Reinforcement of poly(amide imide) containing N-trimellitylimido-Lphenylalanine by using nano a-Al2O3 surface-coupled with bromo-flame retardant under ultrasonic irradiation technique

Reinforcement of poly(amide imide) containing N-trimellitylimido-Lphenylalanine by using nano a-Al2O3 surface-coupled with bromo-flame retardant under ultrasonic irradiation technique
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