Radiation Synthesis and Magnetic Property Investigations of the Graft Copolymer Poly(Ethylene-g-Acrylic Acid)/Fe3O4 Film

Ghobashy, Mohamed Mohamady; Khafaga, Mervat R.

doi:10.1007/s10948-016-3718-5

Cited by 13 publications

(2 citation statements)

References 22 publications

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“…The peaks that appeared at 582 and 562 cm −1 are indicative of stretching, and the variation modes of Fe-O confirms the presence of crystalline Fe 3 O 4 . 24 The FTIR studies indicated that a physical interaction is present between Fe 3 O 4 nanoparticles coated with PAAc polymer. 25,26…”

Section: Ftir-atr Of Paac/fe 3 O 4 Nanocompositementioning

confidence: 97%

In-situ core-shell polymerization of magnetic polymer nanocomposite (PAAc/Fe₃O₄) particles via gamma radiation

El-Sayyad

2017

Nanocomposites

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Gamma radiation as a novel approach to synthesize coreshell magnetic polymer nanocomposite (PAAc/Fe 3 O 4) particles was investigated. The Fe 3 O 4 nanoparticles were primarily prepared by in situ precipitation-oxidation and radiation polymerization of polyacrylic acid PAAc. The polymerization process was carried out by dissolving two salts of Fe 2+/3+ sulfates into a 20% solution of PAAc followed by exposing them to gamma radiation at a dose of 30 kGy. Subsequently, an appropriate amount of ammonium (NH 4 OH) solution was added to the PAAc/Fe 2+/3+ polymer solution, yielding a black precipitate of PAAc/Fe 3 O 4. Transmission electron microscopy revealed that the in situ polymerization of core-shell magnetic polymer nanocomposites resulted in sphere-like particles of PAAc/Fe 3 O 4 with diameters of 30 nm. Hysteresis loops indicated that these particles are ferromagnetic in nature.

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Section: Ftir-atr Of Paac/fe 3 O 4 Nanocompositementioning

confidence: 97%

In-situ core-shell polymerization of magnetic polymer nanocomposite (PAAc/Fe₃O₄) particles via gamma radiation

El-Sayyad

2017

Nanocomposites

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“…Cross-linking by irradiation occurs using a high-ionizing energy, such as gamma rays (Co-60), x-ray, or electron beam (e-beam). Gamma irradiation is more economically rather than the rest of the other irradiation techniques [40,41]. Gamma irradiation is a promising technique to fabricate a wide scale of different materials especially polymeric materials [42][43][44].…”

Section: Ionizing Radiationmentioning

confidence: 99%

Superabsorbent

El-Sayyad¹

2018

Hydrogels

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Superabsorbent hydrogel (SAH) is a cross-linked polyelectrolyte polymer that has the capability to absorb a lot of water by keeping it in a three-dimensional (3D) structure. The network's structure of SAH has the high elasticity that gives the ability of pores to expand in an aqueous media into up to 150-1500 times their own size in a dry state. The size of pores is the major factor that controls the swelling degree of the hydrogel. In contrast, the swelling degree is related to cross-linked density and the number of polarizable functional groups that immobilize on the polymer backbone. The hydrogels could be made by radical-initiated polymerization of hydrophilic monomers, and/or linear polymers dissolve in an aqueous solution. Free radical polymerization of the hydrogel can be done physically or chemically. Advantages and disadvantages of each method will be elaborated in this chapter. The advances in radiation cross-linking methods for the hydrogel preparation are particularly addressed besides other different techniques, e.g., (freezing/ thawing and chemical initiation). This chapter will review the preparation methods of superabsorbent hydrogels from synthetic and natural hydrophilic polymers with other new phases such as wax, gum, and rubber. Methods to characterize these hydrogels and their proposed applications (internal curing agent for cement, agricultural proposal, biomedical proposal, and environmental proposal) are also reviewed.

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Radiation-induced nucleation and pH-controlled nanostructure shape of polyaniline dispersed in DMF

2018

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Radiation Synthesis and Magnetic Property Investigations of the Graft Copolymer Poly(Ethylene-g-Acrylic Acid)/Fe3O4 Film

Cited by 13 publications

References 22 publications

In-situ core-shell polymerization of magnetic polymer nanocomposite (PAAc/Fe₃O₄) particles via gamma radiation

In-situ core-shell polymerization of magnetic polymer nanocomposite (PAAc/Fe₃O₄) particles via gamma radiation

Superabsorbent

Radiation-induced nucleation and pH-controlled nanostructure shape of polyaniline dispersed in DMF

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Radiation Synthesis and Magnetic Property Investigations of the Graft Copolymer Poly(Ethylene-g-Acrylic Acid)/Fe3O4 Film

Cited by 13 publications

References 22 publications

In-situ core-shell polymerization of magnetic polymer nanocomposite (PAAc/Fe3O4) particles via gamma radiation

In-situ core-shell polymerization of magnetic polymer nanocomposite (PAAc/Fe3O4) particles via gamma radiation

Superabsorbent

Radiation-induced nucleation and pH-controlled nanostructure shape of polyaniline dispersed in DMF

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Product

Resources

About

In-situ core-shell polymerization of magnetic polymer nanocomposite (PAAc/Fe₃O₄) particles via gamma radiation

In-situ core-shell polymerization of magnetic polymer nanocomposite (PAAc/Fe₃O₄) particles via gamma radiation