ABSTRACT In this study, 9-anthracenemethyl methacrylate (AMMA) and styrene (St) as monomers and benzoyl peroxide as an initiator were used to synthesize P(St-co-AMMA), a macromolecule tracer with a fluorescence effect, via free radical copolymerization. A fluorescent online detection device was built on the basis of the principle of fluorescence online detection by using the single-screw extrusion platform of a torque rheometer to explore the effect of the amount of macromolecular tracer and screw speed on the residence time distribution of polystyrene in single-screw extrusion. Fourier transform infrared spectroscopy, 1H-NMR, thermal stability, fluorescence properties, and rheological properties show that the resulting product P(St-co-AMMA) has a degree of thermal stability, fluorescence, and rheological properties similar to polystyrene, so this product can be used to characterize the residence time distribution during single-screw extrusion. The amount of macromolecular tracer P(St-co-AMMA) does not affect the residence time distribution of polystyrene during single-screw extrusion processing, meanwhile, the minimum residence time decreases and the residence time distribution becomes narrow as the screw speed increases, that is, the axial mixing capacity of the single-screw extruder decreases as the screw speed increases.

中文翻译：

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具有荧光效应的高分子在聚合物加工中的制备及应用

摘要 本研究以 9-蒽甲基丙烯酸甲酯 (AMMA) 和苯乙烯 (St) 为单体，过氧化苯甲酰为引发剂，通过自由基共聚反应合成了具有荧光效应的高分子示踪剂 P(St-co-AMMA)。 . 基于荧光在线检测原理，利用扭矩流变仪的单螺杆挤出平台，搭建了荧光在线检测装置，探讨了高分子示踪剂用量和螺杆转速对聚苯乙烯停留时间分布的影响。单螺杆挤出。傅里叶变换红外光谱、1H-NMR、热稳定性、荧光性质和流变性质表明所得产物P(St-co-AMMA)具有与聚苯乙烯相似的热稳定性、荧光性和流变性质，因此该产品可用于表征单螺杆挤出过程中的停留时间分布。大分子示踪剂P(St-co-AMMA)的用量不影响聚苯乙烯在单螺杆挤出加工过程中的停留时间分布，同时随着螺杆转速的增加，最小停留时间减少，停留时间分布变窄，即即单螺杆挤出机的轴向混合能力随着螺杆转速的增加而降低。