I want to assess the incorporation of polymer A to a crosslinked polymer B creating a crosslinked polymer B/ polymer A blend so do I set the crosslinker concentration constant according to total polymeric content or should I set it according to the polymer B wt% in each blend composition (50:50, 60:40, 70:30, etc.)?
Reem Hazem Elaasar Dear colleague! As follows from the text of your question, your task is to obtain a "snake in a cell" composite. Whatever the ratio between linear and network copolymer you take, the actual content of linear copolymer will be less. The more linear polymer you take, the less it will bind to the network one. From topological calculations of a linear polymer, no more than 34% must be taken, otherwise the “snake” will crawl out of the network.
It should be taken into account that during polymerization during the synthesis of a network polymer, the linear polymer has a significant effect on the kinetics of the process. The linear polymer separates into a separate phase, forming pores in the cross-linked polymer. I have researched such polymers, check out my work.
I would do both. Make one set of samples
where the ratio of cross linker to B is constant, and one where ratio of cross linker to A + B is constant.
are your precursor polymers compatible - do A and B form a blend before rxn or do they phase separate? Most polymers phase separate but some form blends. If they phase separate, you have to keep your B percent high enough so the B phase is continuous through your sample.
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