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本文用PLM及DLI法研究了聚对苯甲酰胺及聚对苯甲酰胺/尼龙6的硫酸溶液由液晶态转变为非液晶态过程的相转变动力学;以及由非液晶态转变为液晶态的液晶化动力学。在由液晶态转变为非液晶态的过程中,PBA体系的转变由三个阶段组成,而PBA/尼龙6体系仅一个阶段,每个阶段的相变级数与活亿能,都可由动力学方程求得。在相同的相转变温度下,PBA体系的转变速率要比PBA/尼龙6共混体系快。研究结果还表明,PBA体系以及共混体系的液晶化过程数据用Avrami公式处理,线性关系很好。PBA体系的液晶化过程与PBA/尼龙6体系也不同,PBA体系也有三个阶段,而共混体系仅有一个。不同的液晶成核条件及液晶化温度都可使n、k值有规律地变化。
In this paper, PLM and DLI were used to study the phase transition kinetics of poly (p-benzamide) and poly (p-benzamide) / nylon 6 solution in sulfuric acid from liquid crystal to non-liquid crystal, and from non-liquid to liquid crystal Liquid crystal kinetics. In the process of transition from liquid crystal to non-liquid crystal, the transition of PBA system consists of three stages, while the PBA / nylon 6 system is only one stage, and the number of phase transitions and viability of each phase can be determined by kinetics The equation is obtained. At the same phase transition temperature, the transition rate of PBA system is faster than PBA / nylon 6 blend system. The results also show that the liquid crystalline process data of PBA system and blend system are processed by Avrami formula and the linear relationship is good. PBA liquid crystal process and PBA / nylon 6 system is also different, PBA system also has three stages, and only one blend system. Different liquid crystal nucleation conditions and liquid crystal temperature n, k values can be regularly changed.