Different kinds of plasticizer were chosen to add to the films and DSC was taken, it proved that Tg had most decreased when triethyl citrate was added.

• 选择了不同的增塑剂加入膜后进行差热分析,以三醋酸甘油酯作为增塑剂可以对膜的Tg有最大程度的降低。