Iranian Polymer Journal, ( ISI ), Volume (26), No (11), Year (2017-10) , Pages (833-849)

Title : ( Performance evaluation of polyvinylchloride/polyacrylonitrile ultrafiltration blend membrane )

Authors: mojgan pakbaz , Zahra Maghsoud ,

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Polyvinylchloride (PVC) membranes were modified by blending with polyacrylonitrile (PAN) as a second polymer. The miscibility of PVC/PAN blend was examined using an incompressible regular solution (CRS) model in no need to make a membrane. The results showed that the PVC/ PAN blend was immiscible for all compositions at a temperature range of −25 to 225 °C. Furthermore, the prediction of the phase behavior of a PVC/PAN/DMF ternary system showed that the blend of two polymers was highly incompatible even in their common DMF solvent. However, this incompatibility led to a remarkable increase in the porosity of the blend membrane and pure water flux compared to those for pure PVC membrane. The pure water flux of the PVC membrane (37.9 ± 1.5 L/m2 h) increased about 41 and 76% by adding 10 and 20 wt% PAN, respectively. The blend membranes also showed an enhanced flux recovery ratio (FRR) compared to a pure PVC membrane, although the PVC membrane rejection for Bovine serum albumin (BSA) was decreased after blending with PAN. The PVC/ PAN (90/10) blend membrane was subjected to hydrolysis with NaOH alkaline solution at three different concentrations and contact times to further enhance its performance. The membrane, which was hydrolyzed with a 0.5 mol/L NaOH solution for 0.5 h, showed a highest pure water flux of 75.6 ± 7.2 L/m2 h due to its increased hydrophilicity. This membrane also revealed an improved FRR and better thermal and mechanical properties compared to an unmodified membrane.


, PVC/PAN blend membrane, Miscibility, CRS model, Hydrolysis Modification
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author = {Pakbaz, Mojgan and Maghsoud, Zahra},
title = {Performance evaluation of polyvinylchloride/polyacrylonitrile ultrafiltration blend membrane},
journal = {Iranian Polymer Journal},
year = {2017},
volume = {26},
number = {11},
month = {October},
issn = {1026-1265},
pages = {833--849},
numpages = {16},
keywords = {PVC/PAN blend membrane; Miscibility; CRS model; Hydrolysis Modification},


%0 Journal Article
%T Performance evaluation of polyvinylchloride/polyacrylonitrile ultrafiltration blend membrane
%A Pakbaz, Mojgan
%A Maghsoud, Zahra
%J Iranian Polymer Journal
%@ 1026-1265
%D 2017