Poly(ethylene 2,6-naphthalate) blends containing a phenylphosphonic acid salts compound with a highly enhanced crystallization rate

In view of the low crystallization rate of poly(ethylene 2,6-naphthalate) (PEN), in order to elevate its crystallization rate, a phenylphosphonic acid salts compound (TMC-210) with efficient nucleation ability was acted as nucleating substance in this study. Therefore, the PEN/TMC-210 blends were prepared by melt blending. The variation of crystallization peak temperature, nucleation efficiency, and density of crystal nucleus reflect the improvement of PEN crystallization rate, and conduct an in-depth model analysis of non-isothermal and isothermal crystallization. Although the crystal structure of PEN has not been changed, the PEN/TMC-210 blends appeared new diffraction peaks in x-ray diffraction spectrogram, which may attribute to the agglomeration of TMC-210 particles. The new stress-whitening on the impact fracture surface of the PEN/TMC-210 blends confirm the enhancement of PEN tenacity.