As water diffuses into silica glass, it reacts with the silica network to generate hydroxyl groups that cause a volume swelling of the glass. We discuss this effect quantitatively for cases in which hydroxyl groups were produced either by gamma‐irradiation of hydrogen‐saturated silica glass or by high‐temperature diffusion of water into silica glass. From volume swelling measurements, the partial molar volume of hydroxyl groups for both treatments is determined to be 7.5 cm³/mol. Since two moles of SiOH are generated for each mole of water reacting with the glass, the reaction volume, , is 15.0 cm³/mol.

中文翻译：

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摩尔体积的SiOH由膨胀菌株估计

当水扩散到二氧化硅玻璃中时，它与二氧化硅网络反应生成羟基，从而导致玻璃体积膨胀。对于通过氢饱和的石英玻璃的伽马射线辐照或高温将水扩散到石英玻璃中而产生羟基的情况，我们将定量讨论这种效应。从体积溶胀测量，两种处理的羟基的部分摩尔体积确定为7.5cm ³ / mol。由于与玻璃反应的每摩尔水产生两摩尔的SiOH，因此反应体积为15.0cm ³ / mol。