Study of solvent casting/particulate leaching technique membranes in pervaporation for dehydration of caprolactam

被引：16

作者：

Lin, Wenhai ^{[1
]}

Li, Qin ^{[1
]}

Zhu, Tianrong ^{[1
]}

机构：

[1] Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2012年 / 18卷 / 03期

关键词：

Solvent casting/particulate leaching technique; epsilon-Caprolactam; Polyvinyl alcohol; Pervaporation; Dehydration; CROSS-LINKED PVA; EPSILON-CAPROLACTAM; CHITOSAN MEMBRANES; MIXTURES; SEPARATION; ETHANOL; COPOLYMERS; TRANSPORT; BEHAVIOR; SORPTION;

D O I：

10.1016/j.jiec.2011.09.007

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

New porous and rough PVA (polyvinyl alcohol) membranes were synthesized by solvent casting/particulate leaching technique to improve caprolactam (CPL) pervaporation (PV) separation dehydration process. The membranes were characterized by FTIR, SEM, XRD, and contact angle measurements. On account of their special structure, solvent casting/particulate leaching technique membranes showed different surface morphologies compared with the original PVA membrane with enhanced hydrophilicity. By evaluating PV performance and mechanism, a PV transport equation was introduced to evaluate composite membrane permeation flux, separation factor, diffusivity/sorptivity selectivity, and activation energy. The maximum flux obtained in this work was greatly improved to 3.2 kg/m(2) h and reached industrial application levels for separating CPL/water mixtures (CPL 70 wt%). Crown Copyright (C) 2012 Published by Elsevier B.V. on behalf of The Korean Society of Industrial and Engineering Chemistry. All rights reserved.

引用

页码：941 / 947

页数：7

共 33 条

[1] Sorption and permeation of binary water-alcohol systems through PVA membranes crosslinked with multifunctional crosslinking agents [J].

Burshe, MC ;

Sawant, SB ;

Joshi, JB ;

Pangarkar, VG .

SEPARATION AND PURIFICATION TECHNOLOGY, 1997, 12 (02) :145-156

[2] Mass transport study of PVA membranes for the pervaporation separation of water/ethanol mixtures [J].

Chen, Jian ;

Huang, Junqi ;

Li, Jiding ;

Zhan, Xia ;

Chen, Cuixian .

DESALINATION, 2010, 256 (1-3) :148-153

[3] MEMBRANES CONTAINING SELECTIVE FLAKES [J].

CUSSLER, EL .

JOURNAL OF MEMBRANE SCIENCE, 1990, 52 (03) :275-288

[4] CONCENTRATION AND TEMPERATURE DEPENDENCE OF DIFFUSION COEFFICIENTS FOR SYSTEMS POLYMETHYL ACRYLATE AND NORMAL-ALKYL ACETATES [J].

FUJITA, H ;

KISHIMOTO, A ;

MATSUMOTO, K .

TRANSACTIONS OF THE FARADAY SOCIETY, 1960, 56 (03) :424-437

[5] Effects of gamma irradiation on the thermal and mechanical properties of chitosan/PVA nanofibrous mats [J].

Jeun, Joon-Pyo ;

Jeon, Young-Kyou ;

Nho, Young-Chang ;

Kang, Phil-Hyun .

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, 2009, 15 (03) :430-433

[6] Mixed matrix membranes prepared from poly(vinyl alcohol) (PVA) incorporated with zeolite 4A-graft-poly(2-hydroxyethyl methacrylate) (zeolite-g-PHEMA) for the pervaporation dehydration of water-acetone mixtures [J].

Khoonsap, Santi ;

Amnuaypanich, Sittipong .

JOURNAL OF MEMBRANE SCIENCE, 2011, 367 (1-2) :182-189

[7]

Kim D, 2006, J IND ENG CHEM, V12, P762

[8]

Kim HS, 1999, J IND ENG CHEM, V5, P65

[9] Radical-induced generation of small silver particles in SPEEK/PVA polymer films and solutions: UV-vis, EPR, and FT-IR studies [J].

Korchev, AS ;

Konovalova, T ;

Cammarata, V ;

Kispert, L ;

Slaten, L ;

Mills, G .

LANGMUIR, 2006, 22 (01) :375-384

[10] INFRARED SPECTRA OF HIGH POLYMERS .5. POLYVINYL ALCOHOL [J].

KRIMM, S ;

LIANG, CY ;

SUTHERLAND, GBBM .

JOURNAL OF POLYMER SCIENCE, 1956, 22 (101) :227-247

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