Poly vinylopyridines as Templates

An extensive literature is devoted to polymerization of methacrylic acid onto poly(2-vinylpyridine). The influence of template concentration, template tactici-ty, initiator concentration, monomer concentration, and temperature were studied in detail. The majority of findings deal with kinetics of the process which is considered in Chapter 8. [Pg.45]

The influence of the solvent on the process is very important. Polymerization of methacrylic acid onto poly(2-vinylpyridine) template was studied hy carrying out the process in solvents with different polarity, such as dimethylsulphoxide, DMSO, [Pg.46]

4- dioxane and DMF. The weak solvent-monomer interaction in the case of [Pg.46]

4- dioxane leads to increasing polymerization rate, while in strong polar DMSO, polymerization proceeds as for a blank reaction (without template). It is consistent with the fact that poly(methacrylic acid) and poly(2-vinylopyridine) do not form complex in this strongly solvating medium. [Pg.46]

A template mechanism was also proposed for spontaneous polymerization of propargyl chloride in the presence of poly(4-vinylpyridine). The reaction consists of partial (6-8%) alkylation of P4VPy by propargyl chloride which leads to stable complex P4VPy with monomer and then to polymerization. The product obtained contains a conjugated bond system formed by opening triple bonds in the monomer according to reaction [Pg.46]

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