How to interpret the increase of water contact angle in polymer / graphene oxide ?

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Standard curve of H2O2?

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Ahmed Abdel-Karim

It is may be attributed to the increase in surface roughness.

Imad Disher

Try polishing the sample before the contact angle test.

Vladimir A. Basiuk

The question is too general. Chemical structure of the polymer and the procedure to prepare the composite are important factors to consider.