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love6417

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[交流] 氧化石墨烯和UHMWPE混合制备复合材料

In a typical synthesis, powdery GO and UHMWPE (6 g)
were firstly added into toluene solvent (290 ml). After
ultrasonic treatment using an ultrasonic pole at 600 W for
1 h in an ice bath, the homogeneous mixture was placed
into a round bottomed flask in a oil bath, heated up to
130℃, and kept at this temperature for 3 h under stirring to
accelerate mixing. Then, the mixture was dried at 70C in
vacuum for 12 h to remove the toluene.
氧化石墨烯和UHMWPE混合制备复合材料，我几个问题想学习下
1.溶剂toluene的作用，就是为了分散吗，其他溶剂行不行
2. 超声为什么要在 in an ice bath，
3.超声后为什么又要在 oil bath中加热到130℃
这个目的不就是为了混合吗，直接在溶剂搅拌混合，干燥不就行了吗，谢谢指导

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