Effects of additives on atmospheric pressure gliding arc applied to the modification of polypropylene

Jelínek, Petr; Polášková, Kateřina; Jeník, Filip; Jenikova, Zdenka; Dostál, Lukáš; Dvořáková, Eva; Cerman, J.; Šourková, Hana; Buršı́ková, Vilma; Špatenka, Petr; Zajı́čková, Lenka

doi:10.1016/j.surfcoat.2019.04.035

Cited by 18 publications

(28 citation statements)

References 41 publications

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“…The highest tensile strength (6.3 ± 0.4) MPa was achieved for the PP sample with high N content and a reasonable amount of LMWOMs. This tensile strength value is lower than what we achieved in our previous article [21], in which we utilized a different type of atmospheric pressure plasma discharge and a gliding arc jet with a side gas inlet. For the movement speed of 100 mm/s and two passes, the maximum tensile strength (9.1 ± 0.9) MPa corresponds to elemental surface composition C:O:N = 71:24:5.…”

Section: Adhesioncontrasting

confidence: 59%

“…Thus, our original finding is the correlation between higher adhesion and higher nitrogen functional group content, supposing that the amount of LMWOMs is kept at a similar level. A unique conclusion can be drawn by taking into account our previously published results on the PP treatment with a translational plasma, gliding-arc plasma jet [21]. The higher adhesion strength after PP treatment by the gliding arc is caused by a higher gas temperature that results in local melting of the topmost polymer layer, bonding it better to the PP bulk.…”

Section: Introductionmentioning

confidence: 94%

“…The conditions used for treating the samples are shown in Table 1. The assessment of carbon bonds on the PP surface was based on fitting the XPS C 1s signal, as described in our previous article [21]. The four components of C 1s (Figure 2a) were the following: C-C/CH x (285.0 eV), C-O/-C-N (287.0 ± 0.1) eV, C=O/N-C=O/N=C (288.2 ± 0.1) eV, and O=C-O (289.5 ± 0.1) eV.…”

Section: Surface Chemistry Of Plasma-treated Ppmentioning

confidence: 99%

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Effect of Low Molecular Weight Oxidized Materials and Nitrogen Groups on Adhesive Joints of Polypropylene Treated by a Cold Atmospheric Plasma Jet

et al. 2021

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Polypropylene is a typical representative of synthetic polymers that, for many applications including adhesive joints, requires an increase in wettability and chemical surface reactivity. Plasma processing offers efficient methods for such surface modifications. A particular disadvantage of the plasma jets can be the small plasma area. Here, we present a cold atmospheric plasma radio-frequency slit jet developed with a width of 150 mm applied to polypropylene plasma treatment in Ar, Ar/O2 and Ar/N2 We identified two main parameters influencing the tensile strength of adhesive joints mediated by epoxy adhesive DP 190, nitrogen content, and the amount of low molecular weight oxidized materials (LMWOMs). Nitrogen functional groups promoted adhesion between epoxy adhesive DP 190 and the PP by taking part in the curing process. LMWOMs formed a weak boundary layer, inhibiting adhesion by inducing a cohesive failure of the joint. A trade off between these two parameters determined the optimized conditions at which the strength of the adhesive joint increased 4.5 times. Higher adhesion strength was previously observed when using a translational plasma gliding arc plasma jet with higher plasma gas temperatures, resulting in better cross linking of polymer chains caused by local PP melting.

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Section: Adhesioncontrasting

confidence: 59%

Section: Introductionmentioning

confidence: 94%

Section: Surface Chemistry Of Plasma-treated Ppmentioning

confidence: 99%

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Effect of Low Molecular Weight Oxidized Materials and Nitrogen Groups on Adhesive Joints of Polypropylene Treated by a Cold Atmospheric Plasma Jet

et al. 2021

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“…Given that the plasma site of action is limited to the top few nanometers of the treated substrate, the number of techniques that can be used becomes very restricted to the ones detecting the top surface chemistry. As such, a supremacy of the X-ray photoelectron spectroscopy (XPS) technique is observed over other techniques in the wide literature involving surface characterizations following plasma treatments [20,[25][26][27][28][29]. Therefore, in what follows, a brief synopsis of the used techniques will be first given.…”

Section: Introductionmentioning

confidence: 99%

Chemical characterization of plasma-activated polymeric surfaces via XPS analyses: A review

Ghobeira

Tabaei

Morent

2022

Surfaces and Interfaces

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“…However, corona discharge treatment is associated with lower overall plasma density, which results in decreasing the rate and degree of the ionization of the molecules. The gliding arc is a promising method for the quick and efficient plasma treatment of the polymer surface due to a high concentration of reactive radicals available for the treatment [ 29 ].…”

Section: Introductionmentioning

confidence: 99%

Reactive Magnetron Plasma Modification of Electrospun PLLA Scaffolds with Incorporated Chloramphenicol for Controlled Drug Release

et al. 2022

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Surface modification with the plasma of the direct current reactive magnetron sputtering has demonstrated its efficacy as a tool for enhancing the biocompatibility of polymeric electrospun scaffolds. Improvement of the surface wettability of materials with water, as well as the formation of active chemical bonds in the near-surface layers, are the main reasons for the described effect. These surface effects are also known to increase the release rate of drugs incorporated in fibers. Herein, we investigated the effect of plasma modification on the chloramphenicol release from electrospun poly (lactic acid) fibrous scaffolds. Scaffolds with high—50 wt./wt. %—drug content were obtained. It was shown that plasma modification leads to an increase in the drug release rate and drug diffusion coefficient, while not deteriorating surface morphology and mechanical properties of scaffolds. The materials’ antibacterial activity was observed to increase in the first day of the experiment, while remaining on the same level as the unmodified group during the next six days. The proposed technique for modifying the surface of scaffolds will be useful for obtaining drug delivery systems with controlled accelerated release, which can expand the possibilities of local applications of antibiotics and other drugs.

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Effects of additives on atmospheric pressure gliding arc applied to the modification of polypropylene

Cited by 18 publications

References 41 publications

Effect of Low Molecular Weight Oxidized Materials and Nitrogen Groups on Adhesive Joints of Polypropylene Treated by a Cold Atmospheric Plasma Jet

Effect of Low Molecular Weight Oxidized Materials and Nitrogen Groups on Adhesive Joints of Polypropylene Treated by a Cold Atmospheric Plasma Jet

Chemical characterization of plasma-activated polymeric surfaces via XPS analyses: A review

Reactive Magnetron Plasma Modification of Electrospun PLLA Scaffolds with Incorporated Chloramphenicol for Controlled Drug Release

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