Journal Article

FZJ-2016-05097

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Scattering investigation of multiscale organization in aqueous solutions of native xanthan

Papagiannopoulos, A. (Corresponding author) ; Sotiropoulos, K. ; Radulescu, A.FZJ*

2016
Elsevier Science Amsterdam [u.a.]

This record in other databases:  

Please use a persistent id in citations: http://hdl.handle.net/2128/12537  doi:10.1016/j.carbpol.2016.07.104

Abstract: The hierarchical morphology of xanthan solutions is analyzed by light and neutron scattering in a broad range of concentrations in order to connect their morphology to their well-documented dynamic properties. Static light scattering inside the semidilute regime is dominated by the form factor of individual xanthan chains while at higher concentrations chain interconnections appear to modify the low wave vector scattering. Dynamic light scattering reveals the self-similar nature of the solutions caused by interchain associations as intensity autocorrelation functions present power-law behaviour. Small angle neutron scattering is dominated by the fractal scattering from the formed network at intermediate length scales. At small length scales the rigid structure of xanthan is revealed and the molecular weight per unit length is extracted. No detectable morphological alterations for shear rates up to 1000 rad/s are observed revealing that the shear thinning behaviour of xanthan is related to the disruption of chain-chain associations.

Keyword(s): Health and Life (1st) ; Soft Condensed Matter (2nd)

---

Contributing Institute(s):

1. JCNS-FRM-II (JCNS (München) ; Jülich Centre for Neutron Science JCNS (München) ; JCNS-FRM-II)
2. Neutronenstreuung (Neutronenstreuung ; JCNS-1)

Research Program(s):

1. 6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623) (POF3-623)
2. 6G15 - FRM II / MLZ (POF3-6G15) (POF3-6G15)

Experiment(s):

1. HERA: H1
2. KWS-2: Small angle scattering diffractometer (NL3ao)

Appears in the scientific report 2016

---

Database coverage:
; ; ; BIOSIS Previews ; Current Contents - Agriculture, Biology and Environmental Sciences ; Current Contents - Life Sciences ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

---