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Synthesis of poly(styrene-graft-ethylene oxide) by ethoxylation of amide group containing styrene copolymers

Jannasch, Patric LU and Wesslén, Bengt LU (1993) In Journal of Polymer Science. Part A, Polymer Chemistry 31(6). p.1519-1529
Abstract
Graft copolymers containing poly(ethylene oxide) side chains on a polystyrene backbone have been synthesized. Styrene copolymers synthesized by free radical mechanism and containing between 5 and 15 mol % acrylamide or methacrylamide were used as backbones. The amide groups in the copolymers were ionized by using potassium tert-butoxide or potassium naphthalene, and grafting was achieved by utilizing the amide anions as initiator sites for the polymerization of ethylene oxide in 2-ethoxyethyl ether at 65°C. The graft copolymers were characterized with respect to molecular weight and composition using elemental analysis, NMR, gel permeation chromatography, IR, and viscosity measurements. The size of the side chains were between 600 and 2000... (More)
Graft copolymers containing poly(ethylene oxide) side chains on a polystyrene backbone have been synthesized. Styrene copolymers synthesized by free radical mechanism and containing between 5 and 15 mol % acrylamide or methacrylamide were used as backbones. The amide groups in the copolymers were ionized by using potassium tert-butoxide or potassium naphthalene, and grafting was achieved by utilizing the amide anions as initiator sites for the polymerization of ethylene oxide in 2-ethoxyethyl ether at 65°C. The graft copolymers were characterized with respect to molecular weight and composition using elemental analysis, NMR, gel permeation chromatography, IR, and viscosity measurements. The size of the side chains were between 600 and 2000 g/mol. GPC results from a hydrolyzed graft copolymer sample suggest a narrow size distribution for the poly(ethylene oxide) grafts. Solution properties of the graft copolymers were investigated in different toluene/methanol mixtures. The intrinsic viscosities of the graft copolymers were found to depend primarily on the poly(ethylene oxide) content rather than the graft density or the poly(ethylene oxide) chain length. (Less)
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keywords
ANIONIC POLYMERIZATION OF ETHYLENE OXIDE, ETHOXYLATION, STYRENE OXIRANE GRAFT COPOLYMERS, GRAFTING, POLY(STYRENE-GRAFT-ETHYLENE OXIDE), SOLUTION PROPERTIES, POLY(STYRENE-CO-ACRYLAMIDE)
in
Journal of Polymer Science. Part A, Polymer Chemistry
volume
31
issue
6
pages
1519 - 1529
publisher
John Wiley and Sons
external identifiers
  • scopus:0027591891
ISSN
0887-624X
DOI
10.1002/pola.1993.080310622
language
English
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yes
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The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Polymer and Materials Chemistry (LTH) (011001041)
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24d775f1-6032-4f55-8e62-8aa1459ba8cd (old id 142546)
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2016-04-01 17:06:20
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2021-01-03 07:50:17
@article{24d775f1-6032-4f55-8e62-8aa1459ba8cd,
  abstract     = {Graft copolymers containing poly(ethylene oxide) side chains on a polystyrene backbone have been synthesized. Styrene copolymers synthesized by free radical mechanism and containing between 5 and 15 mol % acrylamide or methacrylamide were used as backbones. The amide groups in the copolymers were ionized by using potassium tert-butoxide or potassium naphthalene, and grafting was achieved by utilizing the amide anions as initiator sites for the polymerization of ethylene oxide in 2-ethoxyethyl ether at 65°C. The graft copolymers were characterized with respect to molecular weight and composition using elemental analysis, NMR, gel permeation chromatography, IR, and viscosity measurements. The size of the side chains were between 600 and 2000 g/mol. GPC results from a hydrolyzed graft copolymer sample suggest a narrow size distribution for the poly(ethylene oxide) grafts. Solution properties of the graft copolymers were investigated in different toluene/methanol mixtures. The intrinsic viscosities of the graft copolymers were found to depend primarily on the poly(ethylene oxide) content rather than the graft density or the poly(ethylene oxide) chain length.},
  author       = {Jannasch, Patric and Wesslén, Bengt},
  issn         = {0887-624X},
  language     = {eng},
  number       = {6},
  pages        = {1519--1529},
  publisher    = {John Wiley and Sons},
  series       = {Journal of Polymer Science. Part A, Polymer Chemistry},
  title        = {Synthesis of poly(styrene-graft-ethylene oxide) by ethoxylation of amide group containing styrene copolymers},
  url          = {http://dx.doi.org/10.1002/pola.1993.080310622},
  doi          = {10.1002/pola.1993.080310622},
  volume       = {31},
  year         = {1993},
}