By Sarawut Rimdusit, Chanchira Jubsilp, Sunan Tiptipakorn
This publication offers an advent to the original and interesting houses of alloys and composites from novel commercialized thermosetting resins in keeping with polybenzoxazines. Their amazing homes comparable to processability, thermal, mechanical, electric homes in addition to ballistic impression homes of polybenzoxazine alloys and composites lead them to beautiful for numerous functions in digital packaging encapsulation, mild weight ballistic armour composites and bipolar plate in gasoline cells.
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Additional resources for Alloys and Composites of Polybenzoxazines: Properties and Applications
In general, the value of Tg is related to the mobility of the polymer backbone and the crosslink density. Therefore, the lignin polymer could make network structure denser and the mobility of the backbone lower than the neat polybenzoxazine. Recently, Emranul Haque et al.  prepared and studied the polymer alloys of bisphenol-A-based polybenzoxazine and lignin by mixing two components and following with thermal curing. It was revealed that lignin accelerates the polymerization of benzoxazine.
Wang YX, Ishida H (2002) Development of low-viscosity benzoxazine resins and their polymers. J Appl Polym Sci 86:2953–2966 15. Ishida H, Rodriquez Y (1995) Curing kinetics of a new benzoxazine-based phenolic resin by differential scanning calorimetry. Polymer 36:3151–3158 16. Rimdusit S, Bangsen W, Kasemsiri P (2011) Chemorheology and thermomechanical characteristics of benzoxazine-urethane copolymers. J Appl Polym Sci 1321:3669–3678 17. Rimdusit S, Kunopast P, Dueramae I (2011) Thermomechanical properties of arylaminebased benzoxazine resins alloyed with epoxy resin.
The Tg improvement of poly(BA-a) is attributed to the increase in crosslink density of the copolymers determined by dynamic mechanical analysis (DMA). Additionally, the degradation temperatures of the copolymer were remarkably higher than those of the parent components as exhibited in Fig. 14. The residual weight or char yield of the copolymer at 800 °C was as high as ca. 61 %, much higher than that of pure poly(PBA-a). Thus, the obtained copolymer possesses high mechanical properties with excellent fire retardancy.