Influence of Electron Beam Irradiation Dose on the Properties of Crosslinked UHMWPE

2008 ◽  
pp. 228-228-12 ◽  
Author(s):  
NA Abt ◽  
W Schneider ◽  
R Schön ◽  
CB Rieker
Keyword(s):  
Electron Beam ◽  
Irradiation Dose ◽  
Electron Beam Irradiation ◽  
Beam Irradiation

scholarly journals Radiation Processing and Characterization of Some Ethylene-propylene-diene Terpolymer/Butyl (Halobutyl) Rubber/Nanosilica Composites

Polymers ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2431
Author(s):  
Elena Manaila ◽  
Anton Airinei ◽  
Maria Daniela Stelescu ◽  
Maria Sonmez ◽  
Laurentia Alexandrescu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Electron Beam ◽  
Water Uptake ◽  
Irradiation Dose ◽  
Electron Beam Irradiation ◽  
Rubber Matrix ◽  
Scanning Electron Microscopy Data ◽  
Beam Irradiation ◽  
Ethylene Propylene ◽  
Ethylene Propylene Diene Terpolymer

Composites based on ethylene–propylene–diene terpolymer (EPDM), butyl/halobutyl rubber and nanosilica were prepared by melt mixing and subjected to different doses of electron beam irradiation. The effect of irradiation dose on the mechanical properties, morphology, glass transition temperature, thermal stability and water uptake was investigated. The efficiency of the crosslinking by electron beam irradiation was analyzed by Charlesby–Pinner parameter evaluation and crosslink density measurements. The scanning electron microscopy data showed a good dispersion of nanosilica in the rubber matrix. An improvement in hardness and 100% modulus was revealed by increasing irradiation dose up to 150 kGy. The interaction between polymer matrix and nanosilica was analyzed using the Kraus equation. Additionally, these results indicated that the mechanical properties, surface characteristics, and water uptake were dependent on crosslink characteristics.

scholarly journals E-beam irradiation for the control of Phytophthora nicotianae var. nicotianae in stonewool cubes

Nukleonika ◽  
2015 ◽  
Vol 60 (3) ◽  
pp. 679-682 ◽  
Author(s):  
Magdalena Ptaszek ◽  
Leszek B. Orlikowski ◽  
Wojciech Migdał ◽  
Urszula Gryczka
Keyword(s):  
Electron Beam ◽  
Root Rot ◽  
Irradiation Dose ◽  
Electron Beam Irradiation ◽  
Potato Dextrose Agar ◽  
Phytophthora Nicotianae ◽  
Beam Irradiation ◽  
Pathogen Population ◽  
Stem Base ◽  
Tomato Seedlings

Abstract Effectiveness of electron beam irradiation was evaluated against Phytophthora nicotianae var. nicotianae, the causal agent of stem base and root rot of tomato. In laboratory trials, irradiation of 7-day-old Phytophthora cultures growing on potato-dextrose-agar (PDA) medium with 1 kGy resulted in the disintegration of the pathogen’s hyphae. Increasing the irradiation dose to 3 kGy caused decay of the hyphae. Irradiation of infested stonewool with 5 kGy caused decrease of the pathogen population about 5 times. Application of 20 kGy completely eliminated the pathogen from stonewool. Irradiation of substratum resulted in significant increase of tomato seedlings healthiness, especially when the dose 20 kGy was applied.

Color Change of Spodumene Gemstone by Electron Beam Irradiation

2013 ◽  
Vol 770 ◽  
pp. 370-373 ◽  
Author(s):  
Pannipa Noithong ◽  
Panee Pakkong ◽  
Kittisakchai Naemchanthara
Keyword(s):  
Crystal Structure ◽  
Electron Beam ◽  
Irradiation Dose ◽  
Electron Beam Irradiation ◽  
Color Change ◽  
Crystal Structure Analysis ◽  
Beam Irradiation ◽  
Color Analysis ◽  
Before And After ◽  
Impurity Elements

Study on the electron beam irradiation color change induction of spodumene (LiAlSi2O6) samples, which color exhibit green, pink and colorless. Characteristic the electron-beam irradiation dose were selected 30,000 kGy, 40,000 kGy and 50,000 kGy. The color and fading of spodumene samples were analyzed by UV-VIS spectrophotometer , crystal structure were determined by X-ray diffraction (XRD) spectrometer, free radical species of impurities were determined by Electron Spin Resonance (ESR) spectrometer before and after irradiation. The results revealed the color of spodumene samples changed after irradiation, from green spodumene became a little darker color, pink spodumene became green color, colorless spodumene became pink to purple color the results of the color analysis and fading displayed on the CIE L* a* b* color system, color change spodumene samples were determined by values changed of a* and b*. Color fade of spodumene were determined by values changed of L*. The results of all samples crystal structure analysis were shown on the XRD patterns of the JCPDS No. 89-6662 (Spodumene) with monoclinic structure. The radical analysis results of impurity elements, green and pink only appear the ESR pattern of manganese (Mn2+), and chromium (Cr3+), respectively. It can be conclusion that intensity of color change depend on the irradiation dose and impurity elements in spodumene samples.

