graft copolymerization
Semi-refined κ-carrageenan: Part 1. Chemical modification of semi-refined κ-carrageenan via graft copolymerization method, optimization process and characterization of its super absorbent hydrogel.
... The preparation of SRC-g-PAA was carried out through chemical modification of semi- refined -carrageenan that was prepared from K. alvarezii (Doty) Doty ex P. Silva,by introducing vinyl monomer on the carrageenan ...
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Evaluation of process parameters for graft copolymerization of glycidyl methacrylate to kenaf fiber using design of experiment method.
... Contour plot of the two most significant parameters that contribute to the results shown in Figure 3 suggests that the results are not optimized yet and need further improvement for optimization. A large number of work ...
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Microwave radiation induced surface modification of silk fibers with methylmethacrylate and acrylonitrile monomers through graft copolymerization
... The fibers were immersed in water before the graft-copolymerization process to activate the reaction sites on the fiber surface. After that the known amount of ascorbic acid was mixed with hydrogen peroxide ...
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Optimization of Ceric Ammonium Nitrate Initiated Graft Copolymerization of Acrylonitrile onto Chitosan
... matrices. Graft copolymerization of acrylamide on chitosan using ammonium persulfate as an initiator, was prepared ...established. Graft copolymerization of mixtures of acrylic acid and ...
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Synthesis of a New Drug Delivery System Based on Alginate via Graft Copolymerization
... via graft copolymerization of acrylonitrile (AN) monomer was directly grafted onto alginate using ammonium persulfate (APS) as an initiator and sodium hydroxide (NaOH) as a crosslinking agent under an inert ...
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Fabrication of pulverized cellulosics by ultra high-pressure water jet treatment and usage in polymer nanocomposites and graft copolymerization
... as graft copolymerization of methyl methacrylate (MMA) onto the activated cellulose by using ceric ammo- nium nitrate (CAN) as initiator, and evaluated the effects of the counter-collision ...
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Radiation-Induced Graft Copolymerization of Acrylonitrile Onto Kappa-Carrageenan
... Graft copolymerization is an attractive means for modifying base polymers because grafting frequently results in the superposition of properties relating to the backbone and pendant ...radical graft ...
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Graft copolymerization of Methacrylic acid on to potato starch initiated by Ceric ammonium nitrate
... As the present study was confined to granular starch, the temperature was not allowed to exceed the gelatinization temperature. The result obtained for the graft copolymerization at temperature between 30 ...
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Modification Structure of Starch by Graft Copolymerization with Poly(Acrylonitrile) and Calculation Grafting Parameters
... A doubly modified cellulose, St-g- polyacrylonitrile, was prepared using ceric-initiated graft polymerization of acrylonitrile (AN) onto starch. The study of FTIR spectra and thermogravimetric analysis provide ...
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Chemical Modification of Carboxymethyl Cellulose via Graft Copolymerization and Determination of the Grafting Parameters
... PAAm was simultaneously grafted onto CMC in a homogenous medium using Ceric Ammonium Nitrate as a radical initiator under an inert atmosphere.The initiator, polysaccharide and the monomer concentration, as well as the ...
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Graft Copolymerization of Binary Monomer Mixtures onto Silk Fibre
... recently. Graft copolymerization is one of the most promising techniques to impart a variety of functional groups to a polymeric back ...through graft copolymerization are useful in many ...
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Optimization of ceric ammonium nitrate initiated graft copolymerization of acrylonitrile onto sodium salt of partially carboxymethylated sodium alginate
... unreported graft copolymer was synthesized by carrying out ceric ammonium nitrate initiated graft copolymerization of acrylonitrile onto sodium salt of partially carboxymethylated sodium ...on ...
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Graft Copolymerization of Ethyl acrylate onto Sodium salt of Partially Carboxymethylated Sodium Alginate: Optimal Reaction Variables and Characterization
... becomes evident from this figure that %G increases with the rise of temperature from15 o C to 40 o C beyond which it decreases with further increase in temperature. The behaviour of variation of %G with temperature, in ...
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Optimized Graft Copolymerization of Gelatin-G-Poly (Acrylamide-Co-2-Acrylamido-2-Methyl Propan Sulfonic Acid
... chemically graft copolymerization of Acrylamide (AAm) and 2- Acrylamido-2-methyl propan sulfonic acid (AMPS) onto gelatin backbones was conducted as ...
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Delignification Studies of Banana Fibers For Radiation Graft Copolymerization
... Figure 6 portrays the effect of lignin content of banana fiber on grafting yield. The grafting yield depicts a decreasing trend with increase in lignin content. Grafting was found to be in negligible amount on virgin ...
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Rheokinetics of graft copolymerization of acrylamide in concentrated starch and rheological behaviors and microstructures of reaction products
... Original citation: Bao, Xianyang, Yu, Long, Simon, George P., Shen, Shirley, Xie, Fengwei, Liu, Hongsheng, Chen, Ling and Zhong, Lei2018 Rheokinetics of graft copolymerization of acrylam[r] ...
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Grafting Methyl Methacrylate onto Silk via Emulsion Graft Copolymerization Using a Diethylzinc Complex Initiator
... The effect of temperature on the graft yield was more pronounced than that of the initiator concentration. When the reaction temperature was increased from 23˚C to 50˚C and 80˚C, the graft yield greatly ...
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Responsive Biomaterial Surfaces
... the graft yield, ...the graft yield indicating that plasma surface activation is not linearly related the treatment ...graft copolymerization. However, etching occurred and decreased the ...
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Synthesis of Biosuperabsorbent Based on Carboxymethylcellulose-g-poly(AcA-co-AN)
... A novel biosuperabsorbent hydrogel was prepared by simultaneously graft copolymerization of acrylic acid and acrylonitrile onto CMC in the presence of a crosslinking agent. The resultant superabsorbent had ...
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Ag(I) catalysed grafting of acrylonitrile onto Polyvinyl alcohol with Cerium in H2SO4 medium
... by graft copolymerization ...The graft polymerization occurs either through abstraction of hydrogen atom from the backbone polymer containing a hydroxyl group or an amino ...
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