Separation characteristics of acetic acid-water mixtures using poly(vinyl alcohol-g-4-vinyl pyridine) membranes by pervaporation and temperature difference evapomeation techniques

被引：7

作者：

Asman, G ^{[1
]}

Sanli, O ^{[1
]}

机构：

[1] Gazi Univ Fen Edebiyat, Fak Kimya Bolumu, TR-06500 Ankara, Turkey

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2006年 / 100卷 / 02期

关键词：

separation techniques; membranes; graft copolymers; pervaporation; evapomeation;

D O I：

10.1002/app.23676

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The separation of acetic acid-water mixtures was carried out using pervaporation (PV) and temperature difference evapomeation (TDEV) methods. For the separation process, 4-vinyl pyridine was grafted on poly(vinyl alcohol). Membranes were prepared from the graft-copolymer by casting method and crosslinked by heat treatment. The effects of feed composition on the separation characteristics were studied and the performances of the separation methods were compared. Permeation rates were found to be high in PV whereas separation factors were high in TDEV method. Membranes gave permeation rates of 0.1-3.0 kg/m(2)h and separation factors of 2.0-61.0 depending on the composition of the feed mixture and the method.

引用

页码：1385 / 1394

页数：10

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