Novel organic–inorganic hybrid polymer based on fluorinated polyhedral oligomeric silsesquioxanes for stable superamphiphobic fabrics and aluminum corrosion protection

Li, Wanli; Liu, Hongzhi

doi:10.1016/j.mtchem.2023.101390

Cited by 5 publications

(3 citation statements)

References 61 publications

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“…Fluorocarbon surfactants are special surfactants in which the introduced fluorine atom partially or completely replaces the hydrogen in the hydrophobic chain of the hydrocarbon surfactant to form a hydrophobic portion consisting of a fluoroalkyl or alkenyl group [3]. Unlike traditional hydrocarbon surfactants, fluorocarbon surfactants are widely used in firefighting [4], oil extraction [5,6], and electronics [7,8], and for manufacturing paper [9] and coatings [10,11], due to their excellent physicochemical properties, including high surface activity, thermal and chemical stability, and water and oil repellency [12,13].…”

Section: Introductionmentioning

confidence: 99%

Surface Activity, Wetting, and Aggregation of a Perfluoropolyether Quaternary Ammonium Salt Surfactant with a Hydroxyethyl Group

Dou,

Liu,

Wang

et al. 2023

Molecules

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This paper reports the synthesis of a novel quaternary surfactant containing a hydroxyethyl group (PFPE-C) and the surface properties of its aqueous solution (investigated by comparisons with two structurally similar chemicals, dodecyl-(2-hydroxyethyl)-dimethylammonium chloride (DHDAC) and PFPE-A). The minimum surface tension (γCMC) and critical micelle concentration (CMC) of the PFPE-C aqueous solution were 17.35 mN/m and 0.024 mmol/L, respectively. This study confirms that surfactants containing hydroxyethyl groups efficiently reduce the surface tension of aqueous solutions, and fluorocarbon surfactants exhibit better surface activity than ordinary hydrocarbon surfactants with similar structures. The micellization, aggregation, air-water interfacial adsorption, and wettability of PFPE-C aqueous solutions have been systematically investigated. Highly concentrated PFPE-C aqueous solutions exhibit good wettability on PTFE and paraffin films. Moreover, the aggregates of PFPE-C in the aqueous solution were clearly seen as vesicles on Cryo-TEM micrographs. Primary biodegradation results indicate that 19% of PFPC-C can be degraded within one week.

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Section: Introductionmentioning

confidence: 99%

Surface Activity, Wetting, and Aggregation of a Perfluoropolyether Quaternary Ammonium Salt Surfactant with a Hydroxyethyl Group

Dou,

Liu,

Wang

et al. 2023

Molecules

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“…[56] In this work, the compound used, FD-POSS, is soluble in fluorinated solvents. [55] FD-POSS has been used in prior works as a component in coating formulations on solids, [57,58] meshes, [59,60] and fabrics [61][62][63][64][65] alike. Also, other studies have used harmful solvents, like Asahiklin AK-225, [53,66,67] which have been banned commercially.…”

Section: Introductionmentioning

confidence: 99%

Sprayable Superoleophobic Coatings for Pumpless Handling of Low‐Surface‐Tension Liquids

Moitra,

Megaridis

2024

Adv Materials Inter

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Limited attention has been paid to repellency and wettability‐confined transport of low‐surface‐tension liquids, such as oils, alcohols, and hydrocarbons. This is because repellency becomes very difficult for fluids with surface tension below 30 mN m−1. This situation is encountered in many engineering applications using organic liquids and thus, oleophobic surfaces are of high technological importance. In this work, a nanocomposite coating comprising of fluorinated silica micro‐ and nanoparticles (filler), a copolymer (binder), and traces of fluorinated polyhedral oligomeric silsesquioxane (additive, lowest surface‐energy crystalline material reported to date) is spray‐deposited on a surface pretextured by laser etching, a technique that requires no lithographic processing. The approach results in surfaces that can repel liquid hydrocarbons with surface tension as low as 21.14 mN m−1 and also hinder the spreading of heptane (19.74 mN m−1) at room temperature. The repellency of several organic liquids with surface tensions in the range of 19.7 – 27 mN m−1 is experimentally investigated and compared with water (baseline case). To study the effect of fluid properties, comparisons are performed between the distances traveled and the velocities of microliter droplets transported pumplessly on wedge‐shaped wettability‐patterned tracks that confine the liquids by the superoleophobic background surrounding the wettable tracks.

