Preparation of Imide-modified Benzoxazines and Characterization of Cured Films

Preparation of Imide-modified Benzoxazines and Characterization of Cured Films

We synthesized novel monofunctional and bifunctional benzoxazines having imide groups. Brown-colored transparent films were obtained by curing the benzoxazines up to 240 °C. Monofunctional benzoxazine gave brittle film, but bifunctional benzoxazine gave tough film. Viscoelastic analysis revealed tha...

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Veröffentlicht in:Journal of Photopolymer Science and Technology 2015/06/23, Vol.28(2), pp.145-150
Hauptverfasser: Nagata, Tatsuya, Kurowarabi, Kosaku, Kawauchi, Takehiro, Matsumoto, Akihiko, Furukawa, Nobuyuki, Takeichi, Tsutomu
Format: Artikel
Sprache:eng
Schlagworte:
benzoxazine
Benzoxazines
Brittleness
Curing
Glass transition temperature
imide group
Imides
phenolic resin
Photopolymers
Polybenzoxazines
Thermogravimetric analysis
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Beschreibung
Zusammenfassung:We synthesized novel monofunctional and bifunctional benzoxazines having imide groups. Brown-colored transparent films were obtained by curing the benzoxazines up to 240 °C. Monofunctional benzoxazine gave brittle film, but bifunctional benzoxazine gave tough film. Viscoelastic analysis revealed that glass transition temperature of the polybenzoxazine film obtained from the bifunctional benzoxazine was 289 °C, about 90 °C higher than that of a typical polybenzoxazine. Thermogravimetric analyses revealed that the introduction of imide groups was also effective to improve the thermal stability of polybenzoxazines.
ISSN:0914-9244
1349-6336
DOI:10.2494/photopolymer.28.145