Corona treatment applied to synthetic polymeric monofilaments (PP, PET, and PA-6)

Louzi, Vitor César; Campos, Jocileide Sales

doi:10.1016/j.surfin.2018.12.005

Cited by 49 publications

(30 citation statements)

References 25 publications

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“…These values were higher than those previously measured for plastic films. The reported values of SFE for LD-PE, PP, and PLA were 35.3 mJ∙m −2 [ 56 ], 32.3 mJ∙m −2 [ 57 ], and 49.7 mJ∙m −2 [ 55 ], respectively. The value of the polar component of the SFE was much lower than the values of the dispersive component, regardless of the presence of polar groups, like hydroxyl groups, which are responsible for polar interaction with polar liquids.…”

Section: Resultsmentioning

confidence: 99%

The Influence of Starch Origin on the Properties of Starch Films: Packaging Performance

Żołek‐Tryznowska

Kałuża

2021

Materials

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Starch films can be used as materials for food packaging purposes. The goal of this study is to compare how the starch origin influence the selected starch film properties. The films were made from various starches such as that from maize, potato, oat, rice, and tapioca using 50%w of glycerine as a plasticizer. The obtained starch-based films were made using the well-known casting method from a starch solution in water. The properties of the films that were evaluated were tensile strength, water vapour transition rate, moisture content, wettability, and their surface free energy. Surface free energy (SFE) and its polar and dispersive components were calculated using the Owens-Wendt-Rabel-Kaelbe approach. The values of SFE in the range of 51.64 to 70.81 mJ∙m−2 for the oat starch-based film and the maize starch-based film. The films revealed worse mechanical properties than those of conventional plastics for packaging purposes. The results indicated that the poorest tensile strength was exhibited by the starch-based films made from oat (0.36 MPa) and tapioca (0.78 MPa) and the greatest tensile strength (1.49 MPa) from potato.

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Section: Resultsmentioning

confidence: 99%

The Influence of Starch Origin on the Properties of Starch Films: Packaging Performance

Żołek‐Tryznowska

Kałuża

2021

Materials

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“…The absorption peak of 1110-1300 cm −1 belongs to ester group (C-O) [30]. The absorption peak at 1537-1858 cm −1 corresponds to carbonyl absorption peak [30], the absorption peak at 1350 cm −1 belongs to nitrate absorption peak, and the broad absorption peak at 3100-3600 cm −1 comes from the amino group and hydroxyl group absorption peak [31,32]. These new absorption peaks can be attributed to the crack of chemical bonds (e.g., methyl and methylene) on the surface of BOPP film, which are caused by corona discharge treatment and the formation of free radicals.…”

Section: The Analysis Of the Surface Chemical Structure Of Corona Bop...mentioning

confidence: 99%

Study on the Behavior of BOPP Film Treated by Corona Discharge

2020

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Corona discharge is widely used as a good surface pretreatment method for polymer materials. In this work, the attenuated total reflectance Fourier transform infrared spectrometry (ATR-FTIR), X-ray photoelectron spectroscopy (XPS), scanning electronic microscopy (SEM), and atomic force microscopy (AFM) were used to investigate the behavior of biaxially oriented polypropylene (BOPP) film treated by corona discharge. The possibly involved chemical reactions during the corona treatment process under atmosphere components were systematically summarized. This work lays a theoretical basis for improving the performance of BOPP films and expanding their application fields.

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“…These excited and ionized particles carry enough energy to induce chemical reactions at the interface with solid surfaces that change the properties of materials [ 11 ]. In this sense, corona discharge is widely used and has been proven effective in modifying the surface properties of materials but sometimes it has the disadvantage of generating plasma over a small area and the treatment performed can be inhomogeneous [ 12 ]. To avoid technical complications that may occur, a dielectric barrier discharge (DBD) is used [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Treatment of Polymeric Films Used for Printed Electronic Circuits Using Ambient Air DBD Non-Thermal Plasma

et al. 2022

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This study aims to present the properties of the polymeric films after being subjected to DBD plasma treatment in atmospheric conditions. Three different commercial films of polyester (Xerox Inkjet transparencies and Autostat CUS5 Clear film) and polycarbonate (Lexan™ 8010 MC) have been considered for the tests. The surface wettability has been evaluated based on static water contact angle (WCA) for different treatment times varying between 0.2 s and 30 s, the results revealing a maximum WCA decrease compared to a pristine of up to 50% for Xerox films, 75% for Autostat and 70% for Lexan. The persistence of the hydrophilic effect induced by the plasma treatment has also been verified for up to 72 h of storage after treatment, the results indicating a degradation of the treatment effects starting with the first hours after the treatment. The WCA stabilizes to a value inferior to the one corresponding to pristine in the first 24 h after plasma treatment. The adhesion forces, as well as preliminary surface morphology evaluations have been determined for the considered films using atomic force microscopy (AFM). The adhesion forces are increased together with the prolongation of the plasma treatment application time, varying from initial values of 165 nN, 58 nN and 204 nN to around 390 nN, 160 nN and 375 nN for Xerox, Autostat and Lexan films, respectively, after 5 s of DBD treatment. For the considered materials, the results revealed that the plasma treatment determines morphological changes of the surfaces indicating an increase in surface roughness.

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Corona treatment applied to synthetic polymeric monofilaments (PP, PET, and PA-6)

Cited by 49 publications

References 25 publications

The Influence of Starch Origin on the Properties of Starch Films: Packaging Performance

The Influence of Starch Origin on the Properties of Starch Films: Packaging Performance

Study on the Behavior of BOPP Film Treated by Corona Discharge

Treatment of Polymeric Films Used for Printed Electronic Circuits Using Ambient Air DBD Non-Thermal Plasma

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