Biopolymer grafting reactions, monomers

The first type includes reactions in which the polymer acts as a carrier for the substrate. The product remains attached to the support while the by-products, excess of reagents, and solvents all remain in solution and can be removed by filtration. The synthesis may involve a single step (such as acylation of an enolizable polymeric ester), or it may be a sequential synthesis of biopolymers, where the successive addition of monomers is carried out as a graft on the basic polymer chain. The last stage in such a synthesis involves cleavage of the product from the polymer backbone. 

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