Gamma Irradiation Effect on the Thermal Stability, Optical and Electrical Properties of Acrylic Acid/ Methyl Methacrylate Copolymer Films

A., Fawzy Yasser H.; El-Hag, Ali Amr; F., El-Maghraby Ghada; M., Radwan Reda

doi:10.4236/wjcmp.2011.11003

Cited by 24 publications

(7 citation statements)

References 10 publications

(12 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1 So the use of gamma radiation facility gives good results for preparation studies. 2 Radiation processing of polymer materials involves subjecting the polymers to irradiation, usually in a continuous mode for modifications of the polymers to improve properties. 3,4 Modified polymeric resins [5][6][7][8] may offer several properties and different applications.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and application of a modified acrylamide–styrene sulfonate resin and a composite for sorption of some rare earth elements

et al. 2015

View full text Add to dashboard Cite

The present work was attempted to prepare three new sorbents including a poly(acrylamide-sodium styrene sulphonate) P(AM-SSS) hydrogel, a poly(hydroxamic acid-sodium styrene sulphonate) P(HA-SSS) modified polymeric resin and a poly(acrylamide-sodium styrene sulphonate-silicon oxide) P(AM-SSS-SiO 2 ) composite by irradiation template polymerization. The effective reaction parameters such as absorbed dose (kGy), crosslinker and monomer concentration, and the polymer/monomer ratio, which affect the degree of template polymerization, were optimized to get the maximum conversion percentage and high capacity. The physicochemical swelling behavior of the hydrogel was higher than the resin and the composite. Modification of the hydrogel into modified polymeric resin was achieved by using hydroxylamine hydrochloride. The modification process is indicated by FTIR characteristic absorption bands of -O-H and 4N-Ogroups of the hydroxamic groups. Furthermore, an organic-inorganic composite was prepared by introducing silica into the polymer, which is indicated by FTIR characteristic adsorption bands of the silica network at 1209 cm À1 and 960 cm À1 . The application of the prepared sorbents for removal of La 3+ , Ce 3+ , Nd 3+ , Eu 3+ and Pb 2+ from aqueous solution was investigated by a batch technique. Various factors influencing the sorption behaviors were tested such as shaking time, pH and initial metal ion concentration. The obtained results showed that the prepared composite has better uptake percentage and higher capacity than the resin and the hydrogel and the sorption efficiency of metal ions towards the three adsorbent materials obeys the order La 3+ 4 Ce 3+ 4 Nd 3+ 4 Eu 3+ 4 Pb 2+ .

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and application of a modified acrylamide–styrene sulfonate resin and a composite for sorption of some rare earth elements

et al. 2015

View full text Add to dashboard Cite

show abstract

“…The effects of irradiation on the electrical conductivity have been described by the fact that crosslinking lessened the crystallinity and induced further lattice disorders, which could behave as energy barriers and scattering centers for the flow of electric current. For γ‐irradiated copolymer films, the reduction of the direct‐current (dc) conductivity was noticed by Fawzy et al ., and this effect was interpreted as an occurrence of probable crosslinking in the copolymer films. Moreover, it was suggested that the decrease in dc conductivity was due to the formation of some defects in the energy gap as a result of γ irradiation.…”

Section: Introductionmentioning

confidence: 91%

Effects of the γ‐irradiation strength and basalt additive content on the mechanical performance and dielectric response of polypropylene films

Kılıç

Özdemir

Alkan

et al. 2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

In this study, we investigated the effects of high‐dose γ‐ray irradiation on the mechanical and dielectric properties of polypropylene (PP)–basalt thick films. PP–basalt thick‐film composites with various basalt contents from 0.5 to 10.0% were prepared by a hot‐press method. The samples were exposed to γ radiation at different doses in the range 3–25 kGy. The mechanical properties of the samples, such as the Young's modulus, tensile strength, percentage strain at break, and energy at break, were examined in the context of the γ‐irradiation process. Although the maximum elasticity was obtained for the unirradiated 0.5% basalt‐added composite, the 6 kGy γ‐irradiated PP–1.0% basalt sample exhibited the highest elasticity properties among all of the composites. The best mechanical properties, including the ultimate tensile strength and energy at break values, were achieved for the 12 kGy γ‐irradiated neat PP. The dielectric properties of the PP–basalt composites were also investigated in the 100 Hz to 15 MHz frequency region at room temperature. According to the analysis of the dielectric properties, the 3 kGy γ‐irradiated neat PP may have potential for microelectronic device applications that require low dielectric constant and dielectric loss materials. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47414.

show abstract

“…It is clear that increasing the irradiated dose from 100-400 kGy leads to an increase of the absorbance due to increase of polarons formation at higher doses. The observed shift in the fundamental absorption edge of UV-visible spectra can be correlated with optical band gap Eg [30][31][32]. For the determination of direct and indirect energy band gap, hvα and hvα / they were plotted separately as a function of photon energy (hv).…”

Section: Optical Propertiesmentioning

confidence: 99%

Effect of Gamma Irradiation on the Physical and Chemical Properties of Copper-Poly Vinyl Pyrolidone Composite Films

Waly

Shehata

Mahmoud

2018

Arab Journal of Nuclear Sciences and Applications

View full text Add to dashboard Cite

Polymer composite films based on poly-vinylpyrrolidone (PVP) doped with different copper concentrations in 1 % HNO 3 were prepared using the solution cast technique. The polymer films were subjected to 60 Co γ-ray source at various doses ranging between 100 and 400 kGy. The effect of Cu ions concentration and -irradiation doses on the physico-chemical properties have been investigated. FTIR spectra gave information about vibration changes that occurred due to copper dopant and -irradiation doses. XRD results indicated that the amorphous domain of the PVP polymer matrix was increased with increasing of the dopant concentration. The surface morphology was examined (SEM). The electrical conductivity was increased with the increase of the Cu dopant concentration and -irradiation dose. The direct and indirect optical band gap values were decreased to 3.09 and 2.84 eV respectively as the irradiation dose wad increased to 400 kGy.

show abstract

Gamma Irradiation Effect on the Thermal Stability, Optical and Electrical Properties of Acrylic Acid/ Methyl Methacrylate Copolymer Films

Cited by 24 publications

References 10 publications

Synthesis, characterization and application of a modified acrylamide–styrene sulfonate resin and a composite for sorption of some rare earth elements

Synthesis, characterization and application of a modified acrylamide–styrene sulfonate resin and a composite for sorption of some rare earth elements

Effects of the γ‐irradiation strength and basalt additive content on the mechanical performance and dielectric response of polypropylene films

Effect of Gamma Irradiation on the Physical and Chemical Properties of Copper-Poly Vinyl Pyrolidone Composite Films

Contact Info

Product

Resources

About