The radiation crosslinking of ethylene copolymers

Burns, N.M.

doi:10.1016/0146-5724(79)90115-8

Cited by 19 publications

(3 citation statements)

References 15 publications

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“…Gordiichuk and Gordineko, 3 examined the radiation effects of LDPE/EVA (EVA Յ 30%) blends in EB irradiation and found that the EVA had a sensitive effect on the radiation crosslinking of LDPE/EVA blends. EVA had superior crosslinking to LDPE in EB irradiation 8 and it was predictable and reasonable that the higher radiation crosslinkable EVA had a sensitive effect on the lower radiation crosslinkable LDPE. In our experimental condition, irradiated by ␥-ray in air, the lower crosslinkable EVA has an enhancement effect of the radiation crosslinking on the higher crosslinkable LDPE.…”

Section: Gel Contentmentioning

confidence: 99%

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Radiation effects on LDPE/EVA blends

Dalai

Chen

2002

J of Applied Polymer Sci

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Radiation effects of low-density polyethylene/ethylene-vinyl acetate copolymer (LDPE/EVA) blends were discussed. EVA content in the LDPE/EVA blends was an enhancement effect on radiation crosslinking of LDPE/ EVA blends, and the highest radiation crosslinking was obtained when the EVA content was reached at 30% when irradiated by ␥-ray in air. The phenomenon was discussed with the compatibility, morphology, and thermal properties of LDPE/EVA blends and found that the enhanced radiation crosslinking of the LDPE/EVA blends was proportional to the good compatibility, the increasing degree of the amorphous region's content of the LDPE/EVA blends, and the vinyl acetate content of EVA. We also found that the vinyl acetate of EVA in the blends is easily oxidized by ␥-ray irradiation in air. The possible radiation crosslinking and degradation mechanism of LDPE/EVA blends was discussed quantitatively with a novel method "step-analysis" process of irradiated LDPE/EVA blends in the thermal gravimetric analysis (TGA) technique

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Section: Gel Contentmentioning

confidence: 99%

“…11 Higher amorphous content is favorable to the radiation crosslinking of polymer, especially for high dose rate irradiation, such as electron beam (EB). 8 The radiation crosslinking is lowered by oxidation of polymer during the irradiation in the air, especially for irradiation by low dose rate, such as ␥-ray, as shown in Figure 1.…”

Section: Morphologymentioning

confidence: 99%

Radiation effects on LDPE/EVA blends

Dalai

Chen

2002

J of Applied Polymer Sci

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“…Ethylene copolymers are most often chosen for these applications because of their superior retention of physical properties. 15 Spenadel et al 13 in 1975, found that by blending 10-30 wt% rubber into polyethylene they could produce a wire insulation that is more flexible and thus easier to install and splice. 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.…”

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confidence: 98%

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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Fundamentals of Radiation Crosslinking

Makuuchi¹,

Cheng²

2011

Radiation Processing of Polymer Materials and Its Industrial Applications

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The radiation crosslinking of ethylene copolymers

Cited by 19 publications

References 15 publications

Radiation effects on LDPE/EVA blends

Radiation effects on LDPE/EVA blends

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

Fundamentals of Radiation Crosslinking

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