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jjfengnju

金虫 (正式写手)

[求助] 有PVP存在,为啥随着温度的升高,分散性还会随着变差? 已有1人参与

合成Pt纳米材料,有PVP存在,为啥随着温度的升高,分散性还会随着变差?0度最好,温度越高越差?如何解释?
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peterflyer

木虫之王 (文学泰斗)

peterflyer


【答案】应助回帖

感谢参与,应助指数 +1
温度升高,布朗运动剧烈,粒子之间的碰撞几率增加,也就增加了团聚的几率,当然分散性变差;此外,温度的增加也会改变Ph值,引起颗粒的表面电极电位发生改变也是一个原因。
2楼2013-12-23 13:11:47
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