scholarly journals Effects of Electron Beam Irradiation on the Mechanical, Thermal, and Surface Properties of Some EPDM/Butyl Rubber Composites

Polymers ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1206 ◽  
Author(s):  
Maria Stelescu ◽  
Anton Airinei ◽  
Elena Manaila ◽  
Gabriela Craciun ◽  
Nicusor Fifere ◽  
...  
Keyword(s):  
Electron Beam ◽  
Irradiation Dose ◽  
Electron Beam Irradiation ◽  
Contact Angles ◽  
Butyl Rubber ◽  
Attenuated Total Reflection ◽  
Beam Irradiation ◽  
Rubber Composites ◽  
Scanning Calorimetry ◽  
Wide Range

The effects of electron beam irradiation on the properties of ethylene propylene diene monomer (EPDM)/butyl rubber composites in presence of a polyfunctional monomer were investigated by means of differential scanning calorimetry (DSC), thermal analysis, scanning electron microscopy (SEM), attenuated total reflection absorption infrared spectroscopy (ATR-IR), and mechanical and surface energy measurements. The samples were exposed over a wide range of irradiation doses (20–150 kGy). The EPDM matrix was modified with butyl rubber, chlorobutyl rubber, and bromobutyl rubber. The gel content and crosslink density were found to increase with the electron beam irradiation dose. The values of the hardness and modulus increased gradually with the irradiation dose, while the tensile strength and elongation at break decreased with increasing irradiation dose. The EPDM/butyl rubber composites presented a higher thermal stability compared to the initial EPDM sample. The incorporation of butyl rubbers into the EPDM matrix led to an increase in material hydrophobicity. A similar trend was observed when the irradiation dose increased. The greatest change in the surface free energy and the contact angles occurs at an irradiation dose of 20 kGy. The Charlesby–Pinner plots prove the tendency to crosslinking as the irradiation dose increases.

Electron Beam Irradiation Degradation and Biological Treatment of 4-Chlorophenol in Aqueous Solution

2013 ◽  
Vol 848 ◽  
pp. 191-194
Author(s):  
Yan Jiang ◽  
Nai Yan Wang ◽  
Jian Wei Huang ◽  
Tao Hu ◽  
Ming Xin Zhang ◽  
...  
Keyword(s):  
Electron Beam ◽  
Biological Treatment ◽  
Irradiation Dose ◽  
Electron Beam Irradiation ◽  
Sewage Treatment ◽  
Beam Irradiation ◽  
Refractory Organic Matter ◽  
Joint Approach ◽  
Irradiation Technology ◽  
Joint Method

Recently 4-Chlorinatedphenol has been paid great concerns because of their persistency and extreme toxicity in the environment. The recent progresses on irradiation degradation of 4-Chlorinatedphenol is reviewed mainly in the paper.Got the irradiation technology joint approach to treat biological sewage is the most effective way. Polymer of refractory organic matter degradation by joint methods are efficient, the main problems existing in current sewage treatment by this method can simultaneously be solved. Keywords: Electron-beam irradiation; Biological treatment; Irradiation dose; Joint method

Electron-beam irradiation as a quarantine treatment against red mite on exported cut flower of Chrysanthemum

2021 ◽  
Vol 6 (2) ◽  
pp. 47-51
Author(s):  
Thi Ly Nguyen ◽  
Thi The Doan ◽  
Kim Lang Vo Thi ◽  
Van Chung Cao
Keyword(s):  
Electron Beam ◽  
Irradiation Dose ◽  
Room Temperature ◽  
Electron Beam Irradiation ◽  
Developmental Stages ◽  
Observation Time ◽  
Hatching Rate ◽  
Potential Treatment ◽  
Cut Flower ◽  
Beam Irradiation

Utilization of phytosanitary irradiation as a potential treatment to disinfest agricultural commodities in trade has expanded rapidly in the recent years. In this study, red mites (Tetranychus sp) isolated from cut Chrysanthemums were treated by electron beam irradiation at doses of 100, 200, 300 and 400 Gy. After irradiation, they were kept at room temperature to determine the effects of electron beam irradiation on red mite at different developmental stages (eggs, nymphs and adults) and the reproduction of female adults. The results showed that the pattern of tolerance to irradiation in red mite was eggs < 2nd instars < adults, in which the adults were the most tolerance stage. The number of eggs laid by the irradiated female mites and the hatching rate significantly decreased when the irradiation dose increased. The hatching rate of eggs at 300 Gy was 4.25% and no larvae F1 survived during observation time. It could be concluded that 300 Gy is the effective quarantine dose for red mite infesting on cut chrysanthemums.

