Preliminary study on application PE filler modified by radiation

Legocka, I.; Zimek, Z.; Mirkowski, K.; Nowicki, Andrzej

doi:10.1016/s0969-806x(99)00448-x

Cited by 9 publications

(4 citation statements)

References 4 publications

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“…Ionizing radiations with low energies such as the e-beams, γ-radiations, x-rays, UV-radiations as well as low energy ion (LEI) beams have been used since 1950s for polymer modifications and these polymers have been used for different applications such as wire insulations, heat-shrink products, curing of coatings and inks, production of tubing, pipes and automobile tyres, enhancing processibility of polymers for incorporation in coatings and inks, sterilization, etc. [3,[21][22][23][24][25][26][27][28]. In biomedical science, hydrogels cross-linked and sterilized by irradiation have been successfully commercialized for application in burns and wounds [29][30][31].…”

Section: Radiation Damage Effects In Solidsmentioning

confidence: 99%

Ion Irradiation Effects in some Electro-Active and Engineering Polymers Studies by Conventional and Novel Techniques

Banerjee

Deka

Kumar

et al. 2013

DDF

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The effect of various radiations to a polymer is more complex and intense, compared to that in other materials, in view of the more complex structure and low bonding energies (5 10 eV for covalent bonds of the main carbon chain). Since the energy delivered to the polymer in most irradiations (including even beta and gamma rays of 1 to 10 MeV) exceeds this energy by many orders of magnitude, there is a high risk of radiation damage to all kind of polymers. However, engineering polymers (PC, PMMA, PVC, etc. and newer ones) as well as electro-active and other functional polymers (conducting polymers, polymer electrolytes) are finding ever increasing applications, often as nanocomposites, e.g. chemical and biomedical applications, sensors, actuators, artificial muscles, EMI shielding, antistatic and anticorrosion coatings, solar cells, light emitters, batteries and supercapacitors. Critical applications in spacecrafts, particle accelerators, nuclear plants etc. often involve unavoidable radiation environments. Hence, we need to review radiation damage in polymers and encourage use of newer tools like positron annihilation spectroscopy, micro-Raman spectroscopy and differential scanning calorimetry (DSC). Present review focuses on irradiation effects due to low energy ions (LEIs) and swift heavy ions (SHIs) on electro-active and engineering polymers, since gamma-and electron-beam-irradiations have been more widely studied and reviewed. Radiation damage mechanisms are also of great theoretical interest. Contents

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Section: Radiation Damage Effects In Solidsmentioning

confidence: 99%

Ion Irradiation Effects in some Electro-Active and Engineering Polymers Studies by Conventional and Novel Techniques

Banerjee

Deka

Kumar

et al. 2013

DDF

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“…The challenge today in the applicability of metal oxides in their role as fillers is to modify them in order to improve the properties of systems in which they are already in use, and secondly, to open avenues for a wider range of applications in the future [9][10][11].…”

Section: Advantages Of Metal Oxides As Polymer Fillersmentioning

confidence: 99%

Modified main groups metal oxides as potential active fillers for polymers

Kijeński¹,

Osawaru²

2006

Polimery

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The demand for polymers exhibiting special properties has necessitated the modification of metal oxide polymer fillers currently in use to obtain adequate filling characteristics. Recent developments in the literature (also from the authors), in which the advantages of the applications of metal oxides as polymer fillers with special consideration of the dependence of their properties on origin and thermal treatment are presented. The acid-base and donor-acceptor properties of this group of fillers and also the dependence of their properties on electronic parameters is discussed in detail. The use of practical methods of oxide modification, such as precipitation, coprecipitation, gelation and impregnation is further discussed. The importance of defects in the oxide structure and the acidic properties resulting from their activity is presented. The possibility of application of these oxides in synthesizing organic/inorganic hybrid materials is also discussed.

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“…The obtained results proved the assumption that the crosslinking efficiency depends to a large extent on the type of LDPE and irradiation dose. 16 Therefore, the improvement in the crosslinking efficiency of the different LDPE samples will eventually affected by (1) chemical structure of LDPE samples, (2) physical properties such as density, melt flow rate, and crystallinity of LDPE samples, and (3) addition of 9 wt% EMA resin as LDPE modifier. In this regard, the highest level of improvement in physical and chemical properties for PE 5 and PE 6 samples can be attributed to the lowest values of melt flow rate and density in comparison to the other two LDPE batches (including PE 1, PE 2, PE 3, and PE 4).…”

Section: Gel Formationmentioning

confidence: 99%

“…Ethylene vinyl acetate (EVA), ethylene butyl acrylate (EBA), and ethylene/methacrylic acid resin (EMA) are used as an additive or modifier and or crosslinking agent with LDPE to improve the irradiation crosslinking performance of LDPE. 13,16 Legocka et al 16 used ionomeric resin based on ethylene/methacrylic acid as a crosslinking promoter and modifier for LDPE. It was found that the application of ionomeric EMA resin as an LDPE modifier allows obtaining homogeneous blends with excellent physical and chemical properties.…”

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Effect of metal salt of ethylene/methacrylic acid copolymer on electron beam crosslinking of low density polyethylene

Ali¹,

Legocka

2005

Adv Polym Technol

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ABSTRACT:A thermoplastic resin based on ethylene/methacrylic acid copolymer (EMA) was used as a modifier for different low density polyethylene (LDPE) batches under the effect of electron beam irradiation. The EMA resin was used in the zinc metal form at a constant ratio of 9 wt% in all preparations. The effect of EMA resin as a crosslinking agent was characterized by percentage gel fraction, tensile mechanical, and differential scanning calorimetry (DSC). In this study, the maximum gel content (G max ) and gelling dose (D gel ) parameters were determined by applying the familiar Charlesby-Pinner relationship. The results showed that the gel content for all investigated samples gradually increases with increasing irradiation dose. The modified LDPE batches with EMA show higher gel content than unmodified ones at any irradiation dose. Also, the gel content of all LDPE composites decreases as a result of post-storage effect. The mechanical properties (tensile strength and elongation at break) exhibit significant change as a result of irradiation and blending the LDPE batch with EMA. The level of

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Preliminary study on application PE filler modified by radiation

Cited by 9 publications

References 4 publications

Ion Irradiation Effects in some Electro-Active and Engineering Polymers Studies by Conventional and Novel Techniques

Ion Irradiation Effects in some Electro-Active and Engineering Polymers Studies by Conventional and Novel Techniques

Modified main groups metal oxides as potential active fillers for polymers

Effect of metal salt of ethylene/methacrylic acid copolymer on electron beam crosslinking of low density polyethylene

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