Effects of Cyanuric Acid on Crystallization Behavior, Polymorphism and Phase Transition of Poly(butylene adipate)
writer：Yang Jinjun, Chen Yichun, Qin Songyan, Liu Juan, Bi Chengliang, Liang Rong, Dong Tungalag, Feng Xin
keywords：Crystallization behavior, Polymorphism, Phase transition
source：期刊
specific source：Industrial & Engineering Chemistry Research
Issue time：2015年
Effects of cyanuric acid (CA) on the isothermal and nonisothermal crystallization, morphology, polymorphic crystalline structure, and phase transition on PBA have been investigated systematically by differential scanning calorimetry (DSC), polarized optical microscopy (POM), wide-angle X-ray diffraction (WAXD), and Fourier transform infrared (FTIR) spectroscopy. The nonisothermal crystallization temperature increased upon addition of CA. The crystallization kinetics of isothermal crystallization was quantitatively analyzed. CA is an effective nucleating agent for the enhanced nucleation density and decreased spherulite size of PBA. Addition of CA was favorable for the formation of PBA α modification and accelerated the phase transition from the β modification to the α modification. The mechanisms of nucleation, preferential formation of PBA α-modification, and accelerated phase transition have also been proposed.