Grafting of acrylonitrile onto cellulosic material derived from bamboo (Dendrocalamus strictus)

Abstract

Bamboo, a lignocellulosic biopolymer material, is of interest as feedstock for production of cellulose derivatives by chemical functionalization. Optimization of grafting of acrylonitrile onto cellulosic material (average Degree of Polymerization 816), isolated from bamboo (Dendrocalamus stictus) was performed by varying the process parameters such as duration of soaking of cellulosic material in ceric ammonium nitrate solution, ceric ammonium nitrate concentration, polymerization time, temperature of reaction and acrylonitrile concentration to study their influence on percent grafting and grafting efficiency. Graft copolymerization of acrylonitrile onto cellulosic material derived from bamboo (Dendrocalamus strictus) in heterogenous medium can be initiated effectively with ceric ammonium nitrate. The optimum reaction conditions obtained for grafting of acrylonitrile onto cellulosic material were: duration of dipping cellulosic material in ceric ammonium nitrate solution 1 hr, ceric ammonium nitrate concentration 0.02 M, acrylonitrile concentration 24.6 mol/anhydroglucose unit, temperature of reaction 40°C and polymerization time 4 hrs. The percent grafting for optimized samples is 210.3% and grafting efficiency is 97%. The characterization of the grafted products by means of FTIR and Scanning Electron Microscopy furnished the evidence of grafting of acrylonitrile onto the cellulosic material

Modification of pineapple leaf fibers and graft copolymerization of acrylonitrile onto modified fibers

“…This can be explained by a higher availability of monomer molecules in the proximity of cellulose macro-radicals as well as in the polymerization medium at higher monomer concentration. The same types of observations were also reported in V51-cyclohexanone-initiated grafting of AN onto acetylated jute, 29,34 Ce(IV)-N-acetylglycine initiated grafting of AN onto chemically modified PALF, 6 and FeðIIÞ=S 2 O 2À 8 initiated grafting of AN onto jute fibers. 37 FT-IR spectroscopy analysis of raw, bleached, and AN-g-PALFs Figure 3(a) shows the characteristic broad absorption of the raw lingocellulose fibers found at 3200-3600 cm À1 due to the hydrogen bonded -OH vibration ( OH ) of the cellulose structure of PALFs.…”

“…Our results also supported the reported observations for the graft copolymerization of AN onto jute fibers using different types of redox systems as an initiator. 33,34 Effects of initiator concentration on grafting. Figure 2(b) shows the effect of the concentration on the grafting yield at three different temperatures.…”

Chemical Modification of Cellulose Isolated from Underutilized Hibiscus sabdariffa via Surface Grafting: A Potential Bio-based Resource for Industrial Application

“…[13][14][15][16] Surface-grafted cellulose is presently finding application in water treatment, medicine, personal care products, textile, and food industries. 17 This has created the need and search for cheap, environmentally friendly, and efficient biopolymers from natural resources like cellulose.…”

Preparation of a Methylcellulose‐graft‐Methyl Methacrylate Copolymer as an Ultrafiltration Membrane Material

“…Various polymers such as cellulose and cellulose derivatives have been used for graft copolymerization. Khullar et al [16] reported the synthesis of carboxymethyl cellulose with acrylonitrile, and Chen et al [17] investigated the antifouling property of cellulose acetate graft copolymers synthesized using polyacrylonitrile. However, to our knowledge, studies on grafting methyl methacrylate (MMA) onto MC and its application in ultrafiltration membrane processes have not been reported.…”