Living, Isoselective Polymerization of 4-Methyl-1,3-pentadiene and Styrenic Monomers and Synthesis of Highly Stereoregular Block Copolymers via Sequential Monomer Addition
作者： Carmine Capacchione , Daniela Saviello , Rosa Ricciardi , Antonio Proto
DOI: 10.1021/MA201442W
关键词:
摘要: The living, isoselective polymerization of 4-methyl-1,3-pentadiene, 4-methylstyrene, and 4-tert-butylstyrene was promoted by using the titanium complex 1 activated methylaluminoxane (MAO) at room temperature producing highly isotactic polymers. synthesis polystyrene-block-poly(4-methyl-1,3-pentadiene), poly(4-methylstyrene)-block-polystyrene, poly(4-methylstyrene)-block-1,4-trans-poly(1,3-butadiene), poly(4-methylstyrene)-block-polystyrene-block-poly(4-methylstyrene), poly(4-methylstyrene)-block-polystyrene-block-poly(4-methyl-1,3-pentadiene), poly(4-methylstyrene)-block-polystyrene-block-poly(4-tert-butylstyrene) copolymers also accomplished for first time, sequential monomer addition, in presence system MAO. thermal features these polymers clearly show that all copolymer blocks, except 4-methylstyrene one, are crystalline with melting point values typical corresponding homopolymers. a low molecular wei...
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