Kim Chandy, Sainte-Beuve Jérôme, Guilbert Stéphane, Bonfils Frédéric. 2009. Study of chain branching in natural rubber using size-exclusion chromatography coupled with a multi-angle light scattering detector (SEC-MALS). European Polymer Journal, 45 (8) : 2249-2259.
Version publiée
- Anglais
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Quartile : Q2, Sujet : POLYMER SCIENCE
Résumé : The different rheological behaviour of natural rubber (NR) compared to industrial synthetic poly(cis-1,4-isoprene) (SR) has been attributed to the gel phase and long-chain branching. Previous studies on branching in NR were carried out using the fractionation technique by precipitation to obtain narrow molar mass distribution. In this study, chain branching of poly(cis-1,4-isoprene) in NR was characterised by size-exclusion chromatography coupled with an online multi-angle light scattering detector (SEC-MALS). The nanoaggregates adsorbed on the column packing interfered with branching characterisation for short and medium chains (Mw < 1000 kg/mol). Using a master curve of linear standard poly(- cis-1,4-isoprenes), SEC-MALS revealed no or very little branching in the higher chains (1000 < Mw < 10,000 kg/mol) of natural rubber contrary to previous studies. This study showed that the soluble portion of NR samples was composed of almost linear poly(cis- 1,4-isoprene) and nanoaggregates with rather compact structures.
Mots-clés Agrovoc : caoutchouc, polymère, propriété rhéologique, structure chimique, chromatographie, propriété optique
Mots-clés géographiques Agrovoc : Cambodge
Mots-clés complémentaires : Caoutchouc synthétique, Nanoparticule
Classification Agris : Q60 - Traitement des produits agricoles non alimentaires
U30 - Méthodes de recherche
Champ stratégique Cirad : Hors axes (2005-2013)
Auteurs et affiliations
- Kim Chandy, CIRAD-PERSYST-UMR IATE (FRA)
- Sainte-Beuve Jérôme, CIRAD-PERSYST-UMR IATE (FRA)
- Guilbert Stéphane, Montpellier SupAgro (FRA)
- Bonfils Frédéric, CIRAD-PERSYST-UMR IATE (FRA) ORCID: 0000-0001-7016-4770
Autres liens de la publication
Source : Cirad - Agritrop (https://agritrop.cirad.fr/550019/)
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