Sodium deoxycholate as a versatile dispersing and coating-forming agent: A new facet of electrophoretic deposition technology

Zhao, Qinfu; Liu, X.; Veldhuis, S.; Zhitomirsky, Igor

doi:10.1016/j.colsurfa.2019.124382

Cited by 12 publications

(9 citation statements)

References 62 publications

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“…Coating adhesion was tested according to ASTM D3359-17 for comparison with adhesion of other polymer coatings [ 42 , 43 , 44 ]. The experimental details and equipment for corrosion testing in 3% NaCl solutions were described in [ 45 , 46 ].…”

Section: Methodsmentioning

confidence: 99%

Poly(Methyl Methacrylate) Coatings Containing Flame Retardant Additives from Suspensions in Water-2-Propanol

Wang

Sakib

et al. 2021

Molecules

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A dip-coating technique is designed for deposition of poly(methyl methacrylate) (PMMA) from water/2-propanol mixture, avoiding the use of traditional toxic solvents. Solutions of PMMA macromolecules with high molecular weight (MW) are obtained for a water/2-propanol ratio of 0.15–0.33 and the solubilization mechanism is discussed. The ability to use concentrated PMMA solutions and high MW of the polymer are the key factors for the successful dip coating deposition. The coating mass for 10 g L−1 polymer solutions shows a maximum at a water/2-propanol ratio of 0.25. The deposition yield increases with the polymer concentration increase and with an increasing number of the deposited layers. PMMA deposits protect stainless steel from aqueous corrosion. The coating technique allows for the fabrication of composite coatings, containing flame-retardant materials (FRMs), such as commercial halloysite, huntite, hydrotalcite, and synthesized Al(OH)3, in the PMMA matrix. The FRM content in the coatings is modified by variation of the FRM content in colloidal suspensions. A fundamentally new method is developed, which is based on the salting out aided dispersive extraction of Al(OH)3 from the aqueous synthesis medium to 2-propanol. It is based on the use of hexadecylphosphonic acid molecules as extractors. The method offers advantages of reduced agglomeration.

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Section: Methodsmentioning

confidence: 99%

Poly(Methyl Methacrylate) Coatings Containing Flame Retardant Additives from Suspensions in Water-2-Propanol

Wang

Sakib

et al. 2021

Molecules

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“…BAS can also disperse carbon quantum dots (CQDs), as demonstrated by Zhao et al in 2020 [49]. SDC was used to functionalise CQDs via hydrophobic interactions.…”

Section: Bile Acid Saltsmentioning

confidence: 99%

“…However, as protons are generated at the anode, they combine with the deoxycholate moiety to form an insoluble protonated adduct. As BAS act as dual dispersants and EPD agents, they are ideal for producing CNM-containing films [49] (Table 3 (2)).…”

Section: Bile Acid Saltsmentioning

confidence: 99%

Biocompatible Dispersants for Carbon Nanomaterials

2021

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Carbon nanomaterials (CNMs) are a fascinating class of materials that have gained considerable interest in recent years. Their favourable biocompatibility, combined with unique chemical and mechanical properties, has attracted scientists from various disciplines. A significant hurdle in their deployment in biomedical applications is their hydrophobicity in their pristine form. This review surveys and discusses existing non-covalent methods of functionalising CNMs with biocompatible dispersants to facilitate their incorporation into aqueous solutions. Different types of dispersants will be examined and compared as well as the factors affecting their efficiency. This work seeks to provide a compilation of the various methods employed in producing biocompatible CNM dispersions.

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“…Cholic acid and deoxycholic acid were used (Liu, Zhao, Veldhuis, & Zhitomirsky, 2020; Zhao, Liu, Veldhuis, & Zhitomirsky, 2020) for electrophoretic deposition of electrically neutral polytetrafluoroethylene, which is a promising material for various medical applications (Cassady, Hidzir, & Grondahl, 2014). The deposition approach was based on pH‐dependent charge and gel‐forming properties as well as binding and film‐forming properties of the bile acids.…”

Section: Functionalization Of Implant Materials Using Bile Saltsmentioning

confidence: 99%

“…Electrophoretic deposition mechanism involves electrophoresis of charged molecules or particles towards the electrode surface, where their accumulation, coagulation and charge neutralization results in film formation (Boccaccini, Keim, Ma, Li, & Zhitomirsky, 2010). The coatings showed good corrosion protection of stainless steel (Liu et al, 2020; Zhao et al, 2020). It was suggested that such coatings can be used for corrosion protection of biomedical implants and biomedical devices.…”

Section: Functionalization Of Implant Materials Using Bile Saltsmentioning

confidence: 99%

Application of bile acids for biomedical devices and sensors

2020

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Bile acids (BAs) are physiologically important biosurfactants (Singh, Metrani, Shivanagoudra, Jayaprakasha, & Patil, 2019), which solubilize cholesterol, lipids, proteins, fatty acids, monoglycerides and vitamins in a human body. The strong solubilization power of BAs is related to their amphiphilic chemical structure, which is fundamentally different from the structures of other surfactants. As a general feature, natural BAs molecules have a steroid nucleus with concave hydrophilic and convex hydrophobic sides, containing OH and methyl groups, respectively (Figure 1a and Table 1). The chemical structures of BAs contain a short hydrocarbon chain with COOH or SO 3 H end groups. As a result, dissociated BAs molecules exhibit anionic properties in solutions. Properties of BAs are influenced by the number of OH groups bonded to a steroid core and nature of anionic groups. Modifying the hydroxyl or carboxyl groups of BAs creates a diverse set of BA-based compounds, maintaining some original properties and introducing novel properties as well. The unique distribution of hydrophilic and hydrophobic domains allows these molecules to self-organize into supramolecular assemblies in water. BAs salts form mixed micelles (Figure 1b) with various water-insoluble molecules and facilitate their dissolution. Moreover, BAs allow dispersion of hydrophobic materials, such as carbon nanotubes (Ata, Poon, Syed, Milne, & Zhitomirsky, 2018). The bifacial amphipathic BAs molecules act as compatibilizing agents between the water-insoluble

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Sodium deoxycholate as a versatile dispersing and coating-forming agent: A new facet of electrophoretic deposition technology

Cited by 12 publications

References 62 publications

Poly(Methyl Methacrylate) Coatings Containing Flame Retardant Additives from Suspensions in Water-2-Propanol

Poly(Methyl Methacrylate) Coatings Containing Flame Retardant Additives from Suspensions in Water-2-Propanol

Biocompatible Dispersants for Carbon Nanomaterials

Application of bile acids for biomedical devices and sensors

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