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Atactic poly(styrene) is thermally less stable than would be expected for a purely head-to-tail polymer. To determine whether or not head-to-head units in the polymer might be responsible for this instability the degradation of both a typical atactic head-to-tail poly(styrene) and the corresponding fully head-to-head polymer has been examined using several thermal techniques-all involving thermogravimetry...
The thermal degradation characteristics of head-to-head poly(styrene) (HHPS) should provide insight with respect to the impact of head-to-head placement on the thermal stability of the traditional atactic head-to-tail polymer (HTPS). The synthesis of head-to-head poly(styrene) must be accomplished indirectly. The HHPS is most satisfactorily obtained by dissolving metal reduction of poly(2,3-diphenyl-1,3-butadiene)...
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