dear researchers,

I prepared solutions of Polystyrene/ with different ratios of MWCNT

I dissolved ps with DMF and then added MWCNT to the solution using ultrasonication then I measured the viscosity at the constant shear rate for all the prepared solutions using Brookfield cone-plate viscometer the results showed that when increasing the MWCNT concentration will lower the solution viscosity at a constant shear rate ... I need the reasons for this behavior of MWCNT