悬挂双键行为是自由基交联共聚反应的关键,除参与分子间交联反应外,还可参与环化、初级分子内交联、次级分子内交联等反应。环化反应定义为二(多)烯自由基“回咬”同一单体链节中的悬挂双键的反应,初级分子内交联反应指自由基“回咬”同一基链上的悬挂双键的反应,次级分子内交联反应指自由基“回咬”同一分子中其它基链上的悬挂双键的反应。 由于二烯用量极少。通常很难定量测定悬挂双键浓度。很少有定量研究悬挂双键行为的实验报道,Lantin用超导核磁共振仪直接测定了甲基丙烯酸甲酯-乙二醇二甲基丙烯酸酯体 Suspension double bond behavior is the key to radical cross-linking copolymerization, in addition to participating in the intermolecular cross-linking reaction, but also can participate in the cyclization, primary intramolecular cross-linking, secondary intramolecular cross-linking and other reactions. The cyclization reaction is defined as the reaction of di- (poly) ene radicals “back-bite” with dangling double bonds in the same monomer chain. The intramolecular first-order cross-linking reaction refers to the radical “back bite” of dangling double bonds on the same base chain The intramolecular cross-linking reaction refers to the reaction of free radicals “back-bite” with the dangling double bonds of other base chains in the same molecule. As a very small amount of diene. It is often difficult to quantify the concentration of doubly linked doubles. Few quantitative studies of double bond hanging behavior reported in the experiment, Lantin superconducting nuclear magnetic resonance spectroscopy direct determination of methyl methacrylate - ethylene glycol dimethacrylate