Investigations and characterization of radiation grafted copolymers for possible practical use in waste water treatment

Hegazy, El‐Sayed A.; El‐Rehim, Hassan A. Abd; Shawky, Hosam

doi:10.1016/s0969-806x(99)00312-6

Cited by 59 publications

(37 citation statements)

References 21 publications

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“…The graft copolymerization of vinyl and acrylic monomers offers an attractive way to modify polymers for biomedical applications. [1][2][3][4][5][6][7] Radiation-induced grafting has generated considerable interest in the modification of polymers for specific applications. 8 -10 The advantage of radiation grafting is that the resultant material not only retains most of its original characteristics but also acquires additional properties of the grafted moiety.…”

Section: Introductionmentioning

confidence: 99%

Preparation of antimicrobial sutures by preirradiation grafting of acrylonitrile onto polypropylene monofilament. II. Mechanical, physical, and thermal characteristics

Jain

Gupta

Anjum

et al. 2004

J of Applied Polymer Sci

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Polypropylene-g-polyacrylonitrile sutures were prepared by graft polymerization of acrylonitrile onto polypropylene monofilament by preirradiation method. Sutures with various graft levels were characterized by Fourier Transform Infrared Spectroscopy (FTIR), Density, Birefriengence, X-ray Diffraction, Scanning Electron Microscopy (SEM), and Differential Scanning Calorimetry (DSC). Mechanical properties of the unmodified and grafted sutures were also evaluated. The physical characteristics of sutures were markedly affected by the graft levels. Density of the polypropylene sutures increased with an increased in the degree of grafting. The heat of fusion and heat of crystallization decreased with the increase in the degree of grafting. X-ray diffraction also revealed decrease in crystallinity with the increase in the graft levels. Tenacity of the monofilament improved, whereas the elongation at break decreased in grafted samples. Scanning electron microscopy showed significant variation in surface morphology in the grafted samples. ©

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Section: Introductionmentioning

confidence: 99%

Preparation of antimicrobial sutures by preirradiation grafting of acrylonitrile onto polypropylene monofilament. II. Mechanical, physical, and thermal characteristics

Jain

Gupta

Anjum

et al. 2004

J of Applied Polymer Sci

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“…[17][18][19][20][21] These membranes have been found to be very effective in separating different metal ions from waste water. Recently, we carried out the grafting of acrylamide into polyethylene films to develop membranes for the separation of toxic metals from textile waste water.…”

Section: Introductionmentioning

confidence: 99%

Development of membranes by radiation grafting of acrylamide into polyethylene films: Properties and metal ion separation

Gupta¹,

Anjum

Sen³

2002

J of Applied Polymer Sci

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Polyethylene-g-polyacrylamide membranes were prepared by graft polymerization of acrylamide into polyethylene films using a preirradiation technique. The membranes showed good swelling in water and a maximum of 232% swelling was achieved for a graft level of 590%. The electrical resistance of the membranes decreased with increase in the degree of grafting to 200% and then stabilized with a further increase in grafting to 590%. The membranes had an excellent binding capacity for mercury ions. Almost 99% mercury separation was achieved from a metal solution of 200 ppm. The metal binding capacity increased with increase in the degree of grafting in the membranes. A binding capacity as high as 6.2 mmol/g in a membrane with 590% grafting was achieved. The pH of the metal solution did not have any significant influence on the binding ability of the membranes. The mercury-loaded membranes showed better thermal stability as compared to those without metal binding.

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“…The higher the stability of complex the higher the affinity is obtained. Among other important factors determining the stability and affinity are the metal ion radii, its electronic distribution, hydration energy, valency and ionic strength [22,23].…”

Section: Selectivity Of Nwpp-g-aac Towards Different Metals In Mixturementioning

confidence: 99%

Selectivity of Acrylic Acid Radiation Grafted Non-Woven Polypropylene Sheets towards Some Heavy Metals Ions

Hegazy¹

2012

OJPChem

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Graft polymerization has been considered as a general method for the modification of the physical and chemical properties of polymeric materials and of particular interest for synthesis of the hydrophilic membrane. In this study, hydrophilic carboxylic acid groups were introduced by radiation-induced grafting of acrylic acid (AAc) onto non-woven polypropylene fabric (NWPP). Different irradiation doses and (AAc) monomer concentrations were used to optimize grafting yield. Characterization and properties of the prepared graft copolymer were studied by employing X-ray Diffraction (XRD), Thermogravimetric Analysis (TGA), Scanning Electron Microscope (SEM ), Fourier Transform Infrared Spectrometry (FTIR) and differential scanning calorimeter (DSC). The prepared grafted materials were used for removing some heavy metals ions. The results showed that the non-woven PP grafted with (AAc) has good affinity toward Cu, Ni and Co.

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Investigations and characterization of radiation grafted copolymers for possible practical use in waste water treatment

Cited by 59 publications

References 21 publications

Preparation of antimicrobial sutures by preirradiation grafting of acrylonitrile onto polypropylene monofilament. II. Mechanical, physical, and thermal characteristics

Preparation of antimicrobial sutures by preirradiation grafting of acrylonitrile onto polypropylene monofilament. II. Mechanical, physical, and thermal characteristics

Development of membranes by radiation grafting of acrylamide into polyethylene films: Properties and metal ion separation

Selectivity of Acrylic Acid Radiation Grafted Non-Woven Polypropylene Sheets towards Some Heavy Metals Ions

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