Rate coefficients of the initial steps of radiation induced oligomerization of acrylates in dilute aqueous solution

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Abstract

The OH radical induced oligomerization in dilute aqueous solution of ethyl- and 2-hydroxypropyl acrylate, methyl- and 2-hydroxypropyl methacrylate, acrylamide and methacrylamide, ethyl-fumarate and maleate was investigated by pulse- and steady-state radiolysis. In pulse radiolysis the reactions were observed by measuring the absorbance of the α-carboxyalkyl type radicals. At low concentration (≤1 mmol dm-3) the radicals decay in self-termination. At higher concentration there is a significant deviation from the simple second order behavior due to oligomerization. Computer programs were used to calculate the rate coefficients of propagation and termination at the beginning of oligomerization.

Original languageEnglish
Pages (from-to)639-644
Number of pages6
JournalRadiation Physics and Chemistry
Volume55
Issue number5-6
DOIs
Publication statusPublished - Aug 1 1999

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acrylates
aqueous solutions
radiolysis
radiation
coefficients
maleates
pulses
low concentrations
computer programs
deviation
propagation
decay

ASJC Scopus subject areas

  • Radiation

Cite this

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title = "Rate coefficients of the initial steps of radiation induced oligomerization of acrylates in dilute aqueous solution",
abstract = "The OH radical induced oligomerization in dilute aqueous solution of ethyl- and 2-hydroxypropyl acrylate, methyl- and 2-hydroxypropyl methacrylate, acrylamide and methacrylamide, ethyl-fumarate and maleate was investigated by pulse- and steady-state radiolysis. In pulse radiolysis the reactions were observed by measuring the absorbance of the α-carboxyalkyl type radicals. At low concentration (≤1 mmol dm-3) the radicals decay in self-termination. At higher concentration there is a significant deviation from the simple second order behavior due to oligomerization. Computer programs were used to calculate the rate coefficients of propagation and termination at the beginning of oligomerization.",
author = "L. Wojn{\'a}rovits and E. Tak{\'a}cs",
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T1 - Rate coefficients of the initial steps of radiation induced oligomerization of acrylates in dilute aqueous solution

AU - Wojnárovits, L.

AU - Takács, E.

PY - 1999/8/1

Y1 - 1999/8/1

N2 - The OH radical induced oligomerization in dilute aqueous solution of ethyl- and 2-hydroxypropyl acrylate, methyl- and 2-hydroxypropyl methacrylate, acrylamide and methacrylamide, ethyl-fumarate and maleate was investigated by pulse- and steady-state radiolysis. In pulse radiolysis the reactions were observed by measuring the absorbance of the α-carboxyalkyl type radicals. At low concentration (≤1 mmol dm-3) the radicals decay in self-termination. At higher concentration there is a significant deviation from the simple second order behavior due to oligomerization. Computer programs were used to calculate the rate coefficients of propagation and termination at the beginning of oligomerization.

AB - The OH radical induced oligomerization in dilute aqueous solution of ethyl- and 2-hydroxypropyl acrylate, methyl- and 2-hydroxypropyl methacrylate, acrylamide and methacrylamide, ethyl-fumarate and maleate was investigated by pulse- and steady-state radiolysis. In pulse radiolysis the reactions were observed by measuring the absorbance of the α-carboxyalkyl type radicals. At low concentration (≤1 mmol dm-3) the radicals decay in self-termination. At higher concentration there is a significant deviation from the simple second order behavior due to oligomerization. Computer programs were used to calculate the rate coefficients of propagation and termination at the beginning of oligomerization.

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JO - Radiation Physics and Chemistry

JF - Radiation Physics and Chemistry

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