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Telechelic ionomers studied by light scattering and dynamic mechanical measurements
Chassenieux, Christophe; Johannsson, Ragnar; Durand, Dominique et al.
1996In Colloids and Surfaces A: Physicochemical and Engineering Aspects, 112 (2-3), p. 155-162
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Keywords :
halatotelechelic polymer
Abstract :
[en] The formation of a transient network by sulfonato polyisoprene and sulfonato polystyrene in toluene is studied using static and dynamic light scattering and dynamic mechanical analysis. It is shown that at low concentrations aggregates are formed with increasing molar mass and polydispersity as the polymer concentration is increased. Above a certain concentration well below the overlap concentration of the polymer chains (C*), a transient network is formed. This is characterised by a plateau modulus at high frequencies and a relatively narrow viscoelastic relaxation time distribution. The intensity auto-correlation function of the transient network shows two relaxational modes: a relatively fast diffusional mode close to the co-operative diffusional mode of semidilute solutions of the unfunctionalised polymers, and a slow broader mode which becomes independent of the scattering angle at concentrations close to C*. The relation between this slow mode and the viscoelastic relaxation is discussed.
Research center :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Materials science & engineering
Chemistry
Author, co-author :
Chassenieux, Christophe;  Université du Maine, Le Mans, France > Laboratoire de Physico Chimie Macromoléculaire
Johannsson, Ragnar;  Université du Maine, Le Mans, France > Laboratoire de Physico Chimie Macromoléculaire
Durand, Dominique;  Université du Maine, Le Mans, France > Laboratoire de Physico Chimie Macromoléculaire
Nicolai, Taco;  Université du Maine, Le Mans, France > Laboratoire de Physico Chimie Macromoléculaire
Vanhoorne, Pierre ;  Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Jérôme, Robert ;  Université de Liège - ULiège > Centre d'études et de rech. sur les macromolécules (CERM)
Language :
English
Title :
Telechelic ionomers studied by light scattering and dynamic mechanical measurements
Publication date :
31 July 1996
Journal title :
Colloids and Surfaces A: Physicochemical and Engineering Aspects
ISSN :
0927-7757
eISSN :
1873-4359
Publisher :
Elsevier
Volume :
112
Issue :
2-3
Pages :
155-162
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 29 June 2009

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