Polymers Crosslinked polymers
What indicators characterize the parameters of the mesh of crosslinked polymers?
I think tensile strength test may be a great help in this question. Certainly there must be a relation between amount if crosslinks and material strength
You correctly noted that the bond must be present and therefore the breaking strength or cross-link density of the cross-linked polymer depends on the functionality of the cross-linking nodes, which is determined by the number of elastically active chains.
Otherwise there would be no durable material.
@damiryagudin Crosslinked polymers doesn't melt, right? So we can't test these material for temperature of glass transition, if I'm not mistaken
@amalgama That's right, of course we can't. There is no transition to a viscous state in the cross - linked polymer.
And what other indicators are used to characterize grids?
Maybe density can show the amount of links
Actually scanning electron microscopy might give quite informative picture if you were to use an appropriate scale
Why not, I think maybe density is one of the indicators
Yes, or confocal laser scanning microscopy will completely show a three-dimensional image
In what cases is it possible for cross-linked polymers to exhibit highly elastic properties?
@damiryagudin Probably if the material is lightly crosslinked and the links are long