Abstract
The effect of the conditions of chemical crosslinking on the nechanical properties and supermolecular structure of gelatin gels, has been investigated. It is shown that a substantial increase in the elasticity modulus of the gel cannot be obtained by chemical crosslinking in solution. The prevention of formation of helices as a result of formation of chemical bonds in solution, hinders gel formation by formation of intermolecular bonds, so that the gel has no supermolecular structure. On the other hand, chemical crosslinking of a gel previously formed by intermolecular bonds, increases its elasticity modulus considerably. The relationship found between the structure and properties of crosslinked gelatin gels on the one hand, and the conformation of the crosslinked macromolecular on the other, can be of general significance for polymeric systems crosslinked in solution.
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