All-dry synthesis of poly(2-ethylhexyl acrylate) nanocoatings using initiated chemical vapor deposition method

Şakalak, Hüseyin; Karaman, Mustafa

doi:10.1016/j.porgcoat.2019.03.044

Cited by 9 publications

(8 citation statements)

References 21 publications

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“…Figure 3 shows the FTIR spectra of as‐deposited homo and copolymer thin films in the wavenumber range between 3500 and 1500 cm −1 . The strong CO stretching peak was observed in the homopolymer and copolymers in 1731 and 1739 cm −1 , respectively 39,40 . The fingerprint peak of unsaturated CC bond around 1631 cm −1 is absent in all spectra, which implies that polymerization proceeded through unsaturated CC double bond without any entrained monomer in the as‐deposited film 41 .…”

Section: Resultsmentioning

confidence: 87%

“…The strong C O stretching peak was observed in the homopolymer and copolymers in 1731 and 1739 cm −1 , respectively. 39,40 The fingerprint peak of unsaturated C C bond around 1631 cm −1 is absent in all spectra, which implies that polymerization proceeded through unsaturated C C double bond without any entrained monomer in the as-deposited film. 41 Symmetric and asymmetric stretching C H vibration peaks belonging CH 2 moiety were observed between 2859 and 2961 cm −1 for both homo and copolymers.…”

Section: Resultsmentioning

confidence: 96%

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Vapor deposition of stable copolymer thin films in a batchiCVDreactor

Yılmaz

Şakalak

Gürsoy

et al. 2020

J of Applied Polymer Sci

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This study demonstrates the deposition of poly(ethylhexyl acrylate-co-ethylene glycol dimethacrylate) (P(EHA-co-EGDMA)) copolymer thin films in a batch type initiated chemical vapor deposition (iCVD) reactor. Crosslinked copolymers are desired for many applications because of their high stable properties. iCVD polymers derived by monomers bearing only one vinyl bond are usually linearly structured polymers and hence they are not durable, which is unfavorable for many real-world applications. Robust crosslinked iCVD films can be produced with the help of crosslinkers. In a typical iCVD process, copolymer thin film is produced by constantly feeding monomer vapor and crosslinker into the reactor. The monomer/crosslinker ratio should be precisely controlled for fabrication of reproducible thin films. In order to eliminate problems caused by adjusting the flowrates of precursors, a closed-batch type iCVD reactor was used for the first time in this study to produce copolymer thin films. The variation of precursors' partial pressures allowed control over the copolymer thin film structures. As compared with homopolymer, copolymers showed the better chemical and thermal stable properties. Almost 40% of the copolymer thin film remained on the substrate surface at an annealing temperature of 300 C, whereas the homopolymer film was completely removed at an annealing temperature of 280 C.

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Section: Resultsmentioning

confidence: 87%

Section: Resultsmentioning

confidence: 96%

Vapor deposition of stable copolymer thin films in a batchiCVDreactor

Yılmaz

Şakalak

Gürsoy

et al. 2020

J of Applied Polymer Sci

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“…Among the flexible functional polymers that can physically adhere strongly to the surface without altering the morphological properties of the surface in thin-film coating applications, there are remarkable advantages in terms of both functional chemical diversity and applicability to different substrates. , Thanks to its low glass-transition temperature and its ability to form homogeneous films, poly(2-ethylhexyl acrylate) (PEHA) is one of the functional polymers that stand out among self-adhesive polymers. − Therefore, such polymers have applications in various fields, such as the adhesive industry, medical applications, biomaterials, and sensor applications . In this study, it was employed in the Schottky structure as an interface.…”

Section: Introductionmentioning

confidence: 99%

Electrical and Photodetector Characteristics of Schottky Structures Interlaid with P(EHA) and P(EHA-co-AA) Functional Polymers by the iCVD Method

Demirezen,

Ulusoy,

Durmuş

et al. 2023

ACS Omega

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In this study, poly(2-ethylhexyl acrylate) (PEHA) homopolymer and its copolymer combined with acrylic acid P(EHA- co -AA) were employed as interfaces in two separate Schottky structures. First, both interfaces were grown by initiated chemical vapor deposition (iCVD), which provides much better deposition control and homogeneous coating compared to solution-phase methods. In addition to this advantageous method, the effects of two different polymers, one of which is better able to adhere to the crystal surface on which it is formed than the other, on the optoelectronic properties have been studied. Then, their current–voltage ( I – V ) and capacitance/conductance–voltage ( C /( G /ω)– V ) characteristics were investigated both in the dark and under illumination. The basic electrical parameters and the illumination-induced profile of the surface state ( N ss ) were probed by I – V and C – V measurements for two samples. A decrease in the barrier height (BH) and, consequently, a significant increase in the photocurrent were observed under illumination. Striking changes in series resistance ( R s ) values are also highlighted. The photocapacitance and conductance characteristics indicated that the structures could be considered not only as photodiodes but also as photocapacitors. Moreover, the voltage-dependent changes of some photodetector parameters, such as responsivity ( R ), sensitivity ( S ), and specific detectivity ( D *), along with the transient photocurrent characteristics, are discussed for both structures. Therefore, we can say that the strong changes in these parameters, which figure the merit of photodiode and photodetector applications, depending on the voltage and under illumination, prove that it is a study carried out in accordance with the purpose and so they can be used in electronic and optoelectronic applications.

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“…Sakalak 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. 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.…”

Section: Introductionmentioning

confidence: 99%

“…Among the different types of vapor deposition technologies, initiated chemical vapor deposition (iCVD) emerged as an efficient way of depositing functional polymers, considering the high deposition rates, conformality, large-area uniformity, and high functional group retention, which are all the desired parameters for an industrially applicable coating process. − In recent literature, there are examples of acrylic PSAs or PSA-related films deposited through iCVD. 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 .…”

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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All-dry synthesis of poly(2-ethylhexyl acrylate) nanocoatings using initiated chemical vapor deposition method

Cited by 9 publications

References 21 publications

Vapor deposition of stable copolymer thin films in a batchiCVDreactor

Vapor deposition of stable copolymer thin films in a batchiCVDreactor

Electrical and Photodetector Characteristics of Schottky Structures Interlaid with P(EHA) and P(EHA-co-AA) Functional Polymers by the iCVD Method

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

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