caa a22 4500 605466815 CHVBK 20210128100308.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s00397-015-0888-1 doi (NATIONALLICENCE)springer-10.1007/s00397-015-0888-1 Nonlinear and linear viscoelastic properties of a novel type of xanthan gum with industrial applications [Elektronische Daten] [José Carmona, Aurora Lucas, Pablo Ramírez, Nuria Calero, José Muñoz] The influence of concentration in the viscoelastic properties of an "advanced performance” xanthan gum was studied by means of both techniques, small amplitude oscillatory shear (SAOS) and large amplitude oscillatory shear (LAOS). G′ and G″, within linear viscoelastic range, were demonstrated to be higher than the ones for the conventional xanthan gum pointing out to a less fluid-like behaviour. The combination of the use of both rheological measurements revealed a regime transition within the concentration range studied. Thus, the deviations from the Cox-Merz rule for the concentrations above 0.20% (m/m) indicate the occurrence of a more development structure. In addition, the analysis of the influence of concentration on the local shear-thickening parameter (T) obtained by LAOS confirmed the modification of the gum structure. Springer-Verlag Berlin Heidelberg, 2015 Rheological properties nationallicence Xanthan gum nationallicence Nonlinear viscoelasticity nationallicence LAOS nationallicence Carmona José Departamento de Ingeniería Química, Facultad de Química, Universidad de Sevilla, 41012, Sevilla, Spain aut Lucas Aurora Departamento de Ingeniería Química, Facultad de Química, Universidad de Sevilla, 41012, Sevilla, Spain aut Ramírez Pablo Departamento de Ingeniería Química, Facultad de Química, Universidad de Sevilla, 41012, Sevilla, Spain aut Calero Nuria Departamento de Ingeniería Química, Facultad de Química, Universidad de Sevilla, 41012, Sevilla, Spain aut Muñoz José Departamento de Ingeniería Química, Facultad de Química, Universidad de Sevilla, 41012, Sevilla, Spain aut Rheologica Acta Springer Berlin Heidelberg 54/11-12(2015-12-01), 993-1001 0035-4511 54:11-12<993 2015 54 397 https://doi.org/10.1007/s00397-015-0888-1 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00397-015-0888-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Carmona José Departamento de Ingeniería Química, Facultad de Química, Universidad de Sevilla, 41012, Sevilla, Spain aut NATIONALLICENCE 700 1- Lucas Aurora Departamento de Ingeniería Química, Facultad de Química, Universidad de Sevilla, 41012, Sevilla, Spain aut NATIONALLICENCE 700 1- Ramírez Pablo Departamento de Ingeniería Química, Facultad de Química, Universidad de Sevilla, 41012, Sevilla, Spain aut NATIONALLICENCE 700 1- Calero Nuria Departamento de Ingeniería Química, Facultad de Química, Universidad de Sevilla, 41012, Sevilla, Spain aut NATIONALLICENCE 700 1- Muñoz José Departamento de Ingeniería Química, Facultad de Química, Universidad de Sevilla, 41012, Sevilla, Spain aut NATIONALLICENCE 773 0- Rheologica Acta Springer Berlin Heidelberg 54/11-12(2015-12-01), 993-1001 0035-4511 54:11-12<993 2015 54 397