Laser single pulse initiated RAFT polymerization for assessing chain-length dependent radical termination kinetics

Michael Buback; Thomas Junkers; Philipp Vana

doi:10.1002/marc.200500067

Laser single pulse initiated RAFT polymerization for assessing chain-length dependent radical termination kinetics

Michael Buback, Thomas Junkers, Philipp Vana

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

65 Citations (Scopus)

Abstract

A novel method combining RAFT polymerization with pulsed-laser initiation for determining chain-length dependent termination rate coefficients, k _t, is presented. Degenerative chain-transfer in RAFT enables single-pulse pulsed-laser polymerization (SP-PLP) traces to be measured on systems with a narrow radical distribution that remains essentially unchanged during the experiment. SP-PLP-RAFT experiments at different polymerization times allow for determining k_t as a function of chain length via classical kinetics assuming chain-length independent k_t.

Original language	English
Pages (from-to)	796-802
Number of pages	7
Journal	Macromolecular Rapid Communications
Volume	26
Issue number	10
DOIs	https://doi.org/10.1002/marc.200500067
Publication status	Published - 19 May 2005
Externally published	Yes

Keywords

Chain-length dependent termination
Kinetics (polym.)
Living/controlled free-radical polymerization
Reversible addition fragmentation chain transfer (RAFT)
Single-pulse pulsed-laser polymerization (SP-PLP)

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10.1002/marc.200500067

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N2 - A novel method combining RAFT polymerization with pulsed-laser initiation for determining chain-length dependent termination rate coefficients, k t, is presented. Degenerative chain-transfer in RAFT enables single-pulse pulsed-laser polymerization (SP-PLP) traces to be measured on systems with a narrow radical distribution that remains essentially unchanged during the experiment. SP-PLP-RAFT experiments at different polymerization times allow for determining kt as a function of chain length via classical kinetics assuming chain-length independent kt.

AB - A novel method combining RAFT polymerization with pulsed-laser initiation for determining chain-length dependent termination rate coefficients, k t, is presented. Degenerative chain-transfer in RAFT enables single-pulse pulsed-laser polymerization (SP-PLP) traces to be measured on systems with a narrow radical distribution that remains essentially unchanged during the experiment. SP-PLP-RAFT experiments at different polymerization times allow for determining kt as a function of chain length via classical kinetics assuming chain-length independent kt.

KW - Chain-length dependent termination

KW - Kinetics (polym.)

KW - Living/controlled free-radical polymerization

KW - Reversible addition fragmentation chain transfer (RAFT)

KW - Single-pulse pulsed-laser polymerization (SP-PLP)

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JO - Macromolecular Rapid Communications

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IS - 10

ER -

Laser single pulse initiated RAFT polymerization for assessing chain-length dependent radical termination kinetics

Abstract

Keywords

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