Good day, Karanjit Kapila! Hope you are doing well.
Please, look what I have found in case of your question:
"These results indicate that water retention was improved by the introduction of graphene ... This may result from the fully exfoliated graphene layers creating tortuous paths that reduce the transport rate."
Please, check the following paper:
Article Alkali doped polyvinyl alcohol/graphene electrolyte for dire...
Feel free to mention me in your response in case of any extra questions.
Best of luck in your research!
Yours sincerely,
M. Sc. Vadym Chibrikov
Department of Microstructure and Mechanics of Biomaterials
Institute of Agrophysics, Polish Academy of Sciences