Synthesis and Swelling Characterization, of Eco-friendly Cellulose/poly(AAc- co-AAm)/Ag Nanocomposite

Abstract

Eco-friendly cross-linked cellulose/poly(AAc-co- AAm)/ silver nanocomposite was successfully synthesized via simple free radical graft polymerization in presence of N,N'- methylene bisacrylamide (MBA) as crosslinking agent and potassium persulphate as an initiator. The grafted cellulose copolymers hydrogels AgNPs were characterized using several characterization techniques such as ultraviolet spectrometry (UV-Vis), scanning electron microscopy (SEM) and X-ray diffraction (XRD). Microscopic analytical techniques exhibited an average diameter of 39-55 nm for AgNPs, as well as give information about shape and surface topography of the nanocomposite. XRD pattern of all samples showed that the finger print of Ag, cellulose and poly(AAc-co-AAm) have been observed approving the preparation of superabsorbent Ag nanocomposites. The influence of variables such as composition ratio and AgNO3 concentration, on the swelling behavior of prepared hydrogels. The degree of swelling was substantially increased with decreasing AAc : AAm molar ratio from 1:3 to 1:2. Effect of silver nitrate concentration result show the water absorption increase with increase of AgNO3 concentration. A maximum swelling of 669 g/g and 515 g/g respectively in distilled water and tap water were obtained when 15mmol of AgNO3 was incorporated