Ammonium Polyphosphate Crystalline Transformation from Form II to Form V
Ammonium polyphosphate (APP) is an effective intumescent flame retardant, it has different crystalline forms and therefore, different application. The crystalline transformation from form II to form V was measured. The results were informative for controllable preparation ammonium polyphosphate in industrial production.
G. S. Liu and X. Z. Duan, "Ammonium Polyphosphate Crystalline Transformation from Form II to Form V", Advanced Materials Research, Vols. 228-229, pp. 832-835, 2011