Graft copolymerization of methyl methacrylate onto sago starch using ceric ammonium nitrate and potassium persulfate as redox initiator systems

Fakhru’l‐Razi, A.; Qudsieh, Isam Y.; Yunus, Wan Md Zin Wan; Ahmad, Mansor Bin; Rahman, Mohamad Zaki Ab.

doi:10.1002/app.1974

Cited by 67 publications

(34 citation statements)

References 19 publications

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“…The purified copolymers were washed with methanol and dried to a constant mass at 60°C [28]. The grafting parameters such as the grafting efficiency (GE/%) and the grafting percent (G/%) were evaluated using the following equations according [29,30]: …”

Section: Synthesis Of Starch-g-copolymersmentioning

confidence: 99%

Starch-g-poly(benzyl methacrylate) copolymers

Worzakowska

2016

J Therm Anal Calorim

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The physicochemical properties such as swelling in polar and non-polar solvents, moisture resistance, chemical resistance, ability for gelatinization and the thermal properties along with the evolution of volatile decomposition products of some starch-g-copolymers obtained through the grafting of benzyl methacrylate monomer onto potato starch have been studied. The chemical structure of copolymers was confirmed using ATR-FTIR analysis. The prepared materials were characterized by completely different properties than unmodified potato starch due to the covalent bonding of poly(benzyl methacrylate) chains onto starch backbone. The copolymers were not able to gelate; however, they exhibited higher swelling in non-polar solvents, lower swelling in polar solvents and higher resistance toward moisture, acid and base conditions than unmodified potato starch. In addition, DSC analysis showed that T g of copolymers was shifted to a little higher values as compared to T g of poly(benzyl methacrylate). The thermal stabilities of copolymers and potato starch were comparable. Their decomposition took place in two main stages connected with the emission of various volatile decomposition products (CO 2 , CO, H 2 O, CH 4 , aldehydes, alcohols, furan derivatives, acids, benzyl methacrylate) in inert atmosphere as it was confirmed based on the simultaneous TG/DSC/ FTIR analysis.

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Section: Synthesis Of Starch-g-copolymersmentioning

confidence: 99%

Starch-g-poly(benzyl methacrylate) copolymers

Worzakowska

2016

J Therm Anal Calorim

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“…As a result, increasing the grafting efficiency enhances the serviceability of the products. On the other hand, if the grafting ratio is similar, the enhancement of the grafting efficiency decreases the required amounts of the monomers, and this reduces the production cost [21,22].…”

Section: Resultsmentioning

confidence: 99%

Graft copolymerization of acrylic acid onto hydrolyzed potato starch using various initiators

Djordjević

Nikolić

Kovačević

et al. 2013

Per. Pol. Chem. Eng.

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“…These free radical species reacted directly with hydroxyl groups (on the biomass surface) to produce radicals on the polymer backbone. 21 The mechanism of the graft copolymerization of methacrylic acid onto the biomass can be explained in terms of equations (2) …”

Section: Results and Discussion Preparation And Characterization Of Tmentioning

confidence: 99%

Poly (methacrylic acid) modified biomass for enhancement adsorption of Pb²⁺, Cd²⁺ and Cu²⁺

Tong

Sun

et al. 2007

J of Chemical Tech & Biotech

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In this study, the graft copolymerization of methacrylic acid onto the biomass of baker's yeast was carried out in aqueous medium using potassium persulfate (PPS) as initiator. The poly (methacrylic acid) modified biomass obtained was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and microscopic analyses. The number of functional groups was determined by potentiometric titration. The adsorption capacity of the modified biomass for Pb 2+ , Cd 2+ and Cu 2+ showed a significant increase compared with the pristine biomass, due to the presence of a large number of functional groups. According to the Langmuir equation, the maximum uptake capacities (q m ) for Pb 2+ , Cd 2+ and Cu 2+ were 243.9, 108.7 and 73.5 mg g −1 , respectively. Adsorption kinetics study showed that completion of the adsorption process needed only 30 min. The loaded biosorbent was regenerated using EDTA solution and used repeatedly three times with little loss of uptake capacity. Good results were obtained when the modified biomass was used to treat simulated wastewater containing Pb 2+ , Cd 2+ and Cu 2+ .

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Graft copolymerization of methyl methacrylate onto sago starch using ceric ammonium nitrate and potassium persulfate as redox initiator systems

Cited by 67 publications

References 19 publications

Starch-g-poly(benzyl methacrylate) copolymers

Starch-g-poly(benzyl methacrylate) copolymers

Graft copolymerization of acrylic acid onto hydrolyzed potato starch using various initiators

Poly (methacrylic acid) modified biomass for enhancement adsorption of Pb²⁺, Cd²⁺ and Cu²⁺

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Graft copolymerization of methyl methacrylate onto sago starch using ceric ammonium nitrate and potassium persulfate as redox initiator systems

Cited by 67 publications

References 19 publications

Starch-g-poly(benzyl methacrylate) copolymers

Starch-g-poly(benzyl methacrylate) copolymers

Graft copolymerization of acrylic acid onto hydrolyzed potato starch using various initiators

Poly (methacrylic acid) modified biomass for enhancement adsorption of Pb2+, Cd2+ and Cu2+

Contact Info

Product

Resources

About

Poly (methacrylic acid) modified biomass for enhancement adsorption of Pb²⁺, Cd²⁺ and Cu²⁺