溶液浇铸法制备氘代聚乙烯薄膜
Preparation of deuterated polyethylene films by solution-casting
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摘要: 采用改进的溶液浇铸法，用氘代聚乙烯为原料,制备了厚度为100, 200, 400 μm的氘代聚乙烯薄膜。研究了溶液温度、干燥温度、真空加热温度及时间等因素对成膜性、薄膜均匀性和透明性的影响，确定了最佳工艺条件：溶液温度120～130 ℃，干燥温度80～100 ℃，加热温度120 ℃，加热时间1 h。3维视频显微镜和原子力显微镜表征结果表明:制备的薄膜透明性较好,厚度较均匀;薄膜表面起伏较小。Abstract: Deuterated polyethylene films with good transparency and uniform thickness were been prepared using improved solution-casting method. The effects of solution temperature, evaporation temperature, temperature and time of vacuum heating on the thickness uniformity and transparency of film were explored. The obtained optimum solution temperature, evaporation temperature and time of vacuum heating are 120～130 ℃， 80～100 ℃， 120 ℃，1 h ， respectively. The surface morphologies and thickness uniformity of the film were characterized by a KH-3000VD microscope and an AFM.
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