Novel method for preparation of poly(benzoxazinone-imide)

Tuning the spectral, thermal and fluorescent properties of conjugated polymers via random copolymerization of hole transporting monomers

“…The char value in these copolymers was much higher than in pure POPD which resulted from some synergistic mechanism. 38,39 The above methods therefore justify their use in determining the activation energy of the solid state decomposition of these copolymers. It was observed that the average activation energy of these copolymers determined from each of these methods progressively increased as the amount of POPD in the copolymer increased from 10-90%, except for the composition PCz : POPD-30 : 70, because of certain structural implications as discussed earlier.…”

“…Decomposition of polymers is a complex event in which it splits into small free radicals and molecules and even large ones which interact with each other forming amines, aliphatic and aromatic hydrocarbons, phenols and other products. 38,39 Some of these reactions lead to charring. Higher POPD content in the copolymer yielded greater charing because of the presence of larger number of benzene rings in the copolymers.…”

High performance crosslinked polyimide based on main-chain type polybenzoxazine

“…Agag and Takeichi rst reported benzoxazine group with imide structure, though their oxazine ring contained a carbonyl group, and this oxazinone group was not readily polymerizable. 27 Another approach with imide group is the formations of blends. Blends of benzoxazine resin with copolymers of dimethylsiloxane and uorinated imide or ordinary polyimide were prepared to improve the toughness and thermal stability.…”