Scleroglucan (Sclg) and guar gum (GG) are capable of giving gels in the presence of borax. This study focuses on how a mixed system of the two polysaccharides can be affected by the addition of borax. The anisotropic swelling behavior of tablets obtained by compression of the freeze-dried new gel system is also investigated and compared to that of Sclg and GG alone. Rheological characterization evidences a synergistic effect in terms of critical time, mesh size, as well as cross-linking density. Also creep recovery experiments, carried out in the presence of borax, show a synergistic effect: when the polymers are mixed, quite low compliance was estimated in comparison to that of Sclg and GG. On the other side, the flexible chains of GG induce the self-healing properties of the mixed gel system since the rigid, triple helix of Sclg does not show such peculiar characteristics. The deep insight into the physico-chemical properties of the new hydrogel system can play a fundamental role in optimizing its practical application (e.g., in drug delivery, cosmetic products, human tissue repair, wound dressing, and food staff).

Scleroglucan and guar gum. The synergistic effects of a new polysaccharide system / Coviello, Tommasina; Alhaique, Franco; DI MEO, Chiara; Matricardi, Pietro; Montanari, Elita; Zoratto, Nicole; Grassi, Mario; Abrami, Michela. - In: EXPRESS POLYMER LETTERS. - ISSN 1788-618X. - 16:4(2022), pp. 410-426. [10.3144/expresspolymlett.2022.30]

Scleroglucan and guar gum. The synergistic effects of a new polysaccharide system

Coviello Tommasina;Alhaique Franco;Di Meo Chiara;Matricardi Pietro;Montanari Elita;Zoratto Nicole;
2022

Abstract

Scleroglucan (Sclg) and guar gum (GG) are capable of giving gels in the presence of borax. This study focuses on how a mixed system of the two polysaccharides can be affected by the addition of borax. The anisotropic swelling behavior of tablets obtained by compression of the freeze-dried new gel system is also investigated and compared to that of Sclg and GG alone. Rheological characterization evidences a synergistic effect in terms of critical time, mesh size, as well as cross-linking density. Also creep recovery experiments, carried out in the presence of borax, show a synergistic effect: when the polymers are mixed, quite low compliance was estimated in comparison to that of Sclg and GG. On the other side, the flexible chains of GG induce the self-healing properties of the mixed gel system since the rigid, triple helix of Sclg does not show such peculiar characteristics. The deep insight into the physico-chemical properties of the new hydrogel system can play a fundamental role in optimizing its practical application (e.g., in drug delivery, cosmetic products, human tissue repair, wound dressing, and food staff).
2022
bioplolymers; guar gum; rheology; scleroglucan; water uptake
01 Pubblicazione su rivista::01a Articolo in rivista
Scleroglucan and guar gum. The synergistic effects of a new polysaccharide system / Coviello, Tommasina; Alhaique, Franco; DI MEO, Chiara; Matricardi, Pietro; Montanari, Elita; Zoratto, Nicole; Grassi, Mario; Abrami, Michela. - In: EXPRESS POLYMER LETTERS. - ISSN 1788-618X. - 16:4(2022), pp. 410-426. [10.3144/expresspolymlett.2022.30]
File allegati a questo prodotto
File Dimensione Formato  
Coviello_Scleroglucan_2022.pdf

accesso aperto

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Creative commons
Dimensione 4.47 MB
Formato Adobe PDF
4.47 MB Adobe PDF

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1651405
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 3
  • ???jsp.display-item.citation.isi??? 3
social impact