Preparation and characterization of supported hydrogels obtained by radiation grafting of binary monomers

Hegazy, El‐Sayed A.; El‐Rehim, Hassan A. Abd; Khalifa, N. A.; Ali, Amr El‐Hag

doi:10.1016/s0969-806x(98)00329-6

Cited by 35 publications

(18 citation statements)

References 15 publications

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“…4c-e) were similar to that of reg-cellulose (Fig. 4b) and the intensity of peak decreased slightly with the increasing of grafting yield, due to the amorphous structure of grafted PNIPAAm chains (Hezazy, Abd El-Rehim, Khalifa, & Ali, 1999).…”

Section: Characterization Of the Cellulose-g-pnipaamsupporting

confidence: 65%

An ionic liquid as reaction media for radiation-induced grafting of thermosensitive poly (N-isopropylacrylamide) onto microcrystalline cellulose

Yan

Peng

et al. 2009

Carbohydrate Polymers

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Section: Characterization Of the Cellulose-g-pnipaamsupporting

confidence: 65%

An ionic liquid as reaction media for radiation-induced grafting of thermosensitive poly (N-isopropylacrylamide) onto microcrystalline cellulose

Yan

Peng

et al. 2009

Carbohydrate Polymers

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“…While ultrasonic grafting is still a very new research area, irradiation technology was first used in polymer chemistry by Charlesby (15) in 1952. He found that irradiation can be used to synthesize cross-linked polyolefin materials, and subsequently more research appeared on monomer grafting by irradiation to the PEW (16,17). Irradiation is also an effective and relatively new method to initiate chemical grafting reactions.…”

Section: Introductionmentioning

confidence: 99%

Grafting of maleic anhydride onto polyethylene wax by melt ultrasound and solid co-irradiation

Qian

Zhang

2010

Radiation Effects and Defects in Solids

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This paper presents a model study to prepare maleic anhydride (MAH)-grafted polyethylene wax (PEW) by using melt ultrasound followed by solid co-irradiation without any initiator or solvent. The MAH graft degree (G) of the product was determined by titration using a solution of organic alkali tetrabutyl ammonium hydroxide in ethanol, which had good accuracy and reproducibility. The experimental results showed that MAH was successfully grafted onto PEW by this method, and the G was 1.57%. The coirradiation processes showed that G and the graft efficiency (G E ) first increased and then decreased with the increase of MAH concentration, and G and G E gradually increased with the increase of the total coirradiation dose in experimental conditions. In addition, a product with a certain G can be obtained by using sole melt ultrasonic treatment.

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“…The synergistic effects of the two functional groups to selectively remove, separate, and recover metals were also studied. 11 The behavior of mixed weak electrolyte anion (amino) and cation (carboxylate) conventional ion-exchangers as an alternative to chelating polymers was investigated. 12 Graft copolymers involving acrylonitrile (AN) and vinyl acetate (VAc) have been the subject of considerable interest because these groups, acetate and nitrile, can be hydrolyzed by using different chemical reagents to give a variety of functional groups.…”

Section: Introductionmentioning

confidence: 99%

Separation and extraction of some heavy and toxic metal ions from their wastes by grafted membranes

Hegazy¹,

Kamal²,

Khalifa³

et al. 2001

J of Applied Polymer Sci

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Preparation and characterization of a series of ion-exchange membranes for the purpose of separation and extraction of some heavy and toxic metal ions from their wastes were studied. Such ion-exchange membranes were prepared by ␥-radiation grafting of acrylonitrile (AN) and vinyl acetate (VAc) in a binary monomer mixture onto low-density polyethylene (LDPE) using the direct technique of grafting. The reaction conditions at which the grafting process proceeds successfully were determined. Many modification treatments were attempted for the prepared membranes to improve their ion-exchange properties. The possibility of their practical use in waste-water treatment to remove some heavy and toxic metal ions such as Pb 2ϩ , Cd 2ϩ , Cu 2ϩ , Fe 3ϩ , Sr 2ϩ , and Li ϩ were investigated. These grafted membranes showed great promise for possible use in the field of extraction and removal of some heavy and toxic metals from their wastes.

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Preparation and characterization of supported hydrogels obtained by radiation grafting of binary monomers

Cited by 35 publications

References 15 publications

An ionic liquid as reaction media for radiation-induced grafting of thermosensitive poly (N-isopropylacrylamide) onto microcrystalline cellulose

An ionic liquid as reaction media for radiation-induced grafting of thermosensitive poly (N-isopropylacrylamide) onto microcrystalline cellulose

Grafting of maleic anhydride onto polyethylene wax by melt ultrasound and solid co-irradiation

Separation and extraction of some heavy and toxic metal ions from their wastes by grafted membranes

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