Antifouling Properties of Fluoropolymer Brushes toward Organic Polymers: The Influence of Composition, Thickness, Brush Architecture, and Annealing

Wang, Zhaoyi; Zuilhof, Han

doi:10.1021/acs.langmuir.6b00695

Cited by 34 publications

(27 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…67 Fouling is generally defined as the deposition or accumulation of unwanted materials on a solid surface, causing severe damage of equipment, 68 and is particularly relevant for reduced flow, such as in orifices in next-generation Si-based printer heads and SiN-based microsieves (typically pore size: 400–4000 nm). Both monolayers 51 and polymer brushes 69 have been used to minimize such organic polymer fouling, but all previously made coatings took many hours and (for the brushes) multistep surface-bound conversions. Therefore, the antifouling properties of the prepared monolayers were studied toward a selection of commonly used polymers with similar molecular weight ( M n ∼ 5000 g/mol), namely poly(ethylene glycol) (PEG), poly(acrylic acid) (PAA), poly(vinyl acetate) (PVA), polystyrene (PS), poly(2-vinylpyridine) (P2VP) and poly( N -isopropylacrylamide (PNIPAM).…”

Section: Resultsmentioning

confidence: 99%

Rapid Surface Functionalization of Hydrogen-Terminated Silicon by Alkyl Silanols

Escorihuela

Zuilhof

2017

J. Am. Chem. Soc.

Self Cite

View full text Add to dashboard Cite

Surface functionalization of inorganic semiconductor substrates, particularly silicon, has focused attention toward many technologically important applications, involving photovoltaic energy, biosensing and catalysis. For such modification processes, oxide-free (H-terminated) silicon surfaces are highly required, and different chemical approaches have been described in the past decades. However, their reactivity is often poor, requiring long reaction times (2–18 h) or the use of UV light (10–30 min). Here, we report a simple and rapid surface functionalization for H-terminated Si(111) surfaces using alkyl silanols. This catalyst-free surface reaction is fast (15 min at room temperature) and can be accelerated with UV light irradiation, reducing the reaction time to 1–2 min. This grafting procedure leads to densely packed organic monolayers that are hydrolytically stable (even up to 30 days at pH 3 or 11) and can display excellent antifouling behavior against a range of organic polymers.

show abstract

Section: Resultsmentioning

confidence: 99%

Rapid Surface Functionalization of Hydrogen-Terminated Silicon by Alkyl Silanols

Escorihuela

Zuilhof

2017

J. Am. Chem. Soc.

Self Cite

View full text Add to dashboard Cite

show abstract

“…With addition of a little amount of fluorinated diblock copolymer, hydrophobic properties of the coatings could also be increased through further thermal treatment, which was assumed to be attributed to the orientation of the fluoro-containing ligands and the transition of surface morphology [31]. Moreover, annealing could improve the antifouling properties of the coatings prepared from fluoropolymer brushes and even yield better long-term antifouling behavior under harsh environments [32]. However, it should be pointed out that, in most cases, the reregulation of surface composition (enrichment of fluorine element) and evolution of surface morphology (regular micro-/nano-structure) occurs simultaneously during the thermal treatment process.…”

Section: Sustainability Of the Surface Hydrophobicity Of The Hybrid Fmentioning

confidence: 99%

Preparation of UV-Curable Low Surface Energy Polyurethane Acrylate/Fluorinated Siloxane Resin Hybrid Coating with Enhanced Surface and Abrasion Resistance Properties

et al. 2020

View full text Add to dashboard Cite

Low surface energy coatings have gained considerable attention due to their superior surface hydrophobic properties. However, their abrasion resistance and sustainability of surface hydrophobicity are still not very satisfactory and need to be improved. In this work, a series of utraviolet (UV)-curable fluorosiloxane copolymers were synthesized and used as reactive additives to prepare polyurethane acrylate coatings with low surface energy. The effect of the addition of the fluorinated graft copolymers on the mechanical durability and surface hydrophobicity of the UV-cured hybrid films during the friction-annealing treatment cycles was investigated. The results show that introducing fluorosiloxane additives can greatly enhance surface hydrophobicity of the hybrid film. With addition of 2 wt.% fluorosiloxane copolymers, the water contact angle (WCA) value of the hybrid film was almost tripled compared to that of the pristine PU film, increasing from 58 • to 144 • . The hybrid film also showed enhanced abrasion resistance and could withstand up to about 60 times of friction under a pressure of 20 kPa. The microstructure formed in the annealed film was found to contribute much to achieve better surface hydrophobicity. The polyurethane acrylate/fluorinated siloxane resin hybrid film prepared in this study exhibits excellent potential for applications in the low surface energy field.Especially, some pioneering studies demonstrated that the robust and self-healing ability of the fluorinated materials contribute significantly to the performance of superhydrophobic coatings. For example, Lin et al. [15] prepared superhydrophobic fabrics under 12 KPa and 28,000 cycles of abrasion with wool felt by using a fluoroalkyl silane and crosslinked polydimethylsiloxane (PDMS). Their results showed that the water contact angle of the fabrics remained above 150 • , indicating that the superhydrophobic surface character was retained. They also utilized fluorinated-decyl polyhedral oligomeric silsesquioxane (FD-POSS) and hydrolyzed fluorinated alkyl silane (FAS) to prepare superhydrophobic fabrics, which still exhibited superhydrophobic surface even under ten plasma-and-heat cycles [16]. Zhang et al. [17] combined thiol-ene fluorinated siloxane (T-FAS) and hydrophobic fumed silica nanoparticles to prepare superhydrophobic coatings that could withstand approximately 100 abrasion cycles at 45 KPa [18]. It should be noted that, in these examples, the materials were surface-modified materials rather than pure fluoropolymers.Incorporation of fluorinated groups into acrylate copolymers could bring several desirable properties to the polyacrylate coatings. Depending on their chain length, the contribution of the introduced fluoroalkyl-containing moieties to the material surface properties can be tailored. If the molecular chain of the moieties are too short, they may be buried within the polymer matrix, thus mitigating their contribution [19]. In this aspect, Koji Honda et al. [9] studied the effects of side chain length on the molecular ag...

show abstract

“…This chemistry endow fluorinated polymers with extraordinary thermal and chemical stabilities rendering them attractive for many applications. [22][23][24][25][26][27][28] Specially, due to the bioinertness, low surface energy as well as their low solubility in water, which promotes self-aggregation, fluoropolymers are widely used in several biological and medical materials 29,30 such as drug and gene delivery, [31][32][33] dental implants, 34 anti-fouling coatings, 35,36 blood substitutes 37 and contact lenses 38 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis, aqueous solution behavior and self-assembly of a dual pH/thermo-responsive fluorinated diblock terpolymer

2021

View full text Add to dashboard Cite

show abstract

Antifouling Properties of Fluoropolymer Brushes toward Organic Polymers: The Influence of Composition, Thickness, Brush Architecture, and Annealing

Cited by 34 publications

References 45 publications

Rapid Surface Functionalization of Hydrogen-Terminated Silicon by Alkyl Silanols

Rapid Surface Functionalization of Hydrogen-Terminated Silicon by Alkyl Silanols

Preparation of UV-Curable Low Surface Energy Polyurethane Acrylate/Fluorinated Siloxane Resin Hybrid Coating with Enhanced Surface and Abrasion Resistance Properties

Synthesis, aqueous solution behavior and self-assembly of a dual pH/thermo-responsive fluorinated diblock terpolymer

Contact Info

Product

Resources

About