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Discrete, Multiblock Isotactic–Atactic Stereoblock Polypropene Microstructures of Differing Block Architectures through Programmable Stereomodulated Living Ziegler–Natta Polymerization
Author(s) -
Harney Matthew B.,
Zhang Yonghui,
Sita Lawrence R.
Publication year - 2006
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200600027
Subject(s) - tacticity , natta , thermoplastic elastomer , materials science , polymer science , polymerization , polymer chemistry , microstructure , polymer , copolymer , composite material
Tactics in polymerization : The molecular weight and the number, length, and placement of each stereoblock type in a polypropene were programmed to give discrete, multiblock, isotactic–atactic stereoblock microstructures. Several of these specifically designed stereoblock architectures give rise to thermoplastic elastomers (see picture; white and red blocks represent atactic and isotactic blocks, respectively).