对聚对苯二甲酸乙二醇酯/聚2，6-萘二甲酸乙二醇酯（PET/PEN）共混复合瓶坯的成型温度和时间对瓶子表观和微观结构的影响进行了研究。使用扫描电镜、质子核磁共振（1H-NMR）和透光率测定仪等方法，对PET/PEN共混复合瓶的微观结构、酯交换率和透明度进行了表征。结果表明，在300 ℃下，PET和PEN共混熔融时间为180 s，制得的PET/PEN共混复合瓶具有很好的透明度；并且，其水蒸气透过量较PET瓶降低了19.1%，阻湿性优于食用油常用的PET瓶。

The effect of temperature and time of injection molding for PET/PEN blend parison on the structure of bottle were studied. The microstructure, ester group exchanging rate and transparency of PET/PEN blend bottle were analyzed by using SEM, 1H-NMR, and light transmittance meter. The result showed that PET/PEN blend bottle’s transparency is higher when the injection molding process parameters are molded temperature 300 ℃ and period 180 s; water vapor transmission rate decreased by 19.1% compared to original PET bottle; moisture barrier property is better than PET bottle for edible oil.