Surface thiolation of silicon for antifouling application

Zhang, Xiaoning; Gao, Pei; Hollimon, Valerie; Brodus, DaShan; Johnson, Arion; Hu, Hongmei

doi:10.1186/s13065-018-0385-6

Cited by 9 publications

(8 citation statements)

References 19 publications

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“…The formation of deposits and polymer fouling is a known challenge in many industrial applications, such as membrane and filtration technologies, [ 4,5 ] bio‐fouling in the context of silicon and silicon‐based materials, [ 6 ] and food engineering/protein fouling. [ 7–9 ] The formation of polymeric deposits seems to take place especially at the liquid/metal oxide interface, where the preferable tendency of PVP to form complexes with proton donors could be of importance.…”

Section: Introductionmentioning

confidence: 99%

Thin Organic‐Inorganic Anti‐Fouling Hybrid‐Films for Microreactor Components

Neßlinger

Welzel

Rieker

et al. 2022

Macro Reaction Engineering

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Deposit formation and fouling in reactors for polymer production and processing especially in microreactors is a well-known phenomenon. Despite the flow and pressure loss optimized static mixers, fouling occurs on the surfaces of the mixer elements. To improve the performance of such parts even further, stainless steel substrates are coated with ultra-thin films which have low surface energy, good adhesion, and high durability. Perfluorinated organosilane (FOTS) films deposited via chemical vapor deposition (CVD) are compared with FOTS containing zirconium oxide sol-gel films regarding the prevention of deposit formation and fouling during polymerization processes in microreactors. Both film structures led to anti-adhesive properties of microreactor component surfaces during aqueous poly(vinylpyrrolidone) (PVP) synthesis. To determine the morphology and surface chemistry of the coatings, different characterization methods such as X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR) spectroscopy as well as microscopic methods such as field-emission scanning electron microscopy (FE-SEM) and atomic force microscopy (AFM) are applied. The surface free energy and wetting properties are analyzed by means of contact angle measurements. The application of thin film-coated mixing elements in a microreactor demonstrates a significant lowering in pressure increase caused by a reduced deposit formation.

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Section: Introductionmentioning

confidence: 99%

Thin Organic‐Inorganic Anti‐Fouling Hybrid‐Films for Microreactor Components

Neßlinger

Welzel

Rieker

et al. 2022

Macro Reaction Engineering

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show abstract

“…[ 82,83 ] This factor is exacerbated by temperature and humidity conditions at the skin‐material interface which may be ideal for the proliferation of bacteria and fungi. [ 84 ]…”

Section: Biomimicry Through Synthetic Polymersmentioning

confidence: 99%

Past, Present, and Future of Soft‐Tissue Prosthetics: Advanced Polymers and Advanced Manufacturing

et al. 2020

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past 30 years, [12,13] it is only the last decade that has seen its rapid development as part of the fourth industrial revolution. [14] This change in practice is evidenced by the significant fraction of recent literature describing advances in 3D printed prostheses, including technological advances [4,15-18] and clinical reports. [19,20] Further innovations involving collaborations between clinicians, academics, and industry, promise even greater capabilities. The future will see 3D printers that can mix materials as desired during fabrication [21] and those that can 3D print organic semiconductors and piezoelectric polymers for sensing and bionics [22-24] (Figure 1). This report is focused on polymers for soft tissue, external, personalized, prosthetics with clinical applications for the ear, [25] nose, [26] eye, [27] face, [28] breast, [29] and hand. [30] The characteristics of both traditional and 3D printable polymeric materials, as well as current advanced manufacturing technologies and those in development, are also reviewed. The earliest evidence of prosthetics dates back to ≈2300 BC, where Egyptian mummies have been discovered with eye, nose, and genital reconstructions fashioned from plaster packed with mud, sand, linen, butter, or soda (Figure 1). [31] Wood, cloth, natural waxes, resins, and metals were later used as the material of choice for rudimentary prostheses. [32] Prostheses remained relatively unchanged for thousands of years until the 16th century, where prosthetic noses and eyes were made from parchment, wax, wood, hard rubber, gold, silver, and copper. [33] Metals continued as a fundamental material throughout the 19th century, largely due to their ability to be shaped and molded as needed. [34,35] One of the first polymers to be used in prosthetics, poly(methyl methacrylate) (PMMA), was developed in response to the glass shortages in the World Wars of the 20th Century. [36] This polymer went on to become the most common prosthetic material of the time, and still finds use today in artificial eyes [33] and prosthetic substructures. [37] Further innovations in the 20th century produced many new polymers, such as vinyls, copolymers, plastisols, and one of the most significant materials in prosthetics, silicone. [38] Discovered in the early 1900s by Fredrick Kipping, silicone was first used in prosthetics by George W Barnhart in 1960. [39] This versatile polymer remains a primary prosthetic material today due to its soft tissue-like properties, ease of manipulation, chemical inertness, durability, and excellent biocompatibility. [40,41] The search for alternative materials Millions of people worldwide experience disfigurement due to cancers, congenital defects, or trauma, leading to significant psychological, social, and economic disadvantage. Prosthetics aim to reduce their suffering by restoring aesthetics and function using synthetic materials that mimic the characteristics of native tissue. In the 1900s, natural materials used for thousands of years in prosthetics were replaced by syntheti...