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“…A developed porous material, based on polyhedral oligomeric silsesquioxanes (POSS), demonstrates variable properties and a highly symmetrical three-dimensional structure with specified nanometer-sized dimensions. − Its potential lies in the combination of versatile and flexible organic shells surrounding a rigid silica core. It is a promising candidate for synthesizing hybrid nanocomposites that exhibit properties midway between organics and ceramics, − The increasing demand for POSS in scientific research and industry is attributed to their customizable physical and chemical properties. − Another crucial aspect of functionalized silsesquioxanes is their physicochemical properties arising from their hybrid (organic–inorganic) nature. − The Si–O–Si framework, corresponding to silica with a well-defined structure, could serve as an intriguing material for modifying polymers and acting as fillers (nanofillers). − The precise control of molecule sizes and the variation in functional groups within the POSS core allow for their accurate deposition and embedding in a polymer matrix. − This, in turn, results in the creation of composite materials with unique characteristics. These organic–inorganic hybrid materials showcase a diverse range of fascinating physicochemical properties, including alterations in solubility, enhanced dielectric characteristics, improved resistance to oxidation and fire, elevated decomposition and glass transition temperatures, reduced heat transfer rates, and an impact on the hardness of the resulting materials. − …”

Section: Introductionmentioning

confidence: 99%

Hybrid Porous Polymers Combination of Octavinylsilsesquioxane/Pyrene with Benzothiadiazole Units for Robust Energy Storage and Efficient Photocatalytic Hydrogen Production from Water

Mohamed,

Hammad Elsayed,

Hassan

et al. 2024

ACS Appl. Polym. Mater.

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We investigated the performance that is improved in various applications through molecular structural alterations. Specifically, we emphasized the importance of controlling the branching densities of organic moieties as a useful tactic for varying the surface area and porosity of hybrid porous organic/inorganic polymers (HPPs), which include octavinylsilsesquioxane (OVS) units. This study shows that adjusting the branching densities could greatly enhance energy storage and hydrogen production. The two-branched chemical structure (4,7-dibromo-2,1,3-benzothiadiazole, BT-Br 2 ) and the four-branched organic compound (1,1,2,2-tetrakis(4-bromophenyl)ethylene, TPE-Br 4 ) are individually reacted with OVS and 1,3,6,8-tetrabromopyrene (Py-Br 4 ) twice to prepare the HPPs. These materials with high or low crosslinking density, as well as small and large surface areas, are synthesized by this dual reaction, which also produces HPPs with different cross-linking densities. Based on Brunauer−Emmett− Teller calculations, the OVS-Py-BT HPP has more than 4.5 times larger surface area than the OVS-Py-TPE HPP material. Remarkably, OVS-Py-BT HPP exhibited exceptional results for supercapacitor applications, with specific capacitance values of 248 and 54 F/g for OVS-Py-BT and OVS-Py-TPE HPPs, respectively, as determined by galvanostatic charge−discharge. OVS-Py-BT HPP significantly outperformed OVS-Py-TPE HPP in photocatalytic hydrogen evolution. This is evident from their respective hydrogen evolution rates: 1348 μmol g −1 h −1 for OVS-Py-BT HPP and a much lower 11.3 μmol g −1 h −1 for OVS-Py-TPE HPP.

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Novel organic–inorganic hybrid polymer based on fluorinated polyhedral oligomeric silsesquioxanes for stable superamphiphobic fabrics and aluminum corrosion protection

Cited by 5 publications

References 61 publications

Surface Activity, Wetting, and Aggregation of a Perfluoropolyether Quaternary Ammonium Salt Surfactant with a Hydroxyethyl Group

Surface Activity, Wetting, and Aggregation of a Perfluoropolyether Quaternary Ammonium Salt Surfactant with a Hydroxyethyl Group

Sprayable Superoleophobic Coatings for Pumpless Handling of Low‐Surface‐Tension Liquids

Hybrid Porous Polymers Combination of Octavinylsilsesquioxane/Pyrene with Benzothiadiazole Units for Robust Energy Storage and Efficient Photocatalytic Hydrogen Production from Water

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