Reactive wetting of polyethylene on ethylene-propylene-diene terpolymer

Laing, Brittany; Seveno, David; Keyzer, Jozefien De; Bael, Albert Van

doi:10.1016/j.colcom.2020.100343

Cited by 5 publications

(3 citation statements)

References 28 publications

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“…Only in this endeavor may one eliminate sophisticated factors (such as contact angle hysteresis and interfacial adsorption) that obscure the understanding of experimental results. However, in many cases, the interdiffusion or chemical reaction of spreading liquids with the solid surface is expected, for example, the aqueous coating of gelatin subbing layers to manufacture photographic films, the formation of intermetallics of Sn/Cu or Al/Ni during soldering, , and the reaction injection molding of thermoset rubbers with thermoplastics . These works highlight the significance of reactive wetting in many practical situations and the complex physiochemical interactions of these liquid/solid systems. , …”

Section: Introductionmentioning

confidence: 99%

“…However, in many cases, the interdiffusion or chemical reaction of spreading liquids with the solid surface is expected, for example, the aqueous coating of gelatin subbing layers to manufacture photographic films, 5 the formation of intermetallics of Sn/Cu or Al/Ni during soldering, 6,7 and the reaction injection molding of thermoset rubbers with thermoplastics. 8 These works highlight the significance of reactive wetting in many practical situations and the complex physiochemical interactions of these liquid/ solid systems. 9,10 To understand the underlying mechanism of contact line displacement, the wetting process is often analyzed by the hydrodynamic approach (HD) or molecular-kinetic theory (MKT).…”

Section: Introductionmentioning

confidence: 99%

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Reactive Spreading Dynamics of Molten Polymer Liquids

Zhang

Guo

et al. 2023

Macromolecules

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Despite the key to the adhesion between polymers and a plethora of materials, our understanding of reactive wetting is still rudimentary. In the present work, we report the reactive wetting dynamics of molten maleic anhydride-grafted polypropylene (MA-g-PP) liquids modeled by molecular-kinetic theory (MKT). The dependencies of the contact line friction (ζ) and viscosity (η) were compared for reactive and nonreactive wetting polymer systems. Compared with linear dependencies of ζ and η for the nonreactive wetting systems, the reactive wetting system presented a nonlinear relationship. In the capillary regime, the chemistry-affected regime is followed by a regime that is nearly not affected by chemical reactions, which is identified by the linear MKT. The formation of a new interface and the resulting entanglements of polymer chains in the chemistry-affected regime contribute to the dependence of ζ on η in the capillary regime.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reactive Spreading Dynamics of Molten Polymer Liquids

Zhang

Guo

et al. 2023

Macromolecules

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“…The wetting is recorded by the camera arranged from the side view. The final contact angle and the speed of the wetting are the main parameters that are used for the next step evaluation of the wetting coefficient and the spreading rate (Kozlova et al , 2010; Laing et al , 2021).…”

Section: Introductionmentioning

confidence: 99%

Real-time contact angle’s measurement of molten solder balls in laboratory conditions

Dzivy

Pietriková²

2022

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Purpose The purpose of this paper is to show a possibility to measure a change of a contact angle during the melting in real-time and to reveal significant factors of a wettability. Influence of the flux with combination of plasma on copper surface was investigated in experiment as well. Design/methodology/approach Laboratory equipment consists of heating and optical part that was developed and tested for real-time contact angle’s measurements. Solder balls based on Sn96.5/Ag3/Cu0.5 and Sn63Pb37 spread out on a copper substrate during a melting process. The wettability of pure copper surface was compared with copper surface treated with flux or combination plasma–flux. The contact angle and spreading rate of a melted solder balls observed by the charged-coupled device camera were analyzed in real-time and measured using the JavaScript. Findings Laboratory equipment allows for analysis of contact angle and spreading rate in real-time during the melting process. The contact angle decreases more noticeable after applying the plasma-flux treatment in contrast to no flux or flux treatment only. Using the plasma treatment before application of the flux improves the wettability and the effectivity of the flux activity on the copper surface during the melting process. Originality/value The interpretation of the results of such a comprehensive measurement leads to a better understanding of the mutual relation between flux and combination plasma–flux of the wetting during the melting process. The simple, cheap, fast and accurate laboratory equipment, which consists of the heating and the optical part, allows for the wettability evaluation of the melting process in real-time.

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Wetting Effect on Patterned Substrates

Wang

Nestler

2023

Advanced Materials

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A droplet deposited on a solid substrate leads to the wetting phenomenon. A natural observation is the lotus effect, known for its superhydrophobicity. This special feature is engendered by the structured microstructure of the lotus leaf, namely, surface heterogeneity, as explained by the quintessential Cassie-Wenzel theory (CWT). In this work, recent designs of functional substrates are overviewed based on the CWT via manipulating the contact area between the liquid and the solid substrate as well as the intrinsic Young's contact angle. Moreover, the limitation of the CWT is discussed. When the droplet size is comparable to the surface heterogeneity, anisotropic wetting morphology often appears, which is beyond the scope of the Cassie-Wenzel work. In this case, several recent studies addressing the anisotropic wetting effect on chemically and mechanically patterned substrates are elucidated. Surface designs for anisotropic wetting morphologies are summarized with respect to the shape and the arrangement of the surface heterogeneity, the droplet volume, the deposition position of the droplet, as well as the mean curvature of the surface heterogeneity. A thermodynamic interpretation for the wetting effect and the corresponding open questions are presented at the end.

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Reactive wetting of polyethylene on ethylene-propylene-diene terpolymer

Cited by 5 publications

References 28 publications

Reactive Spreading Dynamics of Molten Polymer Liquids

Reactive Spreading Dynamics of Molten Polymer Liquids

Real-time contact angle’s measurement of molten solder balls in laboratory conditions

Wetting Effect on Patterned Substrates

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