Surface functionalization of polypropylene using a cold atmospheric pressure plasma jet with gas water mixtures

Kehrer, Matthias; Duchoslav, Jiri; Hinterreiter, Andreas; Mehic, Alen; Stehrer, T.; Stifter, David

doi:10.1016/j.surfcoat.2019.125170

Cited by 33 publications

(31 citation statements)

References 42 publications

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“…In general, polar and reactive groups such as hydroxyl, carboxyl, (hydro)peroxides, esters and amine are formed at the surface of polymeric materials by air plasma treatment [44,45]. We suppose that similar behavior occurs in case of γ-irradiation, which was also performed in air, and it is characterized by higher energy radiation and deeper penetration than plasma treatment.…”

Section: Wavenumber CMmentioning

confidence: 94%

Application of Vegetal Oils in Developing Bioactive Paper-Based Materials for Food Packaging

et al. 2021

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A major disadvantage of conventional food packaging materials is the difficulty in disposal and recycling, due to their high stability to environmental and thermal stress. The trend now is to develop new eco-friendly food packaging that can substitute fossil fuel derived materials. Cellulose, the main constituent of paper-based food packages, is a favorable starting material for such purpose. In this study we present a new method to obtain bioactive paper based materials suitable for food packaging applications. By combining eco-friendly activation processes (cold plasma or gamma irradiation) and bioactive plant oils (clove essential oil and rosehip seeds vegetal oil) for modification of kraft paper, new materials with antioxidant and antibacterial activity were obtained. The oil-loaded bioactive paper based materials presented increased hydrophobicity (from 97° in the case of kraft paper to 115° for oil-loaded sample) and decreased water adsorption (a one-quarter decrease). Due to differential interactions with the functional groups of plant oils, the modified kraft paper presents different antibacterial and antioxidant properties. Essential clove oil imprinted higher antioxidant activity (owing to the high content in eugenol and eugenol acetate phenolic compounds and were more efficient in reducing the bacterial growth on fresh beef meat and especially on fresh curd cheese. The cold pressed rosehip seeds oil acted as aslightly better antibacterial agent against Listeria monocytogenes (+), Salmonella enteritidis (-) and Escherichia coli (-) bacterial strains. Thus, the newly developed bioactive paper could be used as effective packaging material that can help preserving food quality for longer time.

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Section: Wavenumber CMmentioning

confidence: 94%

Application of Vegetal Oils in Developing Bioactive Paper-Based Materials for Food Packaging

et al. 2021

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“…Throughout the years, several different non-thermal plasma discharges were used to treat polypropylene, namely low pressure [13][14][15], corona and dielectric barrier discharges (DBD) [16], and cold atmospheric plasma (CAP) jets [17,18]. The adhesion between a plasma-treated polymer and an adhesive is a complicated process influenced primarily by a combination of three main parameters, functional groups composition and concentration, surface morphology, and the amount of the light molecular weight oxidized matter (LMWOM).…”

Section: Introductionmentioning

confidence: 99%

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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“…Another major site of modification is the surfaces of the polymers. Dry surface treatment techniques e.g., corona discharges [3], oxygen plasma [4], ultraviolet light-ozone [5], and cold atmospheric jet [6] have been applied for improving polymer/polymer or polymer/ceramic adhesions. To make corrections in the polymer surfaces, wettability properties of polymers can be altered to govern the adhesion of various coatings.…”

Section: Introductionmentioning

confidence: 99%

Functionalization of Polymers and Nanomaterials for Biomedical Applications: Antimicrobial Platforms and Drug Carriers

et al. 2020

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The use of polymers and nanomaterials has vastly grown for industrial and biomedical sectors during last years. Before any designation or selection of polymers and their nanocomposites, it is vital to recognize the targeted applications which require these platforms to be modified. Surface functionalization to introduce the desired type and quantity of reactive functional groups to target a cell or tissue in human body is a pivotal approach to improve the physicochemical and biological properties of these materials. Herein, advances in the functionalized polymer and nanomaterials surfaces are highlighted along with their applications in biomedical fields, e.g., antimicrobial therapy and drug delivery.

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Surface functionalization of polypropylene using a cold atmospheric pressure plasma jet with gas water mixtures

Cited by 33 publications

References 42 publications

Application of Vegetal Oils in Developing Bioactive Paper-Based Materials for Food Packaging

Application of Vegetal Oils in Developing Bioactive Paper-Based Materials for Food Packaging

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

Functionalization of Polymers and Nanomaterials for Biomedical Applications: Antimicrobial Platforms and Drug Carriers

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