Star-branched polystyrenes by nitroxide living free-radical polymerization

Thodoris Tsoukatos; Stergios Pispas; Nikos Hadjichristidis

doi:10.1002/1099-0518(20010115)39:2<320::AID-POLA80>3.0.CO;2-N

Star-branched polystyrenes by nitroxide living free-radical polymerization

Thodoris Tsoukatos, Stergios Pispas, Nikos Hadjichristidis

Research output: Contribution to journal › Article › peer-review

97 Scopus citations

Abstract

Star-branched polystyrenes, with polydispersity indices of 1.15-1.56 and 4-644 equal arms, were synthesized by the reaction of 2,2,6,6-tetramethylpiperidin-1-yloxy (TEMPO)-capped polystyrene (PS-T) with divinylbenzene (DVB). The characterization of PS-T and the final star polymers was carried out by size exclusion chromatography, low-angle laser light scattering, and viscometry. The degree of branching of the star polymers depended on the DVB/PS-T ratio and the PS-T molecular weight. An asymmetric (or miktoarm) star homopolymer of the PS_nPS′_n type was made by the reaction of the PS_n symmetric star, which had n TEMPO molecules on its nucleus and consisted of a multifunctional initiator, with extra styrene.

Original language	English (US)
Pages (from-to)	320-325
Number of pages	6
Journal	Journal of Polymer Science, Part A: Polymer Chemistry
Volume	39
Issue number	2
DOIs	https://doi.org/10.1002/1099-0518(20010115)39:2<320::AID-POLA80>3.0.CO;2-N
State	Published - Jan 15 2001
Externally published	Yes

ASJC Scopus subject areas

Polymers and Plastics
Organic Chemistry
Materials Chemistry

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10.1002/1099-0518(20010115)39:2<320::AID-POLA80>3.0.CO;2-N

Cite this

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abstract = "Star-branched polystyrenes, with polydispersity indices of 1.15-1.56 and 4-644 equal arms, were synthesized by the reaction of 2,2,6,6-tetramethylpiperidin-1-yloxy (TEMPO)-capped polystyrene (PS-T) with divinylbenzene (DVB). The characterization of PS-T and the final star polymers was carried out by size exclusion chromatography, low-angle laser light scattering, and viscometry. The degree of branching of the star polymers depended on the DVB/PS-T ratio and the PS-T molecular weight. An asymmetric (or miktoarm) star homopolymer of the PSnPS′n type was made by the reaction of the PSn symmetric star, which had n TEMPO molecules on its nucleus and consisted of a multifunctional initiator, with extra styrene.",

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N2 - Star-branched polystyrenes, with polydispersity indices of 1.15-1.56 and 4-644 equal arms, were synthesized by the reaction of 2,2,6,6-tetramethylpiperidin-1-yloxy (TEMPO)-capped polystyrene (PS-T) with divinylbenzene (DVB). The characterization of PS-T and the final star polymers was carried out by size exclusion chromatography, low-angle laser light scattering, and viscometry. The degree of branching of the star polymers depended on the DVB/PS-T ratio and the PS-T molecular weight. An asymmetric (or miktoarm) star homopolymer of the PSnPS′n type was made by the reaction of the PSn symmetric star, which had n TEMPO molecules on its nucleus and consisted of a multifunctional initiator, with extra styrene.

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Star-branched polystyrenes by nitroxide living free-radical polymerization

Abstract

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