When the deformed drop retraction method (DDRM) is used to measure interfacial tension, the elastic relaxation of polymer chain should be faster than the ellipsoidal droplet retraction.

• 摘要在利用形变液滴回缩法(DDRM)测量了分子共混体系界面张力的过程中，要求椭球液滴内高分子链应力松弛速度远快于椭球的回缩速度。