Cocrystallization behavior of poly(n-docosyl acrylate) with n-docosanoic acid by X-ray and differential scanning calorimetry studies (p 2140-2146)

Cocrystallization behavior of comb-like poly(n-docosyl acrylate) (PDA) with n-docosanoic acid (C22) has been studied by means of differential scanning calorimetry (DSC) and X-ray diffraction (XRD) methods. The DSC curves of blended samples of neat PDA with C22 show the characteristic melting endotherms that correspond to the melting of the crystallites. DSC measurements of PDA/C22 blends also suggest the existence of another crystalline form induced by the addition of the C22. From the XRD measurements, the existence of hexagonally-packed crystalline lattice and the phase behavior of PDA/C22 blends at different mole percent are confirmed. Thermal degradation behavior of PDA and its corresponding blends with C22 is studied by thermogravimetric analysis.