Figure 1: ATR-500/Mi?ATR crystal plate (Upper right: Prism and liquid cell)Characterized by wavelengths longer than the mid-infrared region, the far-infrared region is also referred to as the terahertz region. In recent years, this region has been used to evaluate crystal polymorphs for pharmaceuticals and semiconductor device materials, as well as for archaeological research applications, including the study of inorganic pigments. Light in the far-infrared region (terahertz waves) corresponds to hydrogen bonding and Van der Waals forces believed to hold the key to an understanding of the functional
成型药品泡罩的透湿性能必要性探讨与测试方法介绍摘要:药品的泡罩包装又称为PTP包装(press through packaging),因其具有药品稳定性好,易于携带,便于少剂量和系列化包装而被广泛应用于片剂、丸剂、栓剂、胶囊等固体制剂的药品。通过进行整体药品泡罩透湿性能检测,比对三种成型泡罩的阻湿性可以发现,不是所有泡罩基材在成型后都能很好地保持阻隔性能,生产、流通中存在很多复杂的因素会导致成型泡罩的透湿量变大。事实证明,我们不能从薄膜或硬片的水蒸汽透过率(WVTR)来判定成型泡罩防潮性的优劣。与此同时,药品泡罩的水蒸气透过率随环境温度的升高而增大,因而检测成型药品泡罩的透湿性是非常必要的。关键词:药品泡罩,PTP,防潮,成型,WVTR