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2. General properties of resins
2.1 Cross-linking rate and backbone porosity
2.1.1 The need for cross-linking
Increasing the degree of cross-linking (percentage of DVB in the monomer, by mass) results in a harder, less elastic resin. More cross-linked resins are more resistant to oxidizing media, which tend to uncross-link the polymer. However, above 10-12% DVB, the structure becomes too rigid and compact. Activation becomes difficult, as access to the bead core is hampered by the density of the backbone.
In addition,...
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General properties of resins
Ion exchange reactions
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