Specific ion effects in polysaccharide dispersions

Duccio Tatini; Filippo Sarri; Piefrancesco Maltoni; Moira Ambrosi; Emiliano Carretti; Barry W Ninham; Pierandrea Lo Nostro

doi:10.1016/j.carbpol.2017.05.078

Specific ion effects in polysaccharide dispersions

Carbohydr Polym. 2017 Oct 1:173:344-352. doi: 10.1016/j.carbpol.2017.05.078. Epub 2017 May 27.

Authors

Duccio Tatini¹, Filippo Sarri², Piefrancesco Maltoni³, Moira Ambrosi⁴, Emiliano Carretti⁵, Barry W Ninham⁶, Pierandrea Lo Nostro⁷

Affiliations

¹ Department of Chemistry "Ugo Schiff" and CSGI, University of Florence, 50019 Sesto Fiorentino, Firenze, Italy. Electronic address: duccio.tatini@unifi.it.
² Department of Chemistry "Ugo Schiff" and CSGI, University of Florence, 50019 Sesto Fiorentino, Firenze, Italy. Electronic address: filippo.sarri@unifi.it.
³ Department of Chemistry "Ugo Schiff" and CSGI, University of Florence, 50019 Sesto Fiorentino, Firenze, Italy. Electronic address: pierfrancesco.maltoni@stud.unifi.it.
⁴ Department of Chemistry "Ugo Schiff" and CSGI, University of Florence, 50019 Sesto Fiorentino, Firenze, Italy. Electronic address: moira.ambrosi@unifi.it.
⁵ Department of Chemistry "Ugo Schiff" and CSGI, University of Florence, 50019 Sesto Fiorentino, Firenze, Italy. Electronic address: emiliano.carretti@unifi.it.
⁶ Department of Chemistry "Ugo Schiff" and CSGI, University of Florence, 50019 Sesto Fiorentino, Firenze, Italy; Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 2600, Australia. Electronic address: barry.ninham@anu.edu.au.
⁷ Department of Chemistry "Ugo Schiff" and CSGI, University of Florence, 50019 Sesto Fiorentino, Firenze, Italy. Electronic address: pierandrea.lonostro@unifi.it.

PMID: 28732875
DOI: 10.1016/j.carbpol.2017.05.078

Abstract

The specific effects induced by some strong electrolytes or neutral co-solutes on aqueous mixtures of guar gum (GG), sodium alginate (SA) and sodium hyaluronate (SH) were studied through rheology and DSC experiments. The results are discussed in terms of changes in the polymer conformation, structure of the network and hydration properties. This study is also aimed at controlling the viscosity of the aqueous mixtures for application in green formulations to be used as fracturing fluids for shale gas extraction plants.

Keywords: Guar gum; Polysaccharide(s); Sodium hyaluronate; Specific ion effect; Thermal properties; Viscosity.