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Chain Stopper‐Assisted Characterization of Supramolecular Polymers

Frédéric Lortie 1 Sylvie Boileau 1 Laurent Bouteiller 2 Christophe Chassenieux 3 Françoise Lauprêtre 1
2 LCP - Chimie des polymères
IPCM - Institut Parisien de Chimie Moléculaire, UPMC - Université Pierre et Marie Curie - Paris 6, CNRS - Centre National de la Recherche Scientifique : UMR7610
Abstract : Supramolecular polymers are dynamic materials; consequently, their molar mass is concentration dependent. However, the present experimental results show that an efficient chain stopper (i.e., a monofunctional monomer) can be used to block the concentration dependence of the molar mass of a hydrogen-bonded supramolecular polymer, over a realistic concentration range. This fact was used to derive the molecular weight and radius of gyration of the stopped supramolecular chains (by light scattering) as well as the intrinsic viscosity. In a second step, the molecular weight of the bis-urea-based supramolecular polymer (EHUT) was determined in the absence of a chain stopper.
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Frédéric Lortie, Sylvie Boileau, Laurent Bouteiller, Christophe Chassenieux, Françoise Lauprêtre. Chain Stopper‐Assisted Characterization of Supramolecular Polymers. Macromolecules, American Chemical Society, 2005, 38 (12), pp.5283--5287. ⟨10.1021/ma050168a⟩. ⟨hal-01696739⟩



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