Wettability and surface microstructure of polyamide 6 coated with SiOXCYHZ films

Vendemiatti, Caíque; Hosokawa, Ricardo Shindi; Rangel, Rita C.C.; Bortoleto, J. R. R.; Cruz, Nilson Cristino da; Rangel, Elidiane Cipriano

doi:10.1016/j.surfcoat.2015.03.051

Cited by 19 publications

(25 citation statements)

References 33 publications

(39 reference statements)

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“…The system used for the treatments is basically composed by a cylindrical glass chamber (5L) containing two circular parallel plate electrodes, described in detail in previous work 32 . The upper electrode consists of a metallic grid, through which the gas flows into the reactor while the lower electrode acts as a sample holder.…”

Section: Methodsmentioning

confidence: 99%

Morphological and Chemical Effects of Plasma Treatment with Oxygen (O2) and Sulfur Hexafluoride (SF6) on Cellulose Surface

et al. 2018

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Cellulose is a polymer widely available in nature, however its applications may be restrict due to its hydrophilic character. The creation of hierarchical structures on the surface is one of the required factors to obtain the hydrophobicity of this material. In order to compare the morphological and chemical effects caused by the action of different gases in the creation of nanostructures on the cellulose surface, samples were exposed to oxygen (O 2 ) and sulfur hexafluoride (SF 6 ) plasma treatments. The changes in morphology after treatment prove that both the gases were able to create similar nanostructures in the material. The analysis of elemental composition and identification of functional groups on the sample surface showed that chemical modifications occurred differently for each treatment. Contact angle measurements revealed that samples treated by O 2 plasma remained hydrophilic, whereas low receptivity to polar (θ > 120º) and non-polar (θ > 100º) liquids was observed for samples exposed to SF 6 plasma.

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Section: Methodsmentioning

confidence: 99%

Morphological and Chemical Effects of Plasma Treatment with Oxygen (O2) and Sulfur Hexafluoride (SF6) on Cellulose Surface

et al. 2018

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“…The presence of PAr thin film could have decreased the porcelain's Ra due to the filling of the pores and irregularities of the as-received substrate surface by the coating [20]. For EN-PII, the association of ion bombardment to the deposition process possibly caused an augmentation of defects present on the surface of the specimens due to the higher energy provided to the growing surface by ion bombardment.…”

Section: Discussionmentioning

confidence: 99%

“…For the PII group, a post-deposition treatment was performed, without exposing samples to air, in pure argon atmosphere (10 min), in order to change the structure of the polymer thin film and improve adhesive properties. All parameters were established based on previous studies [20,30] and after pilot tests. The specimens were divided in four experimental groups for each material, three plasma groups as described previously, and a group with no treatment (CTL), totaling 12 groups.…”

Section: Plasma Treatmentsmentioning

confidence: 99%

“…Plasma-deposited thin films are used to produce coatings on different substrates, that can function as a barrier and protect substrates, such as polyamide [20], metals [21] and ceramics [22], from degradation or corrosion, by two well-known techniques plasma-enhanced chemical vapor deposition [20,23,24] and Plasma Immersion Ion Implantation and Deposition [25]. In dentistry, studies showed the use of plasma techniques to immobilize bioactive molecules on the surfaces of bioinert materials [26], for enhancing adhesive qualities in autopolymerized acrylic resin and lithium disilicate ceramic [27,28] and to modify surfaces like titanium and increase protein-adsorption [26], along with others.…”

Section: Introductionmentioning

confidence: 99%

“…Within several possible monomers that can be used as a precursor for plasma techniques and the development of thin films, hexamethyldisiloxane (HMDSO), a organosilicon monomer, shows unique potential for this application [29]. This monomer presents high deposition rates, the flexibility to control the resulting coating structure and properties, by varying the deposition conditions, has a reasonably low cost, produces transparent films in visible spectrum and is relatively nontoxic [20,26,29]. The use of plasma-deposited thin films with HMDSO is a focus of continuous research, yet there is none that has been published in order to create a protective barrier on ceramics and resin composites against the many deleterious effects of the oral environment.…”

Section: Introductionmentioning

confidence: 99%

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Surface characteristics and optical properties of plasma deposited films on indirect aesthetic restorative dental materials

