PRELIMINARY ASSESSMENTS ABOUT THE SORBTIVE PROPERTIES OF NEW TYPES OF TEMPO-OXIDIZED CELLULOSE AND PULLULAN - PVA HYBRID HYDROGELS: ORGANIC DYES AND METALLIC IONS RETENTIONS
Journal Title: BULETINUL INSTITUTULUI POLITEHNIC DIN IASI, CHIMIE SI INGINERIE CHIMICA - Year 2018, Vol 64, Issue 1
Abstract
Polyvinyl alcohol (PVA) is a biodegradable polymer, largely used in the last years for the production of biodegradable hybrid materials, as a substitute of traditional polyethylene or polypropylene polymers. These materials have proved beneficial applications in water filtration, paper industry, mats and films production, and packaging. However, the PVA itself suffer of poor mechanical strength, requiring other components able to improve this property. Thereby, we propose the use of various amounts of natural polymers, i.e. cellulose and pullulan, in the form of C6 oxidized derivatives, as multifunctional key components, acting both as cross-linking agents, but also increasing the strengthening and stiffness properties of the as prepared hybrid PVA hydrogels. Therefore, several hybrid PVA hydrogels, with different amounts of incorporated polysaccharide (PVA-5P, PVA-10P, PVA-25P; PVA-5C, PVA-10C and PVA-25C) were synthesized and tested as sorbents for two models of dyes (Orange 16 and Methylene Blue) and Co2+ as metallic ions.
Authors and Affiliations
DANIELA ȘUTEU, IULIA NICA, RALUCA IOANA BARON, GABRIELA BILIUȚĂ, Sergiu Coseri
Keywords
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