A hindered polyetherketone endcapped with p (t butyl)phenol was synthesized. 1H NMR technique was used to seek for the number average molecular weight of this new polymer.

• 以对叔丁基苯酚为封端剂，合成带烷端基的多苯基取代联苯型聚醚酮，测定其1H－NMR谱，根据链中芳环质子共振峰与链端基质子峰积分强度比求解分子量。