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Titolo:
Controlled cationic polymerization of methyl vinyl ether with a semi-continuous process
Autore:
Reyntjens, WGS; Goethals, EJ;
Indirizzi:
State Univ Ghent, Dept Organ Chem, Div Polymer Chem, B-9000 Ghent, BelgiumState Univ Ghent Ghent Belgium B-9000 olymer Chem, B-9000 Ghent, Belgium
Titolo Testata:
DESIGNED MONOMERS AND POLYMERS
fascicolo: 2, volume: 4, anno: 2001,
pagine: 195 - 201
SICI:
1385-772X(2001)4:2<195:CCPOMV>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
AMPHIPHILIC DIBLOCK COPOLYMERS; BLOCK-COPOLYMERS; MONODISPERSE; ALKYL;
Keywords:
methyl vinyl ether; semi-continuous process; cationic polymerization; end-functionalization;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Goethals, EJ State Univ Ghent, Dept Organ Chem, Div Polymer Chem, Krijgslaan 281,S4 Bis, B-9000 Ghent, Belgium State Univ Ghent Krijgslaan 281,S4 BisGhent Belgium B-9000
Citazione:
W.G.S. Reyntjens e E.J. Goethals, "Controlled cationic polymerization of methyl vinyl ether with a semi-continuous process", DES MON POL, 4(2), 2001, pp. 195-201

Abstract

A semi-continuous process for the controlled cationic polymerization of methyl vinyl ether (MVE) was developed. The initiating system was a combination of 1.1-diethoxyethane (DEE), trimethyl silyl iodide (TMSI), and ZnI2 as activator. The optimal reaction conditions were a reaction temperature of -5 degreesC in toluene, an initiator to activator ratio of 5 to 1, and a monomer feed rate of 0.86 mol/h. With these reaction conditions, poly(methyl vinyl ethers) (PMVEs) with molecular weights up to 7500 could he prepared inquantities up to 30 g with narrow molecular weight distributions (MWD lessthan or equal to1.2) and still possessing active chain ends which can be end-capped with a nucleophilic terminator.

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Documento generato il 01/10/20 alle ore 16:11:36