ATRP聚苯乙烯红外光谱研究(英文)

IR studies on polystyrene prepared by ATRP

比较了 ATRP方法制备的聚苯乙烯的红外光谱与传统自由基聚合方法所得的聚苯乙烯红外光谱。发现两类聚苯乙烯的红外光谱基本一致，但 1 440 cm－ 1和 1 490 cm－ 1波数附近的 2个吸收峰的相对强度存在较大的差异。这是由于 ATRP方法所得的聚苯乙烯含有- CH2- Cl形式的化学键，在氯原子的影响下使得 1 440 cm－ 1波数附近的峰明显增强。这一现象也可以部分用于佐证 ATRP反应生成了 C- Cl键。

Polystyrene prepared by atom transfer radical polymerization (ATRP) was studied using infrared spectra. The infrared spectra of polystyrene prepared by ATRP and by conditional free radical polymerization were compared. Results showed that infrared curves for the two kinds of polystyrene had almost the same wavenumbers. But a difference in pair peaks near wavenumbers of 1440 cm-1 and 1490 cm-1 was observed. The difference was attributed to the presence of chlorine atom in polystyrene prepared by ATRP process.