Effect on wettability of the topography and oxidation state of biaxially oriented poly(propylene) film

Strobel, Mark; Strobel, Joan M.; Jones, Viv; Lechuga, Hyacinth; Lyons, Christopher S.

doi:10.1080/01694243.2019.1604304

Cited by 5 publications

(5 citation statements)

References 24 publications

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“…As mentioned above, the plasma of atmospheric PSJ was filamentary, and thus the treatment was not perfectly homogeneous. Small local domains of PP fabric could remained untreated, affecting the measured WCAs highly sensitive to the lower-energy part of surface areas [ 58 ]. A slightly less hydrophobic surface was achieved after treatment with the Ar+N

mixture (113.7

versus 116.5°, Figure S3a,c ) which can be associated with a higher amount of oxygen compared to the Ar treatment, but the difference is not significant.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Adhesion of Electrospun Polycaprolactone Nanofibers to Plasma-Modified Polypropylene Fabric

et al. 2023

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Excellent adhesion of electrospun nanofiber (NF) to textile support is crucial for a broad range of their bioapplications, e.g., wound dressing development. We compared the effect of several low- and atmospheric pressure plasma modifications on the adhesion between two parts of composite—polycaprolactone (PCL) nanofibrous mat (functional part) and polypropylene (PP) spunbond fabric (support). The support fabrics were modified before electrospinning by low-pressure plasma oxygen treatment or amine plasma polymer thin film or treated by atmospheric pressure plasma slit jet (PSJ) in argon or argon/nitrogen. The adhesion was evaluated by tensile test and loop test adapted for thin NF mat measurement and the trends obtained by both tests largely agreed. Although all modifications improved the adhesion significantly (at least twice for PSJ treatments), low-pressure oxygen treatment showed to be the most effective as it strengthened adhesion by a factor of six. The adhesion improvement was ascribed to the synergic effect of high treatment homogeneity with the right ratio of surface functional groups and sufficient wettability. The low-pressure modified fabric also stayed long-term hydrophilic (ten months), even though surfaces usually return to a non-wettable state (hydrophobic recovery). In contrast to XPS, highly surface-sensitive water contact angle measurement proved suitable for monitoring subtle surface changes.

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mixture (113.7

versus 116.5°, Figure S3a,c ) which can be associated with a higher amount of oxygen compared to the Ar treatment, but the difference is not significant.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Adhesion of Electrospun Polycaprolactone Nanofibers to Plasma-Modified Polypropylene Fabric

et al. 2023

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“…[ 39 ] On any commercial synthetic polymers, there is always a contact angle hysteresis (ACA

\gt

RCA). [ 40 ] The hysteresis of our untreated PP was

{(22\pm 3)}^{\circ }

. It is likely a result of a combination of surface roughness and polypropylene semi‐crystalline character, with the crystalline regions acting as the higher energy and amorphous regions as the lower energy components of the surface.…”

Section: Resultsmentioning

confidence: 99%

“…It is likely a result of a combination of surface roughness and polypropylene semi‐crystalline character, with the crystalline regions acting as the higher energy and amorphous regions as the lower energy components of the surface. [ 40 ] The WCA hysteresis remained unchanged or even decreased after the PT‐RPJ treatment at 5 or 10 mm of the axial distance between the sample surface and the nozzle, pointing to excellent treatment uniformity.…”

Section: Resultsmentioning

confidence: 99%

“…The remaining two PT‐RPJ treated samples, PT‐2 and PT‐3, had similar surface atomic compositions yet different WCAs. The PT‐3 sample, treated at a higher distance from the nozzle (20 mm) using the lower treatment time, had slightly higher contact angles that might be a result of a lower treatment uniformity, distinguishable by WCA due to its sensitivity to sub‐µm heterogeneities [ 40 ] but not by the area‐averaged XPS measurement. The likelihood of the PT‐3 sample having higher treatment nonuniformity than the PT‐2 sample is further supported by the higher value of WCA hysteresis (Figure 2).…”

Section: Resultsmentioning

confidence: 99%

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Comparing efficiencies of polypropylene treatment by atmospheric pressure plasma jets

Polášková

Özkan

Klíma

et al. 2023

Plasma Processes & Polymers

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Plasma treatment of polypropylene (PP) is a well‐established method of improving its surface properties. However, the efficiencies of different plasma discharges are seldom compared. Herein, we discuss the differences in PP treated by three arc‐based commercial plasma jets working in dry air, Plasmatreat rotating plasma jet (PT‐RPJ), AFS PlasmaJet® (AFS‐PJ), and SurfaceTreat gliding arc jet (ST‐GA), and by the low‐temperature RF plasma slit jet (RF‐PSJ) working in argon. The AFS‐PJ has a significantly different reactive species composition dominated by nitrogen oxides. It induced higher thermal loads leading to surface damage. The other arc‐based jets (PT‐RPJ and ST‐GA) created the PP surface with higher oxygen and nitrogen concentration than the low‐temperature RF‐PSJ. It induced a higher adhesion strength measured on PP‐aluminum joints.

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“…The results from the AFM measurement revealed the low degree of roughness of raw BOPP foil with a value of 5.0 nm comparable to other papers. Strobel et al [ 23 ] observed RMS roughness values in the range 2.3–4.3 nm for various types of BOPP differing in orientation. Another paper by Chen et al [ 24 ] measured RMS roughness of 3.8 nm, and Darvish et al [ 25 ] published roughness of BOPP film with a value of 6.8 nm.…”

Section: Resultsmentioning

confidence: 99%

Changes in Surface Characteristics of BOPP Foil after Treatment by Ambient Air Plasma Generated by Coplanar and Volume Dielectric Barrier Discharge

et al. 2021

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Biaxially oriented polypropylene (BOPP) is a highly transparent polymer defined by excellent mechanical and barrier properties applicable in the food packaging industry. However, its low surface free energy restricts its use in many industrial processes and needs to be improved. The presented study modifies a BOPP surface using two different atmospheric-pressure plasma sources operating in ambient air and capable of inline processing. The volume dielectric barrier discharge (VDBD) and diffuse coplanar surface barrier discharge (DCSBD) were applied to improve the wettability and adhesion of the 1–10 s treated surface. The changes in morphology and surface chemistry were analyzed by SEM, AFM, WCA/SFE, and XPS, and adhesion was evaluated by a peel force test. Comparing both plasma sources revealed their similar effect on surface wettability and incorporation of polar functional groups. Additionally, higher surface roughness in the case of VDBD treatment contributed to slightly more efficient adhesion in comparison to DCSBD. Although we achieved comparable results for both plasma sources in the term of enhanced surface wettability, degree of oxidation, and stability of induced changes, DCSBD had less effect on the surface deterioration than VDBD, where surface structuring caused an undesirable haze.

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Effect on wettability of the topography and oxidation state of biaxially oriented poly(propylene) film

Cited by 5 publications

References 24 publications

Enhanced Adhesion of Electrospun Polycaprolactone Nanofibers to Plasma-Modified Polypropylene Fabric

Enhanced Adhesion of Electrospun Polycaprolactone Nanofibers to Plasma-Modified Polypropylene Fabric

Comparing efficiencies of polypropylene treatment by atmospheric pressure plasma jets

Changes in Surface Characteristics of BOPP Foil after Treatment by Ambient Air Plasma Generated by Coplanar and Volume Dielectric Barrier Discharge

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