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OALib Journal期刊
ISSN: 2333-9721
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纳米pd--ga/pmma复合体系界面的有序结构
Keywords: 复合材料,纳米钯镓,聚甲基丙烯酸甲酯,超声,界面结构,纳米复合物
Abstract:
？在不使用引发剂和还原剂条件下,用超声辐射工艺双原位合成了纳米钯镓/聚甲基丙烯酸甲酯(pmma)复合物。xrd和uv--vis显示,超声还原生成的单质钯和超声粉碎的单质镓在pmma基体中不是简单的物理分散,而是在生成钯镓合金ga$_{5}$pd/pmma复合物的同时既有纳米钯又有纳米镓与pmma形成复合物;xps表明,镓失去了部分外层电子,一部分流向钯生成合金ga5pd;一部分与聚合物酯基中的氧配位产生相互作用。tem结果表明,正是由于纳米金属与聚合物之间的相互作用,在相界面处pmma形成了各向异性有序结构。
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