Cyclolinear polyorganosiloxanes

Godovsky, Y. K. Makarova, N. N. Matukhina, E. V. Mesophase Behavior and Structure of Mesophases in Cyclolinear Polyorganosiloxanes. In Silicones and Silicone-Modified Materials, Clarson, S. J., Fitzgerald, J. J., Owen, M. J., Smith, S. D., Eds. ACS Symposium Series 729 American Chemical Society Washington, DC, 2000 pp 98-114. 

The hydrolytic condensation of catalytic polymerisation of di- and trifunctional organohalogensilanes forms cyclolinear polyorganosiloxanes ... 

To obtain fuller picture on the cyclolinear polyorganosiloxanes tacticity effect on formation of crys-talline and mesomorphous states, by N.N. Makarova and her co-workers the PMPCS-4 and PPCS-4 were synthesized and their properties were studied. 

One of the striking recent achievements of organosilicone chemistry is the synthesis of cyclolinear polyorganosiloxanes (CLPOS). The synthesis of the polymers which include two or multistep heterofunctional polycondensation reactions is described in detail therefore, we will not touch the chemical aspects of the polymers... 

Mesophase Behavior and Structure of Mesophases in Cyclolinear Polyorganosiloxanes... 

During the last decade a new family of non-mesogenic mesophase polymers -cyclolinear polyorganosiloxanes (POCS) - consisting of linear chains of repeated siloxane cycles of various dimensions bonded either by only oxygen atoms or by flexible spacers was developed (1-5). The general formula of this class of polymers... 

The analysis of the effects of chemical structure both the siloxane backbone and the organic side groups of cyclolinear polyorganosiloxanes (POCS) on the phase transitions, the ability to form mesophase structures, the temperature range of mesophase existence and the structural evidence has been carried out. 

CYCLOLINEAR POLYORGANOSILOXANES A NEW CLASS OF THERMOTROPIC MESOMORPHIC POLYMERS... 

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