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Publication Type : Journal Article
Thematic Areas : Nanosciences and Molecular Medicine
Publisher : Carbohydrate Polymers,
Source : Carbohydrate Polymers, Volume 248, p.116763 (2020)
Keywords : biodegradation, Cross-linker, Lyophilisation, Phase inversion, Polysaccharide, Sanitary napkin, Superabsorbent
Campus : Amritapuri, Kochi
School : Center for Nanosciences
Center : Amrita Center for Nanosciences and Molecular Medicine Move, Nanosciences
Department : Nanosciences and Molecular Medicine
Year : 2020, 2021
Abstract : The main intent of this investigation was to retain the strength and superabsorbency of natural and non-toxic biodegradable polymers using an innovative combination of cross-linkers for application as the absorbent core of sanitary napkins. For this, sodium carboxymethyl cellulose (NaCMC) and starch were blend to form membranes by phase inversion and lyophilisation, using an optimized cross-linker combination of sodium trimetaphosphate (STMP) and aluminium sulphate (AlS). Optimal cross-linking of NaCMC and starch hampered membrane dissolution and disintegration, yielding a microtextured surface morphology. The membranes were biodegradable and yet possessed the requisite flexibility and mechanical strength for the proposed application, without compromise of superabsorbency. Lyophilised membranes possessed higher immediate water and blood sorption with ∼50% water retention capabilities when compared to the phase inversion technology. The results suggest that the developed membranes can be a cost-effective degradable alternative to the commercial polyacrylate-based nonbiodegradable sanitary products.
Cite this Research Publication : R. G, C.R, R., Shantikumar V Nair, and Menon, D., “Superabsorbent sodium carboxymethyl cellulose membranes based on a new cross-linker combination for female sanitary napkin applications”, Carbohydrate Polymers, vol. 248, p. 116763, 2020.