Effect of wettability and surface roughness on the adhesion properties of collagen on PDMS films treated by capacitively coupled oxygen plasma

Juárez‐Moreno, Juan Antonio; Ávila‐Ortega, Alejandro; Oliva, A.I.; Avilés, F.; Cauich-Rodríguez, J.V.

doi:10.1016/j.apsusc.2015.05.063

Cited by 101 publications

(65 citation statements)

References 41 publications

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“…So far, many surface treatment methods have been proposed to modify and increase the hydrophilicity of PDMS, including UV reactions, UV/ozone reactions, UV grafting, laser/plasma etching, chemical surface treatments, surface casting, and corona discharges, just to mention a few. However, these reported procedures have various disadvantages which include safety problems, complex processes, time consumption as well as requiring well‐trained technicians to perform them.…”

Section: Introductionmentioning

confidence: 99%

Hydrophilic surface modification of polydimetylsiloxane‐co‐2‐hydroxyethylmethacrylate (PDMS‐HEMA) by Silwet L‐77 (heptamethyltrisiloxane) surface treatment

Kalulu

Zhang

Xia

et al. 2018

Polymers for Advanced Techs

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Biomaterials and their host organism's quintessential place of interaction are the surfaces of materials, as transportation of liquids within microchannels requires hydrophilic surfaces. Modifying the hydrophobic surface of polydimethylsiloxane (PDMS) into a hydrophilic one which can be used in biomaterials remains a big challenge. Herein, PDMS-hydroxyethylmethacrylate (HEMA) films were prepared by the condensation of PDMS using isophorone diisocyanate as a cross-linker, followed by the incorporation of HEMA via radical copolymerization. The asprepared PDMS-HEMA films were thereafter hydrophilized via physical treatment with heptamethyltrisiloxane. The surface properties of the obtained PDMS-HEMA films were characterized in wettability, morphology, topography, swelling, mechanical properties, and protein adsorption. Compared to pristine PDMS-HEMA as control, the surface wettability, roughness, and protein adsorption of the hydrophilized PDMS-HEMA films were significantly improved while the films also exhibited excellent optical properties. However, the improvement of the swelling properties remains insignificant, indicating that the interior morphology was still based on the hydrophobic siloxane PDMS. The long-term hydrophilicity was considered good as no significant hydrophobic recovery was noticeable in a period of 5 months after treatment.

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Section: Introductionmentioning

confidence: 99%

Hydrophilic surface modification of polydimetylsiloxane‐co‐2‐hydroxyethylmethacrylate (PDMS‐HEMA) by Silwet L‐77 (heptamethyltrisiloxane) surface treatment

Kalulu

Zhang

Xia

et al. 2018

Polymers for Advanced Techs

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show abstract

“…They showed that on wrinkled PDMS films, the liquid droplet exhibited anisotropic wetting; this resulted in a higher contact angle in the direction perpendicular to the wrinkle axis. The influence of the wettability and surface roughness of the PDMS films treated by coupled oxygen plasma was studied by Juarez‐Moreno et al . Their findings revealed that enhancements in the adhesion strength were attributed to the increased mechanical interlocking driven by increased roughness and the formation of hydrophilic functional groups.…”

Section: Introductionmentioning

confidence: 99%

Solvent‐induced crystallization of a polycarbonate surface and texture copying by polydimethylsiloxane for improved surface hydrophobicity

Yilbaş

Ali

Al-Aqeeli

et al. 2016

J of Applied Polymer Sci

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The influence of the immersion period on the crystallization of polycarbonate (PC) was investigated, and the resulting texture configurations of the crystal structures were reconstructed with polydimethylsiloxane (PDMS). Analytical tools, including optical microscopy, scanning electron microscopy, atomic force microscopy, X-ray diffraction, the sessile drop technique, Fourier transform infrared spectroscopy, microtribometry, and ultraviolet-visible spectrophotometry, were used to characterize crystallized PC and PDMS surfaces. We found that the crystallized PC surface possessed microsize/nanosize spherulites, voids, and fibrils, and the increasing immersion period increased the texture height and spherulite concentration at the surface. The residual stress in the crystallized PC wafer was compressive, and it was on the order of 230 MPa. The friction coefficient of the crystallized PC surface remained lower than that of the as-received PC wafer, and the increase in the immersion period lowered the friction coefficient. The crystallized PC surface demonstrated superhydrophobic characteristics, and the maximum contact angle occurred with 6 min of immersion. The PDMS exactly reconstructed the texture of the crystallized PC surface, except those of the nanofibrils and subnanofibrils. The droplet contact angle attained a higher values for the PDMS replicated surfaces than for those corresponding to the crystallized PC wafer.

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“…c, the modification effect becomes more significant under a lower discharge pressure. This is because the gas could not be completely ionized under a high discharge pressure, consequently reducing the treatment's effect …”

Section: Resultsmentioning

confidence: 99%

Effect of cold atmospheric plasma treatment on hydrophilic properties of fluorosilicone rubber

Meng

Wang

Yun-ping³

et al. 2016

Surf. Interface Anal.

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Vulcanized fluorosilicone rubber for aviation was treated by argon and oxygen cold atmospheric plasma (CAP) in order to modify its hydrophilic properties. The sample's chemical composition was analyzed by X-ray photoelectron spectroscopy (XPS). The static contact angle, surface free energy, and adhesion strength were used to indicate the hydrophilic properties. Additionally, the surface morphologies of the specimens were observed by scanning electron microscopy (SEM) and atomic force microscopy (AFM). The results showed that the contact angle declined from 101.5°to 22°, and the surface energy rose from 21.3 to 71.2 mJ/m 2 after they were treated by argon plasma. Alternatively, the water contact angle decreased to 25.5°, and the surface energy increased to 70.6 mJ/m 2 after they were treated by oxygen plasma. In addition, the SEM and AFM images of the samples illustrate that the treated surface of fluorosilicone rubber becomes rougher than the non-treated surface. The concentrations of carbon (C) and fluorine (F) elements of the material' surface decreased and the contents of O element greatly enriched after plasma treatment. Additionally, chemical group C-O and C-OH appeared after the treatment. However, the hydrophilic effect of the plasma treatment is aged after the specimens were stored for 8-12 h.

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Effect of wettability and surface roughness on the adhesion properties of collagen on PDMS films treated by capacitively coupled oxygen plasma

Cited by 101 publications

References 41 publications

Hydrophilic surface modification of polydimetylsiloxane‐co‐2‐hydroxyethylmethacrylate (PDMS‐HEMA) by Silwet L‐77 (heptamethyltrisiloxane) surface treatment

Hydrophilic surface modification of polydimetylsiloxane‐co‐2‐hydroxyethylmethacrylate (PDMS‐HEMA) by Silwet L‐77 (heptamethyltrisiloxane) surface treatment

Solvent‐induced crystallization of a polycarbonate surface and texture copying by polydimethylsiloxane for improved surface hydrophobicity

Effect of cold atmospheric plasma treatment on hydrophilic properties of fluorosilicone rubber

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