Solubility parameter in Synthia

Dear All,

I would like to ask the solubility parameter caculated by Synthia.

Recently, I am studying the paper using DPD module for CNT-PMMA composite. [Molecular Simulation, Vol. 31, No. 2–3, 15 February–15 March 2005, 143–149]

However, when I calculated the solubility parameter Using Synthia module, I found a deviation from the value in the reference. (my calculated value = 17.68 (van Krevelen) and 20.15 (Fedor), but value in reference = 18.9)

Do you have any idea about this result?

One possible reason seems that the value in reference is the average one of 17.68 (van Krevelen) and 20.15 (Fedor), but I am not sure.

In addition, what is the difference of the solubility parameter from 'van Krevelen' and 'Fedor'?

Best regards,