Hi all,

To model a nanocomposite, first, I imported 2d reinforcement and created a cell (via "Build Crystal tool") around it. Then, with using the "amorphous cell tool", I "packed" the polymer chains to surround it. 

The problem is that I need to use "cvff" force field for the polymer but with this procedure, I'm not allowed to do such a thing (apparently, the mentioned force field doesn't consider "Boron" atoms at all, while my 2d model contains it). It is worthy of mention that I currently use "dreiding" force field to model my nanocomposite.

On the other hand, I've seen some literatures, which used cvff force field for their polymers and model their nanocomposite despite that their models contain boron atoms (https://doi.org/10.1016/j.ijheatmasstransfer.2018.05.149).

I wonder if someone can help me figure it out how can I do the same thing? (in attachment my nanocomposite model has been embedded)

thank you in advance