Ultrafast Fabrication of a Robust Superwetting Coating

Liu, Fatang; Du, Hongzhong; Zhao, Xingjian; Wang, Xinran; Wang, Chijia; Liu, Zhanjian; Wang, Huaiyuan

doi:10.1021/acs.iecr.1c02814

Cited by 7 publications

(2 citation statements)

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“…Multilayer polymer films and polymer coatings have become indispensable for the transport and storage of goods in many industries, offering a reliable, sanitary, and inexpensive solution to meet the demands of increasingly complex applications and environments. – These films can have sophisticated structures that take advantage of the properties of individual polymer layers (e.g., puncture resistance, gas permeability, UV protection) to produce multilayer films optimized for specific applications. For example, a food storage film may include a Nylon or ethylene vinyl alcohol (EVOH) barrier layer in addition to a polyolefin layer providing a moisture or oxygen barrier, structural support, and sealability.…”

Section: Introductionmentioning

confidence: 99%

In Situ Observation of Chemical Reactions at Buried Solid/Solid Interfaces in Coextruded Multilayer Polymer Films

Rossi,

Wu,

Paradkar

et al. 2023

Ind. Eng. Chem. Res.

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The characterization of chemical reactions at the buried interface is critical to understand interfacial molecular interactions and improve interfacial properties like adhesion. Interface-sensitive sum frequency generation (SFG) vibrational spectroscopy can probe the buried interface in situ nondestructively. While SFG has been used to study many model polymer interfaces, it has never been applied to study multilayer polymer films produced on commercial coextrusion lines.Here, we apply SFG to elucidate the molecular details of chemical reactions at the buried interface in multilayer cast films consisting of maleic anhydride (MAH)-modified Tie layers promoting the adhesion between polyamide and polyethylene. We demonstrated the utility of SFG to identify the reaction products from the interfacial reaction between MAH and polyamide with varying MAH concentrations and to monitor changes of the interfacial molecular orientation. The developed approach is generally applicable to probe chemical reactions and molecular interactions at buried interfaces in multilayer polymer films.

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Section: Introductionmentioning

confidence: 99%

In Situ Observation of Chemical Reactions at Buried Solid/Solid Interfaces in Coextruded Multilayer Polymer Films

Rossi,

Wu,

Paradkar

et al. 2023

Ind. Eng. Chem. Res.

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“…It is reported that hydrophobic particles added with "glue" are used for spraying to obtain superhydrophobic surfaces with better stability than those directly sprayed onto the particles [22]. Liu et al pressed modified superhydrophobic particles into the substrate "glue" under pressure to enhance the peel resistance of the superhydrophobic coating [23]. Three-dimensional-printed superhydrophobic materials of various shapes also have excellent mechanical stability but are difficult to apply to coatings [24,25].…”

Section: Introductionmentioning

confidence: 99%

Robust Superhydrophobic Coating with Mullite Fiber Framework

Zhong

et al. 2022

Coatings

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Superhydrophobic surfaces have received increasing attention due to their excellent water repellency, but the fragile stability of superhydrophobic coatings has been a huge hindrance to their applications. In this work, we constructed a layer of mullite fibers on the surface of a ceramic substrate using high-temperature molten salt. Then, we obtained a superhydrophobic surface with a contact angle greater than 150° via soaking the sample with an alcoholic sol containing modified particles. On the one hand, this interlaced three-dimensional fiber structure increases the surface area and roughness, providing more locations for attaching superhydrophobic particles, as well as improving the water repellency. On the other hand, this fiber layer has a height difference, which protects the superhydrophobic particles attached at lower positions, and when an external object contacts the surface, it gives priority to the stable mullite fibers, reducing the direct contact between superhydrophobic particles and external objects and improving the stability of the superhydrophobic coating. After abrasion with sandpaper, the sample with the mullite fiber layer showed excellent stability compared to the samples without the fiber layer, indicating the significant protective effect of the fiber layer. This paper provides a potential method to enhance the stability of superhydrophobic ceramic surfaces.

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