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“…Thiol–ene click chemistry is a green and efficient molecular structure design reaction, commonly used in the molecular chain functionalization modification of polymers. , In the functionalization modification of silicone elastomers, this reaction is commonly used to enhance the polarity by grafting polar groups such as carboxyl, hydroxyl, and epoxy groups onto the side chain of the siloxane. PFDT, a sulfhydryl reagent containing a large number of F elements and has an excellent reactivity, can be grafted onto the surface of MVQ as a reaction substrate, which thereby endowed it with certain antifouling and self-repairing ability. − …”

Section: Introductionmentioning

confidence: 99%

Fluorination Modification of Methyl Vinyl Silicone Rubber and Its Compatibilization Effect on Fluorine/Silicone Rubber Composites

Xing,

Yu,

Ding

et al. 2024

ACS Omega

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Among numerous rubbers, high-performance rubber composites can be obtained by mixing fluororubber (FKM) with excellent oil resistance and silicone rubber (SiR) with excellent low-temperature resistance. While the difference in polarity between these two kinds of rubbers leads to a reduction in the properties of the composites. To solve the compatibility problem between the two-phase interfaces in FKM/SiR composites, in this research, fluorinated silicone rubbers (MVQg-PFDT) of methyl vinyl silicone rubber (MVQ) grafted with 1H,1H,2H,2H-perfluorodecanethiol (PFDT) were prepared via a facile and efficient thiol−ene click reaction, which was then added into FKM/SiR composites. The results showed that the fluorinecontaining side chains could effectively inhibit the low-temperature crystallization phenomenon of silicone rubber and further broaden its application ranges in low-temperature environments. The properties of FKM/SiR composites with the addition of MVQg-PFDT were significantly improved, with the highest tensile strength of 14.1 MPa and the lowest mass change rate of 6.71% after 48h immersion at 200 °C in IRM903 oil. Additionally, the hydroxyl groups between the fluorine-containing side chains of MVQ-g-PFDT and the surface of silica facilitate the enhancement of the uniform dispersion of fillers. Atomic force microscopy (AFM) characterization results showed a distinct enhancement of the compatibility between the two phases of FKM and SiR. This work would provide further insight into efforts to improve compatibility between rubbers with widely different polarities.

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Surface thiolation of silicon for antifouling application

Cited by 9 publications

References 19 publications

Thin Organic‐Inorganic Anti‐Fouling Hybrid‐Films for Microreactor Components

Thin Organic‐Inorganic Anti‐Fouling Hybrid‐Films for Microreactor Components

Past, Present, and Future of Soft‐Tissue Prosthetics: Advanced Polymers and Advanced Manufacturing

Fluorination Modification of Methyl Vinyl Silicone Rubber and Its Compatibilization Effect on Fluorine/Silicone Rubber Composites

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