利用二维衰减全反射红外光谱方法,研究了水在聚碳酸酯(PC)薄膜中的扩散过程,发现水的羟基弯曲振动谱带中可以分辨出分别位于1672、1646和1621 cm<'-2>的吸收峰,而羟基伸缩振动谱带中可以分辨出分别位于3560、3425和3255 cm<'-1>的吸收峰,由此可知水分子在聚碳酸酯薄膜中存在3种状态,分别为与羰基形成强、中强氢键作用的水分子和进入PC微孔中的弱氢键作用的水分子.经过二维相关分析得到水分子进入PC薄膜的顺序为首先形成中等强度的氢键,然后形成弱和强2种强度的氢键.
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