Template polymerization polycomplexes

The polycomplex obtained by template polymerization of polyacrylamide with uracil groups onto template, from polyacrylamide with adenine groups, was found to be very stable compared with the polymer complex which was formed by mixing both polymers... 

Template polymerization is the only way to produce polycomplexes and polycomplex composites in which one of the polymer components is insoluble and the polycomplex cannot be obtained by mixing solutions of polymers previously prepared. In this way, interpenetrating networks were obtained. 

The polycomplexes obtained by template polymerization of methacrylic acid or acrylic acid in the presence of poly(N,N,N, N - tetramethyl-N-p-xylene-ethylenediammonium dichloride) were used for spinning of fine fibers 5 to 50 pm in diameter. The fibers are soluble in water but become stable after thermal treatment at about 80°C. The polycomplex with regular structure, obtained by template polymerization, is expected to be of considerable interest for textile industry. 

A similar procedure was described by Eboatu and Ferguson. An object of analysis was the complex obtained by template polymerization of acrylic acid in the presence of poly(vinyl pyrrolidone). The polycomplex was dispersed in dry benzene and treated with diazomethane. The insoluble portion was filtered. The filtrate containing poly(methyl acrylate) was concentrated and finally dried. The insoluble fraction was scrubbed with methanol to extract polyCvinyl pyrrolidone). The residue was further washed with methanol and then dried. These three portions were characterized by IR spectroscopy. It was found that only about 70% separation of the complex is achieved. The occurrence of inseparable portion is attributed to a graft copolymer formation. For the separated... 

Template polymerization is a convenient way to produce polycomplexes and polycomplex composites, polymer blends, and interpenetrating networks or networks with nonrandom distribution of cross-linking points. 

The polycomplexes obtained by template polymerization have been used for spinning fibers (27). 

Another form of application connected with properties of template polymerization products is imaging,which is based on the formation of insoluble polycomplexes or cross-linked polymers. A thin coating of a polymer used as template in a mixture of monomer and photoinitiator is applied onto a transparent film carrier. On UV irradiation through a mask, the exposed parts become insoluble polycomplex or crosslinked copolymer. The imexposed areas are removed by washing and immersion in a dye bath produces the final image. 

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