Abstract
AbstractTernary copolymerization of tri‐n‐butyltin acrylate (BTA) with methyl acrylate (MA), methyl methacrylate (MMA), styrene (ST), acrylonitrile (AN) and N‐methacryloyloxytetrabromophthalimide (NMTP) was carried out in solution at 65 °C in the presence of azobisisobutyronitrile (AIBN) as a free radical initiator. Experimental terpolymerization data agree well with calculations based on the Alfrey–Goldfinger equation. The determination of unitary, binary and ternary azeotropes of the systems studied was easily handled by a computer program. Ternary azeotropic compositions for BTA‐NMTP‐ST and BTA‐NMTP‐AN were 71:8:21 and 25:25:50 mol%, respectively. Selective unitary and binary azeotropic compositions were polymerized and the 26:20:54 results obtained show good agreement between the theoretical and experimental terpolymer compositions for each case. Also, pseudo‐azeotropic regions were identified where the deviation between feed and polymer composition is very small. The azeotropic points of the four systems were confirmed using Turasov et al's equations and were found to have satisfactory results. Copyright © 2004 Society of Chemical Industry
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