Abstract
AbstractA macro‐azoinitiator containing polyarylate segment and azo group was prepared by the solution polycondensation of azobiscyanopentanoyl chloride and hydroxy‐terminated polyarylates having viscosity‐average molecular weights of 6200, 8100, and 12 400. These macro‐azoinitiators were used in the radical polymerization of styrene to synthesize polyarylate‐polystyrene block copolymers. Thermal properties measured by the differential scanning calorimetry indicated the phase separated morphology of the block copolymers except at low molecular weight of the block constituents. © 1993 John Wiley & Sons, Inc.
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