scholarly journals Influences of Electron Beam Irradiation on the Physical and Chemical Properties of Zearalenone- and Ochratoxin A-Contaminated Corn and In Vivo Toxicity Assessment

Foods ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 376 ◽  
Author(s):  
Xiaohu Luo ◽  
Yuheng Zhai ◽  
Lijun Qi ◽  
Lihong Pan ◽  
Jing Wang ◽  
...  
Keyword(s):  
Electron Beam ◽  
Ochratoxin A ◽  
Irradiation Dose ◽  
Electron Beam Irradiation ◽  
Chemical Properties ◽  
Total Amino Acid ◽  
Physical And Chemical Properties ◽  
Beam Irradiation ◽  
Physical And Chemical ◽  
And Chemical Properties

Electron beam irradiation (EBI) has high energy, no induced radioactivity, and strong degradation capacity toward mycotoxins, such as zearalenone (ZEN) and ochratoxin A (OTA). In this study, we determined EBI’s influence on the physical and chemical properties of corn contaminated with ZEN and OTA. Moreover, the toxicity of corn after EBI was assessed through a mouse experiment. Amylose content and starch crystallinity in corn decreased significantly (p < 0.05) at an irradiation dose higher than 20 kGy. Scanning electron microscopy results revealed that the starch particles of corn began to be crushed at 10 kGy. Essential and total amino acid contents in corn decreased significantly with increasing irradiation dose of EBI (p < 0.05). Feeding EBI-treated corn fodders to mice could significantly improve blood biochemical indexes. The EBI-treated group was not significantly different from the normal corn group and did not display histopathological changes of the liver. EBI treatment can influence the quality of corn to some extent and effectively lower the toxicity of ZEN and OTA in contaminated corn. The results provide a theoretical and practical basis for the processing of EBI-treated corn and its safety.

scholarly journals Influence of Electron Beam Irradiation on Electrical Insulating Properties of PLA with Soft Resin Added †

Polymers ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 898 ◽  
Author(s):  
Katsuyoshi Shinyama
Keyword(s):  
Electron Beam ◽  
Polylactic Acid ◽  
Irradiation Dose ◽  
Electron Beam Irradiation ◽  
Breakdown Strength ◽  
Electric Breakdown ◽  
The Other ◽  
Beam Irradiation ◽  
Other Hand ◽  
Insulating Properties

Polylactic acid (PLA), a bioplastic, is a hard resin, and requires softening in order to be used in electric wire sheaths. A soft resin was added to PLA in order to soften it, but this caused the electric breakdown strength (EB) to decrease. In this study, PLA with soft resin added was irradiated with an electron beam and the influence of the electron beam irradiation on EB was examined. The irradiation dose was set at 100 kGy. At 25 °C, the EB of PLA with no soft resin added decreased due to the irradiation. On the other hand, the EB of PLA with soft resin added showed almost no change due to the irradiation. At 80 °C, the EB of PLA with no soft resin added decreased due to the irradiation, as was the case at 25 °C. On the other hand, the EB of PLA with soft resin added increased due to the irradiation.

The Influence of Acrylic Acid Irradiation Grafting to the Hydrophilicity of Polypropylene Spunbonded Nonwovens

2012 ◽  
Vol 627 ◽  
pp. 125-129 ◽  
Author(s):  
Lei Xia ◽  
Peng Xi ◽  
Bo Wen Cheng
Keyword(s):  
Electron Beam ◽  
Acrylic Acid ◽  
Acid Concentration ◽  
Irradiation Dose ◽  
Electron Beam Irradiation ◽  
Breaking Strength ◽  
Beam Irradiation

The acrylic acid was used as hydrophilic agent, the graft copolyreaction of acrylic acid and polypropylene was occurred under electron beam irradiation to modify the hydrophilicity of the polypropylene spunbonded nonwovens. The influenced of acrylic acid concentration and the irradiation dose to the hydrophilic properties were studied. The results show that for a constant irradiation dose, when the acrylic acid concentration is between 2 % and 10% , the grafting rate and the hydrophilic properties of the polypropylene spunbond nonwovens is first increased and then decreased , and reaches a maximum at the 8%. For a constant acrylic acid concentration, when the irradiation dose is between 10kGy and 50kGy, the grafting rate and the hydrophilic properties of the polypropylene spunbond nonwovens is also first increased and then decreased , and reaches a maximum at the 40kGy. The breaking strength increased with the increasing of the grafting rate, but decreased with the increasing of the irradiation dose

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