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Copolymerization of N-phenylmaleimide with 2-hydroxyethyl and ethyl methacrylates

✍ Scribed by Serap Şenel; Zakir M. O. Rzaev; Erhan Pişkin

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
184 KB
Volume
52
Category
Article
ISSN
0959-8103

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✦ Synopsis

Abstract

Radical copolymerization of N‐phenylmaleimide (PhMI) with 2‐hydroxyethyl methacrylate (HEMA) and ethyl methacrylate (EMA) was studied. Synthesis of copolymers was carried out in p‐dioxane at 65 °C with 2,2′‐azobisisobutyronitrile as the initiator. Copolymer compositions were calculated by the elemental analysis and ^1^H NMR spectroscopy methods. Monomer reactivity ratios for the studied monomer pairs were determined using Kelen–Tüdös and non‐linear regression methods. PhMI monomer was found to have substantially different copolymerization constants in the radical copolymerization of the two monomer systems. Poly(PhMI‐co‐HEMA) possessed higher values of intrinsic viscosity and higher thermal stability, as well as showing specific melting endo‐peaks in the DSC curves. These observations were explained by the effect of H‐bonding between hydroxyl and imide groups with the formation of complexed macromolecular structures. Copyright © 2003 Society of Chemical Industry

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