Vapor deposition of stable copolymer thin films in a batch<scp>iCVD</scp>reactor

Yılmaz, Kurtuluş; Şakalak, Hüseyin; Gürsoy, Mehmet; Karaman, Mustafa

doi:10.1002/app.50119

Cited by 5 publications

(5 citation statements)

References 44 publications

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“…PSA 1 and PSA 2 were synthesized with EHA/AA ratios of 1/1.5 and 1/2, respectively. The PSA thin film production is operated under closed-batch conditions . For each deposition cycle, the reactor was fed with precursors until the final pressure reached 600 mTorr.…”

Section: Methodsmentioning

confidence: 99%

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Transfer of CVD-Graphene on Real-World Surfaces in an Eco-Friendly Manner

Yılmaz

Gürsoy

Şakalak

et al. 2023

ACS Appl. Eng. Mater.

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Here we report a one-step and all-dry transfer method for transfer of chemical vapor deposited graphene (CVD-graphene) on different application surfaces using pressure sensitive adhesive (PSA) material as the transfer medium, which is deposited on the application surface by the initiated CVD (iCVD) method in the form of a thin film. The as-deposited PSA film is a copolymer of acrylic acid and ethylhexyl acrylate, in which the relative amount of each component was shown to be a determining factor for the proper adjustment of the adhesive force required for the adhesion-based transfer process. With the help of the thin PSA film on the real-world application surface, graphene transfer was achieved with ease and at high quality by just peeling off the copper substrate, where CVD-graphene was initially deposited. With the all-dry and eco-friendly transfer procedure outlined in this study, it was possible to transfer graphene to a flexible large-area PET substrate (10 cm × 10 cm) on which higher conductivity values were obtained from the I− V experiments as compared with the graphene transferred using the classical wet approach.

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Section: Methodsmentioning

confidence: 99%

“…The PSA thin film production is operated under closed-batch conditions. 31 For each deposition cycle, the reactor was fed with precursors until the final pressure reached 600 mTorr. Both PSA 1 and PSA 2 were synthesized at different numbers of cycles 2 and 4.…”

Section: Psa Thin Film Synthesis By Icvdmentioning

confidence: 99%

Transfer of CVD-Graphene on Real-World Surfaces in an Eco-Friendly Manner

Yılmaz

Gürsoy

Şakalak

et al. 2023

ACS Appl. Eng. Mater.

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“…21 Yilmaz et al studied the copolymerization of EHA with ethylene glycol dimethacrylate in a large-scale iCVD system to improve the durability of the asdeposited coatings. 22 Moon et al deposited an ultrathin copolymer film of poly(2-hydroxyethyl acrylate-co-2-ethylhexyl acrylate) as PSA with tunable viscoelasticity using iCVD. 23 In this paper, it was aimed to deposit thin films containing ethylhexyl acrylate, AA, and perfluorodecyl acrylate on flexible substrates using the iCVD technique.…”

Section: Introductionmentioning

confidence: 99%

“…Şakalak and Karaman studied the effect of various synthesis parameters on the structure, morphology, and the deposition kinetics of poly(2-ethylhexyl acrylate) (PEHA) film, one of the main building blocks of acrylate-based PSAs, deposited by iCVD . Yilmaz et al studied the copolymerization of EHA with ethylene glycol dimethacrylate in a large-scale iCVD system to improve the durability of the as-deposited coatings . Moon et al deposited an ultrathin copolymer film of poly(2-hydroxyethyl acrylate- co -2-ethylhexyl acrylate) as PSA with tunable viscoelasticity using iCVD …”

Section: Introductionmentioning

confidence: 99%

Roll-to-Roll Vapor Deposition of Hydrophobic and Transparent Nano-Adhesive Polymeric Thin Films on Rigid and Flexible Substrates

Şakalak

Yılmaz

Gürsoy

et al. 2022

Ind. Eng. Chem. Res.

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This paper demonstrates the adhesive and hydrophobic modifications of glass, poly(ethylene terephthalate), and bamboo fabric surfaces using the initiated chemical vapor deposition (iCVD) process. iCVD of functional thin films is an all-dry and low-temperature alternative to the conventional wet coating processes. The as-deposited film is a terpolymer in which ethylhexyl acrylate and acrylic acid units comprised the pressuresensitive adhesive (PSA) part, while perfluorodecyl acrylate (PFDA) acted as the hydrophobic part due to its low surface energy fluorinated side groups. The PFDA composition in the iCVD terpolymer can be systematically varied by adjusting the initial gas feed fractions of monomers, as verified from FTIR and XPS analyses. The usage of the initiator tertbutyl peroxide during the depositions resulted in high deposition rates up to 80 nm/min at a filament temperature of 230 °C. The as-deposited films possessed high optical transparency with high shear and peel strength values. Depending on the chemical composition, the peel strength values were up to 0.5 N/25 mm on flexible PET substrates. After the coating, the highly porous bamboo surface not only became sticky due to the existence of the thin PSA layer on top but also the became near-superhydrophobic. The application of iCVD coating parameters to deposit hydrophobic PSA on moving large-area substrates under roll-to-roll deposition mode resulted in highly uniform coatings, which shows the potential of iCVD to be operated in industrial scales to functionalize the industrially important flexible substrates.

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“…However, linearly structured polymers are not suitable for some practical applications. In order to produce nonsoluble and robust polymer thin films, cross-linker monomers are fed simultaneously into the reactor in iCVD process. − In this study, ethylene glycol dimethacrylate (EGDMA) was used as a cross-linker. Both PAA homopolymer and copolymers were produced.…”

Section: Introductionmentioning

confidence: 99%

Vapor Deposition of Transparent Antifogging Polymeric Nanocoatings

2021

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This study demonstrates the coating of a transparent and robust organic thin film having an excellent hydrophilicity-based antifogging property by an initiated chemical vapor deposition (iCVD) method. iCVD was able to synthesize linear and cross-liked poly(acrylic acid) (PAA) from the vapors of acrylic acid (AA) and ethylene glycol dimethacrylate (EGDMA) using tert-butyl peroxide (TBPO) as an initiator. High deposition rates of up to 35 nm/min were observed at low deposition temperatures. It was possible to control the quantity of comonomers in the as-deposited films by adjusting the partial pressure of the EGDMA cross-linking agent. The effect of the EGDMA partial pressure on chemical structure was studied using Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) techniques. FTIR and XPS spectra of the as-deposited films showed the complete retention of the monomer functionality during iCVD. Hydrophilicities and large-area uniformity of the coatings were revealed using water contact angle measurements. The as-deposited PAA film was the most hydrophilic with a water contact angle (WCA) of 7.0°, while cross-linking with EGDMA increased the WCA values by up to 51.7°. Results of various tests, which were based on exposing the coated surfaces to artificial fog and hot water vapor, showed the excellent antifogging property of the coatings. Films were never fogged upon extensive and long-term exposure (2 months) to humid air.

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Vapor deposition of stable copolymer thin films in a batchiCVDreactor

Cited by 5 publications

References 44 publications

Transfer of CVD-Graphene on Real-World Surfaces in an Eco-Friendly Manner

Transfer of CVD-Graphene on Real-World Surfaces in an Eco-Friendly Manner

Roll-to-Roll Vapor Deposition of Hydrophobic and Transparent Nano-Adhesive Polymeric Thin Films on Rigid and Flexible Substrates

Vapor Deposition of Transparent Antifogging Polymeric Nanocoatings

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