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Azeotropy in terpolymerisation reactions of tributyltin acrylate or methacrylate with itaconic acid or dimethylitaconate and N ‐vinyl‐2‐pyrrolidone
Author(s) -
Azab M. M.
Publication year - 1993
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4990320311
Subject(s) - itaconic acid , ternary operation , polymer chemistry , acrylate , chemistry , acrylamide , methacrylate , copolymer , polymer , organic chemistry , computer science , programming language
Ternary copolymerisations of tri‐ n ‐butyltin acrylate (TBTA) or tri‐ n ‐butyltin methacrylate (TBTMA) with itaconic acid (IA) or dimethylitaconate (DMI) and N ‐vinyl‐2‐pyrrolidone (NVP) were carried out in solution at 70°C in the presence of a free radical initiator. Experimental, terpolymerisation data agreed with calculations based on the Alfrey‐Goldfinger equation. Ternary azeotropic compositions for TBTA‐IA‐NVP and TBTA‐DMI‐NVP systems were 52.60:14.80:32.60 and 56.60:26.60:16.80 mol%, respectively. Also ‘pseudoazeotropic’ regions were identified where the deviation between feed and polymer compositions is very small.