Anionic polymerization of monomers containing functional groups. 9. Anionic polymerizations of 4-vinylphenyl methyl sulfide, 4-vinylbenzyl methyl sulfide, and 2-(4′-vinylphenyl)ethyl methyl sulfide

Macromolecules

Volumn 30, Issue 13, 1997, Pages 3728-3731

  Hirao, Akira ^a   Shione, Hideki ^a   Ishizone, Takashi ^a   Nakahama, Seiichi ^a  

^a TOKYO INSTITUTE OF TECHNOLOGY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

ANIONIC POLYMERIZATION; INITIATORS (CHEMICAL); LITHIUM COMPOUNDS; MOLECULAR WEIGHT; POTASSIUM COMPOUNDS; REACTION KINETICS;

LITHIUM NAPHTHALENIDES; POTASSIUM NAPHTHALENIDES; VINYLPHENYL METHYL SULFIDE;

MONOMERS;

EID: 0031162920     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma970152n     Document Type: Article

References (12)

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2. n = 1.06 and 1.05 Furthermore, well-defined A-B-A and B-A-B block copolymers were successfully synthesized by the sequential addition of 4-methoxystyrene and styrene and vice versa. These results clearly show the living character of the anionic polymerization of 4-methoxystyrene.
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11. Hirao, A.; Kitamura, K.; Takenaka, K.; Nakahama, S. Macromolecules 1993, 26, 4995.
12. It should be mentioned that small but detectable amounts (<3%) of high molecular weight shoulders often are observed in the polymer samples. The shoulders always have molecular weights equal to twice those of the main peaks and therefore probably arise from an elimination of metal hydride from the living end followed by a coupling reaction with another living polymer. It is reported by several research groups that this dimer formation by such a coupling reaction is often observed in the anionic living polymerization of styrene.