SYNTHESIS AND CHROMATOGRAPHIC STUDY OF FU LLERENE-CONTAINING POLYSTYRENES

Starlike polymers were synthesized by the reaction between poly(styryl lithium) (PSL) and fullerene. The composition of the reaction products was studied by the methods of thin-layer and gel-permeation chromatog raphy, and by their combination (two-dimensional orthogonal chromatogr aphy). The effects of alteration in the order of reagent mixing and va riation of the PSC : fullerene molar ratio (from 0.25 to 3) on the com position of products were studied. When a fullerene solution is added to PSL, the product is mostly composed of two components, one of these comprising a fullerene linked with a single PS chain, and the other, a fullerene linked with several (not less than 6) PS chains. For the r everse order of mixing, the product comprises a series of fullerene co mpounds with various contents of PS chains. It was found that fulleren e-containing polymers are unstable when stored without a solvent at ro om temperature: qualitative changes were observed in the composition o f products, which were caused by the oxidation and cross-linking.