01758nas a2200181   4500008004100000022001400041245011200055210006900167260007100236300001400307490000700321520103800328100002001366700001701386700002701403700002001430856012601450       2006                        eng d  a0024-929700aWell-defined poly(4-vinylbenzocyclobutene): synthesis by living anionic polymerization and characterization0 aWelldefined poly4vinylbenzocyclobutene synthesis by living anion  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcMAY  a3525-35300 v393 a<p>Living anionic polymerization of 4-vinylbenzocylobutene was performed in benzene at room temperature using sec-butyllithium as the initiator. Results of the kinetic studies indicated the termination- and transfer-free nature of the polymerization. Homopolymers with predictable molecular weights and narrow molecular weight distributions were produced, excluding the interference of the cyclobutene rings during initiation and propagation. Thermogravimetric analysis of poly( 4-vinylbenzocyclobutene) in air showed a small weight gain at similar to 200 degrees C, a rapid decomposition at similar to 455 degrees C, and a gradual decomposition at similar to 566 degrees C. This behavior was attributed to the formation of radicals from the pendent benzocyclobutene functionality through o-quinodimethane intermediates and simultaneous decomposition/ cross-linking reactions at high temperature. The living nature of the polymerization was also examined via sequential copolymerization with butadiene to form diblock copolymers.</p>1 aSakellariou, G.1 aBaskaran, D.1 aHadjichristidis, Nikos1 aMays, Jimmy, W.  uhttps://library.ncl.res.in/content/well-defined-poly4-vinylbenzocyclobutene-synthesis-living-anionic-polymerization-and-0