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Miscibility and specific interactions in blends of poly(2-ethyl-2-oxazoline) with hydroxylated polymethacrylates

✍ Scribed by José R. Isasi; Emilio Meaurio; Carlos Cesteros; Issa Katime

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
403 KB
Volume
197
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

The compatibility of blends of poly(2‐ethyl‐2‐oxazoline) (PEOX) with poly(2‐hydroxyethyl methacrylate) (PHEMA) and poly(2‐hydroxypropyl methacrylate) (PHPMA) was investigated by means of differential thermal analysis and infrared spectroscopy. Calorimetric results show single glass transition temperatures in the entire range of compositions for both systems. S‐shaped curves are obtained when plotting the glass transition temperatures vs. blend compositions. IR analysis of blends reveals the existence of specific interactions via hydrogen bonding between the carbonyl and hydroxyl groups of PHEMA and PHPMA. The association phenomena were quantitatively studied from room temperature up to 180°C with the aid of spectral subtraction techniques.

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