyl alcohol) membranes

Kim

Youm

Lee

2004

J of Applied Polymer Sci

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ABSTRACT:The effect of Na-alginate content on the gas permeation properties of water-swollen membranes prepared by varying Na-alginate and poly(vinyl alcohol) (PVA) content in membranes was investigated. The influences of water content and crystallinity of the membranes on the gas permeation performance of the water-swollen membranes were studied. The gas permeation rate and selectivity of Na-alginate/PVA water-swollen membranes were compared with those of the dry membranes. The permeation rates of nitrogen and carbon dioxide through water-swollen membranes were in the range of 0.4 -7.6 ϫ 10 Ϫ7 to 3.7-8.5 ϫ 10 Ϫ6 cm 3 (STP)/cm 2 s Ϫ1 cmHg Ϫ1 , which were 10,000 times higher than those of dry-state membranes. The permeation rates of mixture gases through water-swollen Naalginate/PVA membranes were found to increase exponentially with the increase of Na-alginate content, whereas carbon dioxide concentration in permeates was decreased linearly. It was found that the gas permeance of the waterswollen membranes increased with increasing the Na-alginate content in the membrane. Gas permeation rates of the water-swollen Na-alginate/PVA membranes increased with increasing the water content in the membrane and decreasing the crystallinity of the membrane.

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“…11 For example, P CO 2 of the water saturated CHFM was 112.5 barrer (from Table I), which was less than 120 barrer of the wet cellulose flat membrane. The separation factor ␣ (CO 2 /H 2 ) is 16, which is a little higher than 15 of the flat cellulose membrane.…”

Section: Influence Of Water Content On the Gas Permeation Performancementioning

confidence: 93%

Gas permeation performance of cellulose hollow fiber membranes made from the cellulose/N‐methylmorpholine‐N‐oxide/H₂O system

Xiao

Cao

Lin

et al. 2003

J of Applied Polymer Sci

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Cellulose hollow fiber membranes (CHFM) were prepared using a spinning solution containing N-methylmorpholine-N-oxide as solvent and water as a nonsolvent additive. Water was also used as both the internal and external coagulant. It was demonstrated that the phase separation mechanism of this system was delayed demixing. The CHFM was revealed to be homogeneously dense structure after desiccation. The gas permeation properties of CO 2 , N 2 , CH 4 , and H 2 through CHFM were investigated as a function of membrane water content and operation pressure. The water content of CHFM had crucial influence on gas permeation performance, and the permeation rates of all gases increased sharply with the increase of membrane water content. The permeation rate of CO 2 increased with the increase of operation pressure, which has no significant effect on N 2 , H 2 , and CH 4 . At the end of this article a detailed comparison of gas permeation performance and mechanism between the CHFM and cellulose acetate flat membrane was given.

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Gas permeability of a novel cellulose membrane

Cited by 91 publications

References 21 publications

ATR-FTIR study of the interaction of CO2 with bacterial cellulose-based membranes

ATR-FTIR study of the interaction of CO2 with bacterial cellulose-based membranes

Gas permeation through water‐swollen polysaccharide/poly(vinyl alcohol) membranes

Gas permeation performance of cellulose hollow fiber membranes made from the cellulose/N‐methylmorpholine‐N‐oxide/H₂O system

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Gas permeability of a novel cellulose membrane

Cited by 91 publications

References 21 publications

ATR-FTIR study of the interaction of CO2 with bacterial cellulose-based membranes

ATR-FTIR study of the interaction of CO2 with bacterial cellulose-based membranes

Gas permeation through water‐swollen polysaccharide/poly(vinyl alcohol) membranes

Gas permeation performance of cellulose hollow fiber membranes made from the cellulose/N‐methylmorpholine‐N‐oxide/H2O system

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Product

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Gas permeation performance of cellulose hollow fiber membranes made from the cellulose/N‐methylmorpholine‐N‐oxide/H₂O system