Luca Bertolla

4 Questions 5 Answers 0 Followers

Questions related from Luca Bertolla

I would like to know if these structures observed with polarized light under cross polarizers might possibly be graphene (mono-, few-layer-) sheets?

Hi everyone. The reported photo refer to graphite flakes exfoliated by a chemo-mechanical method. I would like to know if the observed structures could be identified with few- or mono-layer...

14 November 2022 9,850 4 View

How to regenerate Amberlyst15 cation exchange resin?

Dear all, Can anybody of you give me some tips about usage/regeneration of Amberlyst15 cation exchange resin? (i.e. volume of resin/volume of solution, concentration of the solution to exchange...

29 January 2019 7,877 2 View

How the ionic strength of an alkali silicate solution varies with the increase of solid fraction?

I would like to know if there are any works describing the variation of ionic strength for alkali silicate solutions at high solid concentration (i.e. >50%) i.e. when the suspension turns from...

06 April 2018 5,759 3 View

Can anyone help me with the interpretation of the following rheological behaviour?

In the attached figure is shown the dependence of G' and G" on frequency (ω) for a aqueous suspension of sodium silicate and nanocrystalline cellulose (NCC). I define the solid fraction as ϕ...

18 January 2018 387 3 View