Adhesion strength and viscoelastic properties of polydimethylsiloxane (PDMS) based elastomeric nanocomposites with embedded electrospun nanofibers

Deshpande, Tushar D.; Singh, Yogesh; Patil, Sandip; Joshi, Yogesh M.; Sharma, Ashutosh

doi:10.1039/c9sm00533a

Cited by 14 publications

(5 citation statements)

References 46 publications

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“…Interfacial adhesion strength is a vital property for the robustness of the coating. Generally, materials with low surface energy, such as PDMS and fluorine-containing polymer, show poor adhesion strength to the substrate. , In this work, since the chemical compatibility of silica and PDMS is poor, solidification-induced phase separation will occur. In addition, the low-surface-tension characteristic of PDMS is favorable to its surface migration tendency, and the formation of rigid silica from PHPS may also have a “squeezing” effect on the linear PDMS chain .…”

Section: Resultsmentioning

confidence: 99%

Inorganic–Organic Silica/PDMS Nanocomposite Antiadhesive Coating with Ultrahigh Hardness and Thermal Stability

Guo

Liang

et al. 2023

ACS Appl. Mater. Interfaces

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Antiadhesive surfaces have been gaining continuous attention, because of the scientific and industrial significance. Slippery surfaces and antismudge coatings with antiadhesive behavior have been readily designed and prepared. However, improving robustness of the surfaces, especially the simultaneous demonstration of features of high hardness, excellent adhesion to different substrates, and high thermal stability, is constantly challenging. Herein, we present a silica/polydimethylsiloxane (PDMS) nanocomposite coating (SPNC), wherein silica acts as a consecutive phase and nanophased PDMS is covalently embedded. The nanoconfined PDMS phase exhibits enhanced thermal stability and endows SPNC with slippery behavior; meanwhile, enrichment of PDMS on the surface renders a gradient composition of the coating. Accordingly, the inorganic−organic SPNC simultaneously displays a high nanoindentation hardness of 3.07 GPa and a pencil hardness over 9H, outstanding thermal stability of the slippery performance up to 400 °C, and excellent adhesion strength to different substrates. Additionally, SPNC exhibits high optical transparency, flexibility, resistance to bacterial clone, and chemical corrosion. With the scalable fabrication process, it can be envisioned that the antiadhesive coating with unprecedented comprehensive merits in this work has significant potentials for large-area applications, especially under severe service environments.

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Section: Resultsmentioning

confidence: 99%

Inorganic–Organic Silica/PDMS Nanocomposite Antiadhesive Coating with Ultrahigh Hardness and Thermal Stability

Guo

Liang

et al. 2023

ACS Appl. Mater. Interfaces

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“…However, the strategies reported here are much more general and can be applied to different tapes (materials, thicknesses, adhesives, etc. ), metals, elastomers, and nonadhesive substrates, including possible modifications for tuning their properties. , In our preliminary tests, we manually peeled 50 μm PDMS devices from their PMMA carriers without any functional issues. However, clearly, any automatized method for releasing elastomer devices from their carriers with controlled velocities or forces or peeling angles can be applied to double-framed devices, which may be especially useful in case of much more fragile ( e.g ., significantly thinner) devices.…”

Section: Discussionmentioning

confidence: 99%

Double-Framed Thin Elastomer Devices

Criscuolo

Montoya

Presti

et al. 2020

ACS Appl. Mater. Interfaces

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Elastomers and, in particular, polydimethylsiloxane (PDMS) are widely adopted as biocompatible mechanically compliant substrates for soft and flexible micro-nanosystems in medicine, biology, and engineering. However, several applications require such low thicknesses (e.g., <100 μm) that make peeling-off critical because very thin elastomers become delicate and tend to exhibit strong adhesion with carriers. Moreover, microfabrication techniques such as photolithography use solvents which swell PDMS, introducing complexity and possible contamination, thus limiting industrial scalability and preventing many biomedical applications. Here, we combine low-adhesion and rectangular carrier substrates, adhesive Kapton frames, micromilling-defined shadow masks, and adhesive-neutralizing paper frames for enabling fast, easy, green, contaminant-free, and scalable manufacturing of thin elastomer devices, with both simplified peeling and handling. The accurate alignment between the frame and shadow masks can be further facilitated by micromilled marking lines on the back side of the low-adhesion carrier. As a proof of concept, we show epidermal sensors on a 50 μm-thick PDMS substrate for measuring strain, the skin bioimpedance and the heart rate. The proposed approach paves the way to a straightforward, green, and scalable fabrication of contaminant-free thin devices on elastomers for a wide variety of applications. KEYWORDS: double-framed thin elastomer devices, contaminant-free epidermal devices, thin PDMS devices, epidermal electronics, peel-off, Kapton-paper frame

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“…Considering application circumstances, besides heat dissipation, adhesion is an important property as well. Polydimethylsiloxane (PDMS) as one of the most developed siloxane polymers is optimal for cooling coatings because of the excellent waterproof properties, adhesive properties, nontoxicity, and easy modeling capacity. − The composites of PDMS, graphene, and h -BN are believed to be ideal for high thermal radiation and thermal conductivity coating systems.…”

Section: Introductionmentioning

confidence: 99%

In Situ Combustion Synthesis of Gr/h-BN Composites and Its Passive Heat Dissipation Application

et al. 2022

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To enhance the infrared radiation efficiency and the heat transfer performance simultaneously, graphene (Gr) was synthesized in situ on hexagonal boron nitride (h-BN) to prepare Gr/h-BN composites by a scalable combustion synthesis in CO 2 atmosphere using Mg as sacrificial solder. The synthesized Gr/h-BN composites were added in polydimethylsiloxane polymer to prepare composite coatings, which show an infrared emissivity greater than 0.95 and a through-plane thermal conductivity up to 2.584 W•m −1 •K −1 . When functioning on an Al heatsink, such a composite coating can reduce the temperature by as much as 21.7 °C. Meanwhile, the composite coating exhibits superior adhesion on the Al substrate. Therefore, Gr/h-BN composite coatings with noteworthy infrared radiation and thermal conductivity are expected to be a promising candidate for heat dissipation applications.

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Adhesion strength and viscoelastic properties of polydimethylsiloxane (PDMS) based elastomeric nanocomposites with embedded electrospun nanofibers

Abstract: In the present study, the adhesive and viscoelastic properties of polydimethylsiloxane (PDMS) based nanocomposite pressure sensitive adhesives (PSAs) with embedded electrospun polyacrylonitrile (PAN) and polyvinyl alcohol (PVA) nanofibers as fillers were investigated.

Cited by 14 publications

References 46 publications

Inorganic–Organic Silica/PDMS Nanocomposite Antiadhesive Coating with Ultrahigh Hardness and Thermal Stability

Inorganic–Organic Silica/PDMS Nanocomposite Antiadhesive Coating with Ultrahigh Hardness and Thermal Stability

Double-Framed Thin Elastomer Devices

In Situ Combustion Synthesis of Gr/h-BN Composites and Its Passive Heat Dissipation Application

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