Studies on syntheses and permeabilities of special polymer membranes: 33. Permeation behaviour of aqueous alcohol solution through cellulose membranes

Uragami, Tadashi; Sugitani, Yasuhiro; Sugihara, Mizuho

doi:10.1016/0032-3861(82)90299-3

Cited by 12 publications

(11 citation statements)

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“…For researches of dialysis [10], liquid permeation [11,12] [13][14][15]23,26] and pervaporation [16], the liquid content in the membranes is an important parameter concerning permeability. The state of water in cellulosic membranes has been a subject of interest for many years [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Gas permeability of a novel cellulose membrane

Yuan

2002

Journal of Membrane Science

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Section: Introductionmentioning

confidence: 99%

Gas permeability of a novel cellulose membrane

Yuan

2002

Journal of Membrane Science

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“…The membranes were prepared by the method described by Farnand (1983) and Uragami et al (1982). The polymer solution was cast with a glass rod on a smooth glass plate edged with one or more layers of electrical tape to control the cast film thickness.…”

Section: Methodsmentioning

confidence: 99%

Pattern formation on the surface of cellulose membranes prepared by phase inversion technique

Okada¹,

Matsuura²

1988

Ind. Eng. Chem. Res.

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1335In conclusion, the spinodal curve can be used to set the bounds on vapor pressure in equation of state calculations. If a cubic equation of state is used, the method proposed here yields an initial estimate for P,,, that is close to the final converged value and does not require any iterative procedures. The proposed method should also work for higher order equations although, owing to the necessity of solving the equation of state for the volume V', a simpler strategy, such as that described in the previous paragraph, may be desirable. AcknowledgmentThe author thanks reviewer 2 for his comments.

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“…The cellulose membrane was prepared according to the previously reported papers. [8][9][10] Degree of Swelling of Cellulose Alkyl Ester Membranes…”

Section: Preparation Of Cellulose Alkyl Ester Membranesmentioning

confidence: 99%

Permeation and Separation Characteristics of a Mixture of Benzene/Cyclohexane through Cellulose Alkyl Ester Membranes during Pervaporation

Uragami

Tsukamoto

Miyata

2005

Macro Chemistry & Physics

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Summary: Cellulose alkyl esters such as ethyl, butyryl, pentyl, and heptyl cellulose with different numbers of carbon in the alkyl ester group were synthesized for the separation of a mixture of benzene/cyclohexane (Bz/Chx = 5/95 w/w) with a low concentration of benzene. All of cellulose alkyl ester membranes showed high benzene/cyclohexane selectivity for a Bz/Chx mixture in pervaporation. With increasing carbon number in the ester groups, the permeation rate increased but the benzene/cyclohexane selectivity decreased. The increase in the permeation rate could be attributed to an increase in the swelling of the membrane due to the feed mixture, and the decrease in the benzene/cyclohexane selectivity was dependent on both the decrease in the solubility selectivity and the diffusion selectivity. These pervaporation characteristics are discussed from the viewpoints of chemical and physical structure of the cellulose alkyl ester membranes such as the degree of swelling, the contact angle, and the density of the cellulose ester membranes, and the solution composition absorbed into their membranes.

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Studies on syntheses and permeabilities of special polymer membranes: 33. Permeation behaviour of aqueous alcohol solution through cellulose membranes

Cited by 12 publications

References 10 publications

Gas permeability of a novel cellulose membrane

Gas permeability of a novel cellulose membrane

Pattern formation on the surface of cellulose membranes prepared by phase inversion technique

Permeation and Separation Characteristics of a Mixture of Benzene/Cyclohexane through Cellulose Alkyl Ester Membranes during Pervaporation

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