Crystalline phase comb-shaped polymers

Chowdhury, M.A.J., Ihara, H., Sagawa, T., and Hirayama, C., Retention versatility of silica-supported comb-shaped crystalline and non-crystalline phases in high-performance liquid chromatography, J. Chromatogr. A, 877, 71, 2000. Chowdhury, M.A., Ihara, H., Sagawa, T., and Hirayama, C., Retention behaviors of polycyclic aromatic hydrocarbons on comb-shaped polymer immobilized-silica in RPLC, J. Liq. Chromatogr. Relat. TechnoL, 23, 2289, 2000. 

Study of the structure and physicochemical properties of comb-shaped polymers in dilute solutions, gels, and the solid phase genoalized in [8] permitted describing the structural features of this special class of branched polym systems in detail within the framework of the so-called rotational-crystalline state, a variety of the LC state. 

The possibility of synthesizing a large number of comb-shaped thermotropic polymers with a different structure of the main chain [31-35], different mesogenic fragments [36-41], and a different type of connection to the main chain provides broad opportunities for their investigation [1, 2, 19, 31, 43-50]. The presence of chemical groups which cause the formation of the liquid-crystalline phase in their side chains, while the main chain of the molecule can be flexible, is a basic structural feature of these comb-sh )ed mesogenic macromolecules. 

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