Abstract
Polybenzoxazine was synthesized by using bisphenol A, formaldehyde and diamine as precursor via condensation reaction. Triethylenetetramine was used as diamine precursor. Polybenzoxazine was characterized by FTIR technique in order to confirm the obtained polybenzoxazine. The ratio of poly(D,Llactic acid)/polybenzoxazine (Mw = 10,000 and 20,000 g/mol) was 0:100, 1:99, 3:97 and 5:95, respectively. The poly(D,L-lactic acid)/polybenzoxazine films were characterized by using Scanning Electron Microscope (SEM). The results showed homogenous and smooth films. Thermal stability of poly(D,L-lacticacid)/polybenzoxazine films was better than pure polybenzoxazine film. Moreover, 3:97 ratio of polybenzoxazine mixed with poly(D,L-lactic acid) (Mw = 20,000 g/mol) film showed good tensile strength,because the stress at break was 24.06 ± 7.99 when determined by Universal Tenting Machine. It was concluded that poly(D,L-lactic acid) improved the property of the polybenzoxazine film.
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