制备十八烷基三甲基氯化铵(OTAC)复配γ-氨丙基三乙氧基硅烷(KH550)改性蒙脱土(MMT),利用XRD、ICP、FTIR、TG和SEM对改性前后的蒙脱土进行表征.结果表明MMT层间距的扩大主要是由于OTAC与MMT层间阳离子交换的结果,质子化的KH550亦能与MMT进行离子交换但不影响OTAC对MMT的有机改性,而且KH550能与MMT表面羟基反应形成化学键而接枝于MMT表面.
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