Hydrophobic surfaces

In this paper, a thin stearic acid (SA) film was deposited onto the polyurethane (PU) coatings with different concentrations of stearic acid in the ethanol (1 wt.%, 2 wt.% and 3 wt.%) by centrifuged technique. Fourier transform infrared spectra (FTIR) and water contact angle (WCA) method were performed to characterize and evaluate the hydrophobic layer formed on the surface of the samples.

9p dianmotminh02 03-05-2024 3 2   Download

Ebook "Protein-Protein interactions (Topics in Medicinal chemistry, Volume 8)" surveys the field of inhibitors of the MDM2/p53 interaction, which essentially began with the high-profile disclosure of Nutlins, and quickly and steadily grew through programs at a number of pharmaceutical companies. The MDM2/p53 interaction constitutes a paradigm example of a relatively large, hydrophobic interaction surface for which lead compounds can easily be found.

276p coduathanh1122 27-03-2024 5 1   Download

Ebook "Silicone surface science (Advances in Silicon science, Volume 4)" offers a survey of the major topics concerning the properties and behavior of silicone surfaces. It covers all main aspects of the subject, including: polydimethylsiloxane, spread monolayers, self-assembled monolayers, hydrophobicity and super-hydrophobicity, coupling agents, surfactants, fluorosilicones, surface treatments and surface analysis.

399p coduathanh1122 27-03-2024 3 1   Download

Ebook "Surface and interfacial forces – From fundamentals to applications (Progress in colloid and polymer science)" are representative of the richness of research topics in colloid and polymer science. They cover a broad eld including the application of scanning probe techniques to colloid and interface science, surface induced ordering, novel developments in amphiphilic systems as well as the synthesis and applications of nano-colloids.

166p manmanthanhla0201 27-02-2024 2 1   Download

Ebook "Adhesive interactions of mussel foot proteins" presents recent progress in understanding the basic surface and intermolecular interactions employed by mussels to achieve strong and durable wet adhesion. The surface forces apparatus (SFA) and various other techniques were applied to measure the interactions between mussel foot protein-3 fast (Mfp-3 fast) and the model substrate, mica, as well as the interactions between various mussel adhesive proteins.

79p nhanphanguyet 28-01-2024 5 2   Download

In ebook "Atmospheric and aerosol chemistry" Atmospheric aerosol particles serve an important role in establishing the climate and in the hydrological cycle as nuclei in the formation of cloud droplets. The relationship between an aerosol particle’s chemical composition and its ability to serve as a cloud condensation nucleus (CCN) is complex. Organic material, a ubiquitous component of tropospheric aerosols, is typically more hydrophobic and less hygroscopic, and therefore less CCN active, than inorganic salts.

267p nhanphanguyet 28-01-2024 4 2   Download

Ebook "Liquid separations with membranes: An introduction to barrier interference (Second edition)" presents a self-consistent approach to separations of liquids with membranes, contrasting equilibrium separations with the rate-controlling effects of barrier interference on mass transfer. Unlike equilibrium separations, which depend on the thermodynamic condition of the fluid mixtures alone, barrier separations additionally are subject to specific interactions of the mixture components with the barrier.

138p lamquandat 28-12-2023 17 2   Download

In tissue engineering, coating biomaterial’s surface with extracellular matrix (ECM) proteins can promote many biological activities, including cellular responses, wound healing, and rejection reduction. Several interactions occur upon binding proteins onto the surfaces, leading to changes in the protein structural conformation, directly affecting the cell-host interactions. Therefore, this study investigates the impacts of surfaces’ wettability on protein conformation.

10p vimulcahy 18-09-2023 6 3   Download

Inducing roughness to achieve superhydrophobic surfaces through nanoparticlesʹ inclusion is a wellknown concept; however, the consistency and secondary pollutants are challenges to be addressed.

16p viberbers 09-08-2023 5 3   Download

Cellulose (SC) isolated from sesame seed (SS) was surface modified with the introduction of an ester functional group via a simple reaction to produce the modified product (SA). SS, SC and SA were characterized using Fourier transform infrared (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TG), particle size distribution (PSD), zeta potential and scanning electron microscopy (SEM).

