The living, isoselective polymerization of styrene was promoted by using the titanium complex 1 activated by methylaluminoxane (MAO) at room temperature producing highly isotactic polystyrene(i-PS). The formation of isotactic-polystyrene -block-1,4-trans- polybutadiene copolymers by sequential monomer addition was also accomplished for the first time. The thermal features of these polymers clearly show that both blocks are crystalline with melting points values typical of i-PS and 1,4-trans-PB.
Living, Isoselective Polymerization of Styrene and Formation of Stereoregular Block Copolymers via Sequential Monomer Addition
PROTO, Antonio;RICCIARDI, ROSA;CAPACCHIONE, Carmine
2010-01-01
Abstract
The living, isoselective polymerization of styrene was promoted by using the titanium complex 1 activated by methylaluminoxane (MAO) at room temperature producing highly isotactic polystyrene(i-PS). The formation of isotactic-polystyrene -block-1,4-trans- polybutadiene copolymers by sequential monomer addition was also accomplished for the first time. The thermal features of these polymers clearly show that both blocks are crystalline with melting points values typical of i-PS and 1,4-trans-PB.File in questo prodotto:
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