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用ＤＳＣ观测了溶液浇铸ＰＭＭＡ薄膜的热焓松弛行为，对物理老化、溶液浓度以及溶剂极性对其热焓松弛行为的影响进行了详细的讨论，其特征用凝聚缠结的观点予以解释。
The enthalpy relaxation behavior of solution cast PMMA films was observed by DSC, and the effects of physical aging, solution concentration and solvent polarity on their enthalpy relaxation behavior were discussed in detail. Their characteristics were explained by the view of cohesion and entanglement.