Chemically induced graft copolymerization of acrylic acid onto cellophane films

Awady, Mahmoud M. El; El-Awady, N. I.; El-Din, M. Shams

doi:10.1080/714975724

Cited by 9 publications

(2 citation statements)

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“…In another set of experiments,2 ferrous ammonium sulfate–potassium persulphate was used as redox initiator towards grafting of Ethyl acrylate (EA) onto cellulose and its reactivity was compared with that of (Fe 2+ + H 2 O 2 ). The graft copolymerization of methacrylic acid, epoxypropyl acrylate, and epoxypropyl methacrylate onto wood fibers initiated by peroxidation has been reported by Daneault et al3 Grafting of acrylic acid onto cellophane films was studied using ferrous ion‐hydrogen peroxide, a redox initiator system 4…”

Section: Introductionmentioning

confidence: 97%

“…The graft copolymerization of methacrylic acid, epoxypropyl acrylate, and epoxypropyl methacrylate onto wood fibers initiated by peroxidation has been reported by Daneault et al 3 Grafting of acrylic acid onto cellophane films was studied using ferrous ion-hydrogen peroxide, a redox initiator system. 4 Stanettt and Williams 5 grafted EA onto rayon by preirrradiation method and examined the effect of post decrystallization on the mechanical behavior of the graft copolymer. Chauhan and coworkers.…”

Section: Introductionmentioning

confidence: 99%

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Radiation induced graft copolymerization of vinyl monomers and their binary mixture onto rayon fibre

Rattan¹,

Maitra²,

Misra

et al. 2008

J of Applied Polymer Sci

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Ethyl acrylate (EA), Vinyl imidazole (VI), and their binary mixture have been copolymerized onto rayon in aqueous medium by mutual method using g-radiation. The graft yield has been determined as a function of different reaction parameters such as total dose, concentration of vinyl monomers, and amount of water. Effect of surfactant (1-octane sulfonic acid, sodium salt) has been studied on the percentage of grafting of EA, VI, and (EA þ VI). A plausible mechanism has been suggested to explain the observed behavior of the surfactant on grafting. Water retention and moisture regain of the grafted film was determined at appropriate relative humidity. The graft copolymers have been characterized by IR spectroscopy and scanning electron microscopic methods.

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Radiation induced graft copolymerization of vinyl monomers and their binary mixture onto rayon fibre

Rattan¹,

Maitra²,

Misra

et al. 2008

J of Applied Polymer Sci

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Preparation and characterization of grafted cellophane membranes for affinity separation of His‐tag Chitinase

2011

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Immobilized Cu2+ ions affinity cellophane membranes for affinity separation of His-tag Chitinase were prepared. Cellophane membranes were first grafted with polymethacrylic acid, and the impacts of various grafting conditions on grafting process parameters were evaluated. Fourier transform GRAFTED CELLOPHANE MEMBRANES FOR SEPARATION OF HIS-TAG CHITINASEinfrared analysis and thermal gravimetric analysis provided evidences of grafting occurrence. The grafted membranes were then immobilized with copper ions as the last step before being tested in separation of chitinase enzyme from an equal protein mixture with bovine serum albumin (BSA). The membranes show high affinity toward the separation of chitinase enzyme, which adsorbed 80% of chitinase and only 28% of BSA from the 0.25% protein mixture solution. At lower concentrations, 0.025%-0.05%, the membranes show complete selectivity toward chitinase. No leakage of Cu 2+ ions was detected in the elution solution, whereas 95% of chitinase and 90% of BSA were eluted. C 2011 Wiley Periodicals, Inc.

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Immobilized metal ions cellophane–PGMA‐grafted membranes for affinity separation of β‐galactosidase enzyme. I. Preparation and characterization

Eldin

Soliman

Abu‐Saied

2008

J of Applied Polymer Sci

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Immobilized Cu 2þ ions affinity cellophanepoly(glycidyl methacrylate) (PGMA)-grafted membranes have been prepared through three steps. The first step was introducing of epoxy groups to its chemical structure through grafting process with PGMA. Factors affecting the grafting process have been studied and grafting percentage (GP) up to 233% has been obtained. The second step was converting the introduced epoxy groups to sulfonic ones. It was found that maximum amount of sulfonic groups (2.7 mmol/g) was obtained with minimum GP (46.08%). The third and last step was the immobilization of Cu 2þ ions into sulfonated grafted membranes obtained from the previous step. Maximum amount of immobilized Cu 2þ ions was found to be 60.9 ppm per gram of polymer. The verification of the grafting and sulfonation steps has been performed through characterization of the obtained membranes using FTIR, TGA, and EDAX analysis. Finally, Cu 2þ -immobilized membranes have been evaluated in separation of b-galactosidase (bGal) enzyme from its mixture with bovine serum albumin (BSA) in different pH medium. Maximum protein adsorption, for both proteins, has been obtained at pH range 4-4.5; as 90 and 45% for b-Gal and BSA, respectively. The results showed high affinity toward b-Gal separation although BSA concentration (0.5%) is 20-folds of b-Gal (0.025%).

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Chemically induced graft copolymerization of acrylic acid onto cellophane films

Cited by 9 publications

References 0 publications

Radiation induced graft copolymerization of vinyl monomers and their binary mixture onto rayon fibre

Radiation induced graft copolymerization of vinyl monomers and their binary mixture onto rayon fibre

Preparation and characterization of grafted cellophane membranes for affinity separation of His‐tag Chitinase

Immobilized metal ions cellophane–PGMA‐grafted membranes for affinity separation of β‐galactosidase enzyme. I. Preparation and characterization

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