【摘要】 合成了分别含Ｌｉ￣＋，Ｎａ￣＋，Ｋ￣＋和Ｍｇ￣（２＋），Ｃａ￣（２＋），Ｂａ￣（２＋）的６种乙丙三元胶（ＥＰＤＭ）磺酸盐离聚体，溶解性试验反映出固体中存在聚集引起的离子交联，红外光谱表明金属离子与的相互作用为Ｌｉ￣＋＞Ｎａ￣＋＞Ｋ￣＋和Ｍｇ￣（２＋）＞Ｃａ￣（２＋）＞Ｂａ￣（２＋）及Ｍ￣（２＋）＞Ｍ￣＋，通过动态力学分析，讨论了离聚体中离子相互作用对离子聚集和橡胶平台区温度范围的影响规律。更多还原

【Abstract】 The ionic interaction in sulfonated EPDM ionomers containing Li￣+,Na￣+,K￣+,Mg￣(2+), Ca￣(2+)and Ba￣(2+) has been investigated in solid state。 The existence of ionic cross-linking due to aggregation of M￣+ groups is detected by solubility tests.The infraredspectra(IR ) show that the interaction between sulfonate anion and metal cation decreas-(Institute of Polymer Science ,Zhongshan University,Guangzhou 510275)es withionic radiibut increases with valence。The dynamic mechanical analysis(DMA)shows that the width of the rubber platform decreases in the order of Li￣+>Na￣+>K￣+,Mg￣(2+)>Ca￣(2+)>Ba￣(2+) and M￣(2+)>M￣+。 Both IR and DMA indicate that the ionic interactionin sulfonated EPDM ionomers depends on the charge density on cation sulface.更多还原