摘要
研究了旋转反应器内的固相缩聚动力学,探究了固相缩聚反应温度对BAPC摩尔质量和转化率的影响。利用建立的动力学模型,计算出BAPC。(M。=2 962 g/mol,x0=0.957)、BAPC:(Mn=6 135 g/mol,x0=0.979)和BAPC,(Mn=8 236/mol,x0=0.984)三种摩尔质量的预聚体在453~483 K下的表观反应速率常数,按照Arrhenius方程式模拟出其表观活化能分别为61.49、55.22和32.60 kJ/mol,随着预聚体摩尔质量的增大,表观活化能降低,固相缩聚反应更容易发生。
A mathematical model was developed for the solid state polymerizationbisphenol-Apolycarbonate (BAPC) in a rotary drum-type reactor. The effect of reaction temperature on the molecularweight and conversion of BAPC were analyzed. By the built mathematical model,constants (k) for three performed polymers of BAPC1 (Mn =2 962 g/mol, xo =6 135 g/mol, x0=0.979) and BAPC3 (Mn=8 236 g/mol, x0=0.984) werethe Arrhenius equation, the ctivation energy (Ea) of BAPC1, BAPC2 and BAPC32.60 kJ/mol, respectivelyactivation energy decreases and the forward reaction rate0.957), BAPC2 (M.=determined. According to3 were 61.49, 55.22 andWith the increasing in molecular weight of the performed polymer, thethe solid state polymerization becomes more prone to react.
出处
《塑料工业》
CAS
CSCD
北大核心
2016年第5期26-30,共5页
China Plastics Industry
关键词
双酚A型聚碳酸酯
固相缩聚
反应动力学
活化能
Bisphenol-A Polycarbonate
Solid State Polymerization
Reaction Kinetics
Activation Energy
作者简介
常雪松,女,1988年生,在读博士生,研究方向为固相缩聚合成双酚A型聚碳酸酯。cxsl3671787624@126.com
hstian@ ecust, edu. Cn