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中文摘要：
通过使用乌式黏度计和差示扫描量热仪,分别测定了聚苯乙烯的特性黏度[η]和玻璃化转变温度（Tg）,并通过实验数据的回归,得到了其数均相对分子质量（Mn）与Tg的关系。为聚苯乙烯的简易制备和Tg测试提供了一种实用方法。
英文摘要：
The intrinsic viscosity [η] and the glass transition temperature（Tg） of polystyrene were determined respectively by using Ubbelohde viscometer and differential scanning calorimeter, and the relationship between its number-average relative molecular mass（Mn） and Tg was obtained through regression of experimental data. A practical method is provided for simply preparing polystyrene and testing Tg.
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