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By J. C. Salamone, J. S. Riffle (auth.), J. C. Salamone, Judy S. Riffle (eds.)

of Polymer Chemistry, Inc. of the yankee Chemical Society held its The department fifteenth Biennial Polymer Symposium at the subject, "Advances in New Materials," November 17-21, 1990, on the Pier sixty six inn and Marina in toes. Lauderdale, Florida. a 3 and one­ part day software used to be provided by way of famous leaders in significant parts of recent polymeric fabrics. the subjects of the Biennial Symposium incorporated new excessive functionality polymers, polymers for digital purposes, electrically undertaking polymers, nonlinear optics, new polymer platforms, and polymers derived from organic media. those are the topic components of this quantity of "Contemporary subject matters in Polymer Science". The cause of the Symposium was once to target contemporary advances in polymeric fabrics. The technical periods have been complemented by way of an preliminary poster consultation which augmented some of the technical periods. a selected spotlight of the assembly was once the presentation to Professor Michael Szwarc of the 1990 department of Polymer Chemistry Award through Dr. J. L. Benham, Chairman of the T Aymer department. in the course of his Award tackle, Professor Szwarc defined how he had develop into a polymer chemist and later built "living polymers." unquestionably, Professor Szwarc has made a profound contribution to the polymer box, which has yielded many new sorts of residing polymerization.

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8 Formation of urethanes in this manner under normal interfacial conditions to form high MW polymer would have minimal effects on the properties of the polymer and may not even be observed However, urethane formation in the cyclization reaction would produce a capped oligomer which cannot cyclize, therefore leading only to polymer. In this manner, a fraction of the amine used in the reaction could produce a significant level of unwanted high MW polymer. Evidence for the formation of urethanes during the preparation of cyclics will be presented later in this paper.

Int. En~. , 17:569 POLY(ENAMINONITRILES): NEW MATERIALS WITH INTERESTING PROPERTIES J. A. Moore Polymer Science and Engineering Program Rensselaer Polytechnic Institute Troy, NY 12180-3590 INTRODUCTION The thermal stability of polymers is influenced by both chemical and physical factors. 1 ,2 The chemical factors are primary bond strength, secondary or van der Waals' bonding forces, hydrogen bonding, resonance stabilization, mechanism of bond cleavage, molecular symmetry, purity, crosslinking and branching.

10. We would like to thank Dr. A. King III for sharing with us information he had on this equilibrium. 11. (a) R. F. Hudson and M. Green, J. Chern. , 1055 (1962). For similar examples in reactions with esters, see: W. P. Jencks and M. Gilchrist, J. Am. Chern. , 90:2622 (1968). (b) N. L. Bender and W. A. Glasson, J. Am. Chern. , 81:1590 (1959). 34 An~w. Chern. Int. En~. , 17:569 POLY(ENAMINONITRILES): NEW MATERIALS WITH INTERESTING PROPERTIES J. A. Moore Polymer Science and Engineering Program Rensselaer Polytechnic Institute Troy, NY 12180-3590 INTRODUCTION The thermal stability of polymers is influenced by both chemical and physical factors.

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