Chain transfer to solvent in the radical polymerization of N-isopropylacrylamide

Yusuke Sugihara; Padraig O'Connor; Per B. Zetterlund; Fawaz Aldabbagh

doi:10.1002/pola.24612

Chain transfer to solvent in the radical polymerization of N-isopropylacrylamide

Yusuke Sugihara
, Padraig O'Connor
, Per B. Zetterlund
, Fawaz Aldabbagh

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

Abstract

Chain transfer to solvent has been investigated in the conventional radical polymerization and nitroxide-mediated radical polymerization (NMP) of N-isopropylacrylamide (NIPAM) in N,N-dimethylformamide (DMF) at 120 °C. The extent of chain transfer to DMF can significantly impact the maximum attainable molecular weight in both systems. Based on a theoretical treatment, it has been shown that the same value of chain transfer to solvent constant, Ctr,S, in DMF at 120 °C (within experimental error) can account for experimental molecular weight data for both conventional radical polymerization and NMP under conditions where chain transfer to solvent is a significant end-forming event. In NMP (and other controlled/living radical polymerization systems), chain transfer to solvent is manifested as the number-average molecular weight (Mn) going through a maximum value with increasing monomer conversion

Original language	English
Pages (from-to)	1856-1864
Number of pages	9
Journal	Journal of Polymer Science, Part A: Polymer Chemistry
Volume	49
Issue number	8
Early online date	1 Mar 2011
DOIs	https://doi.org/10.1002/pola.24612
Publication status	Published - 15 Apr 2011
Externally published	Yes

Keywords

kinetics (polym.)
living radical polymerization (LRP)
molecular weight distribution
mass distribution
radical polymerization

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title = "Chain transfer to solvent in the radical polymerization of N-isopropylacrylamide",

abstract = "Chain transfer to solvent has been investigated in the conventional radical polymerization and nitroxide-mediated radical polymerization (NMP) of N-isopropylacrylamide (NIPAM) in N,N-dimethylformamide (DMF) at 120 °C. The extent of chain transfer to DMF can significantly impact the maximum attainable molecular weight in both systems. Based on a theoretical treatment, it has been shown that the same value of chain transfer to solvent constant, Ctr,S, in DMF at 120 °C (within experimental error) can account for experimental molecular weight data for both conventional radical polymerization and NMP under conditions where chain transfer to solvent is a significant end-forming event. In NMP (and other controlled/living radical polymerization systems), chain transfer to solvent is manifested as the number-average molecular weight (Mn) going through a maximum value with increasing monomer conversion",

keywords = "kinetics (polym.), living radical polymerization (LRP), molecular weight distribution, mass distribution, radical polymerization",

author = "Yusuke Sugihara and Padraig O'Connor and Zetterlund, \{Per B.\} and Fawaz Aldabbagh",

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language = "English",

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TY - JOUR

T1 - Chain transfer to solvent in the radical polymerization of N-isopropylacrylamide

AU - Sugihara, Yusuke

AU - O'Connor, Padraig

AU - Zetterlund, Per B.

AU - Aldabbagh, Fawaz

PY - 2011/4/15

Y1 - 2011/4/15

N2 - Chain transfer to solvent has been investigated in the conventional radical polymerization and nitroxide-mediated radical polymerization (NMP) of N-isopropylacrylamide (NIPAM) in N,N-dimethylformamide (DMF) at 120 °C. The extent of chain transfer to DMF can significantly impact the maximum attainable molecular weight in both systems. Based on a theoretical treatment, it has been shown that the same value of chain transfer to solvent constant, Ctr,S, in DMF at 120 °C (within experimental error) can account for experimental molecular weight data for both conventional radical polymerization and NMP under conditions where chain transfer to solvent is a significant end-forming event. In NMP (and other controlled/living radical polymerization systems), chain transfer to solvent is manifested as the number-average molecular weight (Mn) going through a maximum value with increasing monomer conversion

AB - Chain transfer to solvent has been investigated in the conventional radical polymerization and nitroxide-mediated radical polymerization (NMP) of N-isopropylacrylamide (NIPAM) in N,N-dimethylformamide (DMF) at 120 °C. The extent of chain transfer to DMF can significantly impact the maximum attainable molecular weight in both systems. Based on a theoretical treatment, it has been shown that the same value of chain transfer to solvent constant, Ctr,S, in DMF at 120 °C (within experimental error) can account for experimental molecular weight data for both conventional radical polymerization and NMP under conditions where chain transfer to solvent is a significant end-forming event. In NMP (and other controlled/living radical polymerization systems), chain transfer to solvent is manifested as the number-average molecular weight (Mn) going through a maximum value with increasing monomer conversion

KW - kinetics (polym.)

KW - living radical polymerization (LRP)

KW - molecular weight distribution

KW - mass distribution

KW - radical polymerization

U2 - 10.1002/pola.24612

DO - 10.1002/pola.24612

M3 - Article

SN - 0887-624X

VL - 49

SP - 1856

EP - 1864

JO - Journal of Polymer Science, Part A: Polymer Chemistry

JF - Journal of Polymer Science, Part A: Polymer Chemistry

IS - 8

ER -

Chain transfer to solvent in the radical polymerization of N-isopropylacrylamide

Abstract

Keywords

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