苯乙烯(ST)-二乙烯基苯(DVB)共聚物广泛应用于离子交换树脂及色谱固定相等,由于其交联度与产品性能直接相关,因此需要可靠、简易、快速测定交联度的方法。目前,工业生产中常用投料比来表示交联度,也用溶胀法来确定,这两种方法都有一定的局限性,且麻烦费时。由于裂解气相色谱不受样品形态限制,不需任何处理就可直接快速地获得结果,因此有不少报导用裂解气相色谱法来测定交联度。在一定范围内,交联度和特征碎片的相对产率之间呈线性关 Styrene (ST) -divinylbenzene (DVB) copolymers are widely used in ion exchange resins and chromatographic fixtures. Because of their direct dependence on product properties, there is a need for a reliable, simple and rapid method of determining the degree of crosslinking . At present, the commonly used feed ratio in industrial production to indicate the degree of crosslinking, also used swelling method to determine, both of these two methods have some limitations, and time-consuming and cumbersome. Since pyrolysis gas chromatography is not limited by the sample morphology, results can be obtained directly and quickly without any treatment. Therefore, there are many reports on the determination of the degree of crosslinking by pyrolysis gas chromatography. Within a certain range, the degree of cross-linking and the relative yield of characteristic fragments are linearly related