Vapor permeation of aqueous ethanol mixtures through agarose membranes

Vapor permeation of aqueous ethanol mixtures through agarose membranes
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乙醇水溶液混合物通过琼脂糖膜的蒸气渗透

DOI:
10.1016/j.memsci.2014.01.052
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发表时间:
2014
影响因子:
9.5
通讯作者:
M. Yoshikawa
M. Yoshikawa
中科院分区:
工程技术1区
文献类型:
--
作者:
Y. Fujita;M. Yoshikawa

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蒸气渗透膜是从“绿色”聚合物琼脂糖中获得的。琼脂糖和交联琼脂糖膜通过蒸汽渗透优先从含水乙醇混合物中输送水蒸汽。扩散实验表明,对水蒸气的渗透选择性由溶解度选择性和扩散选择性来表示。研究了膜的差示量热熔化吸热,以澄清膜中水的状态。结果表明,膜中存在多种水态,例如结合水和游离(大量)水。本研究表明,膜中结合水的存在是通过蒸汽渗透从含水乙醇混合物中选择性传输水蒸汽的必要条件。此外,初步研究表明该膜适用于正渗透。
Vapor permeation membranes were obtained from a “green” polymer, agarose. Agarose and crosslinked agarose membranes preferentially transported water vapor from aqueous ethanol mixtures by vapor permeation. Diffusion experiments revealed that the permselectivity toward water vapor was expressed by both solubility selectivity and diffusivity selectivity. Differential calorimetric melting endotherms of the membranes were studied to clarify the state of water in the membrane. The results revealed that there were a couple of states of water in the membrane, such as bound and free (bulk) water. The present study suggests that the existence of bound water in a membrane is requisite to selectively transport water vapor from aqueous ethanol mixture by vapor permeation. In addition, preliminary study revealed that the membranes were applicable to forward osmosis.
用于手性分离的蛋壳膜
DOI: 10.5360/membrane.26.228
发表时间: 2001
期刊: --
影响因子: --
作者:
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