I’m trying to model a polymer degradation process with Comsol in which I introduced degradation to my model by defining variable concentration of one of its ionomer blocks.
Then I defined its Density as: “(MW1[g/mol]*cIon1[mol/m^3])+const”.
And for calculating polymer weight loss during degradation process: I defined integration over Density.
cIon1=-R1 (which is degradation reaction)
I made sure that degradation reaction is positive by (R1=max(esp^2,r1))
However as I integrate Density on my domain it decreases and then increases after certain time!!!! Please help!!
Then I defined its Density as: “(MW1[g/mol]*cIon1[mol/m^3])+const”.
And for calculating polymer weight loss during degradation process: I defined integration over Density.
cIon1=-R1 (which is degradation reaction)
I made sure that degradation reaction is positive by (R1=max(esp^2,r1))
However as I integrate Density on my domain it decreases and then increases after certain time!!!! Please help!!