INFLUENCE OF THE ASSOCIATION OF RIGID AND FLEXIBLE MACROMOLECULES ON THEIR COMPATIBILITYA. V. Subbotin and V. G. Kulichikhin UDC 532.74;532.783 Consideration is given to a melt of rigid rod-like macromolecules whose side main-chain links are capable of associating with active end groups of flexible chains (it is assumed that each flexible chain has only one active end group), thus forming associated complexes. It is shown that with decrease in the temperature the association facilitates substantial improvement in the compatibility of rigid and flexible molecules in the melt. A. V. Topchiev Institute of Petrochemical Processing, Russian Academy of Sciences, Moscow, Russia; email: email@example.com. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 76, No. 3, pp. 4-8, May-June, 2003. Original article submitted October 4, 2002.