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Preparation of uniform stereoregular polymer, stereoblock polymer and copolymer of methacrylate, and their stereocomplex formation
Author(s) -
Hatada Koichi,
Kitayama Tatsuki,
Ute Koichi,
Nishiura Takafumi
Publication year - 1998
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19981320121
Subject(s) - copolymer , tacticity , materials science , polymer chemistry , methyl methacrylate , polymer , methacrylate , poly(methyl methacrylate) , chemical engineering , polymerization , composite material , engineering
Isotactic ( it ‐) and syndiotactic ( st ‐) uniform poly(methyl methacrylate)s (PMMAs) were prepared by stereospecific living polymerizations followed by supercritical fluid chromatographic separation. The it‐ and st ‐uniform PMMAs were used to study the mechanism of stereo‐complex formation in solution with the aid of gel permeation chromatography and 1 H NMR spectroscopy. The it ‐ and st ‐uniform PMMAs with hydroxy end‐group were prepared and reacted with sebacoyl dichloride to form uniform stereoblock PMMA. The stereoblock PMMA was found to form intra‐ and intermolecular stereocomplexes in acetone. A uniform stereoblock copolymer, it ‐PMMA‐block‐ st ‐poly(ethyl methacrylate), was prepared and its stereocomplex formation was also studied.