Title: EFFECT OF POLYMERIZATION CONDITIONS ON THE DENSITY AND TG OF BISPHENOL-A AND HEXAFLUOROISOPROPYLIDENE-CONTAINING POLYBENZOXAZINES
Page Range: p.367-376
Author(s): Kanchanasopa M; Yanumet N; Hemvichian K; Ishida H
File size: 81K
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Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 9
Issue No: No. 6
Abstract
The volumetric expansion of bisphenol-A and aniline-based benzoxazine is studied by comparing the room temperature density of the cured benzoxazine under different polymerisation conditions with the amorphous benzoxazine monomer. The Tg of aniline-based benzoxazine at various degrees of polymerisation is investigated by differential scanning calorimetry, and the degrees of conversion at different polymerisation temperatures were compared with the respective Tg temperatures. A fluorinated polybenzoxazine was synthesised from the ring opening polymerisation of hexafluoroisopropylidene-containing benzoxazine monomer. Properties of the fluorine-containing polymer were compared to those of non-fluorinated polybenzoxazine. The effect of fluorine incorporation on Tg temperature and thermal stability are examined. 29 refs.
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