Corona Discharge Treatment of Polyolefins

Sutherland, Ian; Popat, Rohit P.; Brewis, D.M.; Calder, R.

doi:10.1080/00218469408026651

Cited by 37 publications

(17 citation statements)

References 15 publications

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“…The possibility of decreasing the rate of decay by increasing the treatment tirne was discussed in the same study. Sutherland et al [69] showed that aging has a negative effect on the work of adhesion for corona treated PE samples. Our results show a 20% reduction in surface tension over a 7-day period.…”

Section: R E D I S and Discussion 4-imentioning

confidence: 99%

Adhesion and durability of latex paint on wood fiber reinforced polyethylene

Akhtarkhavari

Kortschot

Spelt

2004

Progress in Organic Coatings

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The author bas granted a nonexclusive licence allowing the National Library of Canada to reproduce, loan, distribute or sell copies of this thesis in microfom, paper or electronic formats. L'auteur a accordé une licence non exclusive permettant à la Bibliothèque nationale du Canada de reproduire, prêter, distribuer ou vendre des copies de cette thèse sous la forme de microfiche/tilm, de reproduction sur papier ou sur format électronique. The author retains ownership of the L'auteur conserve la propriété du copyright in îhis thesis. Neither the droit d'auteur qui protège cette thèse. thesis nor substantial extracts from it Ni la thèse ni des extraits substantiels may be printed or otherwise de celle-ci ne doivent être imprimés reproduced without the author's ou autrement reproduits sans son permission. autorisation.

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Section: R E D I S and Discussion 4-imentioning

confidence: 99%

Adhesion and durability of latex paint on wood fiber reinforced polyethylene

Akhtarkhavari

Kortschot

Spelt

2004

Progress in Organic Coatings

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“…Figure 1b displays the apparatus of corona charging treatment. The treatment method and process were well described by Sutherland et al [17] and Mittal and Pizzi [18] presenting a modified continuous type equipment to allow a small amount of samples on a flat electrode plate to be treated, with the arc struck in a very thin space gap between the plate and moving mesh grid electrode above it. The airtight chamber was heated to 608C during corona charging procedure.…”

Section: Methodsmentioning

confidence: 99%

“…Thermal poling in silicon oil is a conventional method to improve the properties of PVDF utilized by Wang et al [13] and Ye et al [14], and corona charging has been widely used for the surface modification of polymers and metals [15][16][17]. Whereas it is imperative to study the characteristics of polarized treated films in detail, few studies dealing with thermal poling and corona charging treatments of PVDF have been presented.…”

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confidence: 99%

Study of thermally poled and corona charged poly(vinylidene fluoride) films

Jiang

et al. 2007

Polymer Engineering & Sci

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The effect of thermal poling and corona charging on the structure and characteristics of poly(vinylidene fluoride) films (PVDF) was investigated. The structure and chemical change of PVDF films with different polarizing treatments was examined using Fourier transform infrared spectroscopy and X‐ray photoelectron spectroscopy, respectively. The characteristics including piezoelectric coefficients, ferroelectric hysteresis, and leakage current were measured. It was found that both polarized methods contribute to dramatic improvement on the piezoelectricity and ferroelectricity of PVDF films, while thermal poling leads to structure change with the generation of new carbon composition. The reason to cause leakage current was also analyzed. POLYM. ENG. SCI., 47:1344–1350, 2007. © 2007 Society of Plastics Engineers

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“…This indicates that fluorine atoms are extensively depleted and oxygen-containing functional groups are formed in the vicinity of the PTFE surfaces. [ 19] Subsequently, when MAA was photografted onto the plasma-treated PTFE plates, the O 1 s/C i s value increased with an increase in the grafted amount, and then leveled off at 0.3 µmol/cm2. 0n the other hand, the O1 s/Cl s values for grafted LDPE and HDPE plates were kept constant at 20 µmol/Cm2 and 10 µmol/cm2, respectively.…”

Section: Bulk Properties Of the Grafted Layersmentioning

confidence: 99%

Surface Modification and Autohesive Properties of Poly(tetrafluoroethylene) and Polyethylene by the Photografting Technique.

Yamada

Kimura

Hirata

1998

J. Photopol. Sci. Technol.

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Poly(tetrafluoroethylene) (PTFE) and low and high density polyethylene (LDPE and HDPE) plates were surface-modified by the photogafting of methacrylic acid (MAA) using a 400 W high pressure mercury lamp. The autohesive strengths for MAA-graftedPTFE, LDPE and HDPE plates were estimated from the tensile shear strength measurements and their autohesive properties were discussed in relation to surface and bulk properties of the grafted layers formed on their substrates.The contact angles which were related with the wettabilities of the modified surfaces increased with an increase in the grafted amount, and then leveled off when the surfaces were wholly covered with grafted PMAA chains.The wettabilities for grafted PTFE plates were improved at a considerably low grafted amount, since the photografting of MAA onto the PTFE plates was most restricted to the outer surface region among the three types of substrates used in this study. The grafted LDPE and HDPE plates possessed high water-absorptivities. The autohesive strengths for graftedPTFE plates immersed in water reached the value equivalent to their adhesive ones.For the gratedPTFE plates immersed in an aqueous HCl solution of pH 3 in place of water, the autohesive strength sharply inch in the range of lower grafted amounts.These results suggest that an increase in the autohesive strength can be caused not only by the entanglements of graftedPMAA chains but also by the formation of hydrogen bonding between carboxyl groups affixed to the grafted PMAA chains. On the other hand, in the case of the autohesive strength measurements for graftedLDPE and HDPE plates, the substrate breaking occurred at higher grafted amounts. The grafted amount at which the substrate failed for grafted HDPE plates was lower than that for grafted LDPE plate because the photografting onto the HDPE plates was more restricted to the outer surface region.It was made clear that the autohesive strength for grafted PTFE plates reached the value equivalent to the autohesive strength and the autohesive strengths for graftedLDPE and HDPE plates exceeded the ultimate tensile strength by heat pressing the grafted samples with the grafted layers swollen in water.

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Corona Discharge Treatment of Polyolefins

Cited by 37 publications

References 15 publications

Adhesion and durability of latex paint on wood fiber reinforced polyethylene

Adhesion and durability of latex paint on wood fiber reinforced polyethylene

Study of thermally poled and corona charged poly(vinylidene fluoride) films

Surface Modification and Autohesive Properties of Poly(tetrafluoroethylene) and Polyethylene by the Photografting Technique.

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