7p viberbers 09-08-2023 4 3   Download

Differential scanning calorimetry was established for in-situ measurement ofthe transition temperatures of antibodies when adsorbed on hydrophobic interaction chromatography media. This method is also suitable for non-transparent media, which is an advantage over spectroscopic methods that cannot be used in many cases due to large background signals.

7p viginny 23-12-2022 5 3   Download

Deploying two salts in hydrophobic interaction chromatography can significantly increase dynamic binding capacities. Nevertheless, the mechanistic understanding of this phenomenon is lacking. Here, we investigate whether surface tension or ionic strength govern dynamic binding capacities of the chromatographic resin Toyopearl Butyl-650 M in dual salt systems.

12p viginny 23-12-2022 6 3   Download

Size exclusion chromatography has become an essential tool for the protein therapeutics industry. Conceptually, it is a simple form of chromatography that is driven by entropy and sieving effects. An ideal size exclusion column would exhibit no adsorptive interactions between its internal surfaces and the solutes being analysed, but that is not easily achieved.

10p vironald 15-12-2022 8 3   Download

Biological superhydrophobic surfaces are relatively common in nature. Inspired by the superhydrophobic feature, plentiful materials with hydrophobic surfaces have been fabricated for various purposes such as anticorrosion, anti-icing, self-cleaning, friction reduction, and oil-water separation.

8p vimclaren 12-10-2022 7 2   Download

This study presents a cheap and facile method to fabricate the functional surface on Tole substrate for water repellent and dust removal application. Bare Tole substrate was initially ground using sandpaper to generate the microscale structures and followed by the wet etching method using an acid solution to create the hierarchical structure.

5p vibentley 08-09-2022 18 3   Download

The aim of this work was to strengthen the evidence of using micro diatom frustule as a promising candidate for drug loading materials for both hydrophobic and hydrophilic drug models. The morphological, surface elemental composition of diatomite powder, a raw source of micro diatom frustules and purified diatomite to collect micro diatom frustule were investigated.

6p paddington36 04-01-2022 15 1   Download

The V32C bacteriocin derivative which exhibited the strongest bioactivity enhancement was found to exhibit a reduction of the molecular surface hydrophobicity and isoelectric point. These changes may have contributed in the enhancement of its bioactivity. The identification of these critical mutations is highly valuable as basis for future studies on the rational design of bioengineered bacteriocins with enhanced bioactivity.

7p mudbound 10-12-2021 6 1   Download

The objective of this study was to investigate the beneficial, virulence, and antibiotic resistance-related genes in 10 well-characterized bacteriocinogenic LAB strains. The autoaggregation, co-aggregation, cell surface hydrophobicity, and bile salt tolerance were also evaluated to examine their potential as bacteriocinogenic probiotics and/or starter culture. Results showed that all tested strains showed abilities for auto-aggregation at 4oC and 37oC, co-aggregation with S. aureus JCM8704, S. typhimurium BIOTECH1826, and E. coli DH5α, and significant cell-surface hydrophobicity.

10p mudbound 10-12-2021 11 1   Download

A superhydrophobic high-density polyethylene (HDPE)/organoclay composite material with a water-static contact angle of ∼162◦ and low hysteresis (7◦) was prepared by a simple solution-intercalation technique. This onestep method consists of the insertion of organoclay, produced through cation exchange with cetyltrimethylammonium bromide (CTAB), in the polymer matrix at 120◦C in xylene. In this process, evaporation of the solvent and organoclay amount are key factors for the achievement of superhydrophobicity.

9p tudichquannguyet 29-11-2021 9 1   Download

Wool has disulphide bonds containing-hydrophobic external keratin layers, which act as a barrier for the modification through coating with hydrophilic materials. For that reason, in this work, to ensure a dense and homogenous conductive polymer coating onto the wool, the fabrics were subjected to the reduction process in the aqueous alkaline medium containing agents that can attack these disulphide bonds. Then, one of the polyaniline derivatives, poly(mtoluidine) (PMT), was coated onto wool by in situ polymerization of m-toluidine sulphate using ammonium persulfate (APS) as an oxidant.

16p tudichquannguyet 29-11-2021 9 1   Download