Reis

Silva

Sgura

et al. 2018

Surface and Coatings Technology

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The aim of this study was to develop and characterize wettability, morphology, chemical composition and color of plasma-deposited thin films on the surface of dental materials. A porcelain (VM9, VITA (PC)) and two indirect composite discs (Enamic, VITA (EN) and Lava Ultimate, 3M ESPE (LU)) were used. Different methodologies of film deposition were established: plasma-enhanced chemical vapor deposition (PECVD) with HMDSO/Ar (PAr); PECVD with HMDSO/O 2 (PO 2 ); plasma immersion ion implantation and deposition using HMDSO/Ar (PII). Surface roughness and film thickness were determined by profilometry. Contact angles were measured with a goniometer. Morphological analysis was evaluated using SEM and chemical composition was investigated by FTIR and XPS. Color differences (ΔE) were verified by a spectrophotometer. The films' thicknesses were 620 nm (PAr), 540 nm (PO 2 ) and 70 nm (PII). Surface roughness was not changed for most of the groups. An increase in contact angles for all film groups was detected, except for LU-PII group. In PO 2 films, granular structures covered the entire surface and their presence decreased in PAr and PII. Color differences maintained below 3.0. PO 2 showed a silica-like and PII silicon oxycarbide-like structure and PAr presented an organic behavior. Plasmadeposited thin films were developed and altered surface characteristics of restorative materials, maintaining the materials color and adequate surface roughness potentially working as a protective barrier.

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Effect of different treatments and SiO₂/PVDF coatings on morphology and wettability of electrospun polyamide 6 membranes

Feng

Sun

Liu

et al. 2019

J of Applied Polymer Sci

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The electrospun polyamide 6 (PA6) membranes are treated with different methods. The rough surfaces with different protuberances size and the fiber diameter are prepared by wet, dry heat, wet heat, and ethanol treatments under relaxation, and the formation mechanisms are analyzed. A relative stable structure of PA6 membrane is also prepared by ethanol treatment under tension, and its structure is as same as the untreated membrane. The dynamic water contact angles (WCAs) of the treated membranes are measured. The starting WCA of the membrane with wet heat treatment under relaxation is 90.95°, which is larger than those of wet, dry heat, and ethanol treatments under relaxation. The effects of surface morphologies with different treatments on wettability are analyzed. For obtaining hydrophobicity, the membrane with wet heat treatment under relaxation was coated by polyvinylidene fluoride (PVDF). The WCA of the membrane increases to 127.1° after coating. From another point of view, the WCA of the PVDF/treated PA6 membrane is much larger than that of the pure casting PVDF membrane, which means the rough surface of the treated PA6 membrane can improve the hydrophobicity of the PVDF membrane. Furthermore, the membrane is endowed with superhydrophobicity (WCA of 153.5°) after being coated by SiO2/PVDF due to the multilevel structured surface roughness. It is a relative low cost and convenient operation method to prepare the superhydrophobic material. The results provide a novel preparation method of the superhydrophobic material and a treatment method of the electrospun PA6 membrane to obtain a stable structure. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48804.

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Wettability and surface microstructure of polyamide 6 coated with SiOXCYHZ films

Cited by 19 publications

References 33 publications

Morphological and Chemical Effects of Plasma Treatment with Oxygen (O2) and Sulfur Hexafluoride (SF6) on Cellulose Surface

Morphological and Chemical Effects of Plasma Treatment with Oxygen (O2) and Sulfur Hexafluoride (SF6) on Cellulose Surface

Surface characteristics and optical properties of plasma deposited films on indirect aesthetic restorative dental materials

Effect of different treatments and SiO₂/PVDF coatings on morphology and wettability of electrospun polyamide 6 membranes

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Wettability and surface microstructure of polyamide 6 coated with SiOXCYHZ films

Cited by 19 publications

References 33 publications

Morphological and Chemical Effects of Plasma Treatment with Oxygen (O2) and Sulfur Hexafluoride (SF6) on Cellulose Surface

Morphological and Chemical Effects of Plasma Treatment with Oxygen (O2) and Sulfur Hexafluoride (SF6) on Cellulose Surface

Surface characteristics and optical properties of plasma deposited films on indirect aesthetic restorative dental materials

Effect of different treatments and SiO2/PVDF coatings on morphology and wettability of electrospun polyamide 6 membranes

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Product

Resources

About

Effect of different treatments and SiO₂/PVDF coatings on morphology and wettability of electrospun polyamide 6 membranes