Effects of Cyanuric Acid on Crystallization Behavior, Polymorphism, and Phase Transition of Poly(butylene adipate)
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- 作者：Jinjun Yang ; Yichun Chen ; Songyan Qin ; Juan Liu ; Chengliang Bi ; Rong Liang ; Tungalag Dong ; Xin Feng
- 刊名：Industrial & Engineering Chemistry Research
- 出版年：2015
- 出版时间：August 26, 2015
- 年：2015
- 卷：54
- 期：33
- 页码：8048-8055
- 全文大小：595K
- ISSN：1520-5045
文摘
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 伪 modification and accelerated the phase transition from the 尾 modification to the 伪 modification. The mechanisms of nucleation, preferential formation of PBA 伪 modification, and accelerated phase transition have also been proposed.