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New ester and lactone end-functionalized N-vinyl-2-pyrrolidinone oligomers
KTH, Tidigare Institutioner                               , Polymerteknologi.ORCID-id: 0000-0001-8696-9143
2000 (engelsk)Inngår i: Macromolecular Chemistry and Physics, ISSN 1022-1352, E-ISSN 1521-3935, Vol. 201, nr 12, s. 1219-1225Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

New oligomers of N-vinyl-2-pyrrolidinone functionalized at one end with either ester or lactone functions were obtained by radical polymerization in the presence of different ester (methyl isobutyrate and methyl phenylacetate) and lactone (epsilon-caprolactone, delta-valerolactone and gamma-btyrolactone) compounds as chain transfer agents. The oligomeric samples obtained were characterized in terms of molecular weight and molecular weight distribution by means of analytical size exclusion chromatography (SEC), using purposely synthesized poly(N-vinyl-2-pyrrolidinone) standards. The chain transfer constant C-tau of either methyl isobutyrate, delta-valerolactone, or gamma-butyrolactone towards N-vinyl-2-pyrrolidinone were determined with the help of the known cumulative number-average degree of polymerization (X) over bar(n) and monomer conversion Y-t of the samples during the reaction.

sted, utgiver, år, opplag, sider
2000. Vol. 201, nr 12, s. 1219-1225
Emneord [en]
molecular-weight characterization
Identifikatorer
URN: urn:nbn:se:kth:diva-19994ISI: 000088962700003OAI: oai:DiVA.org:kth-19994DiVA, id: diva2:338687
Merknad
QC 20100525Tilgjengelig fra: 2010-08-10 Laget: 2010-08-10 Sist oppdatert: 2020-01-08bibliografisk kontrollert

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