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Showing 1 to 18 of 18 for “"cetyltrimethylammonium bromide"”.
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STUDYING THE INTERACTION OF NANO- & MICROPLASTICS WITH ENTEROVIRUS AND THEIR CYTOTOXICITY ON HUMAN LUNG CELL LINE
… viral reduction. PMMA fibres containing 5 mg cetyltrimethylammonium bromide (CTAB) achieved the greatest reduction but retained infectivity, suggesting a possible role as viral vectors. Long-term exposure studies demonstrated rapid nanoplastic internalisation and inheritance across 11 …
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Investigation Of Parameters Enabling Admicellar Reversible Addition-Fragmentation Chain Transfer (Raft) Polymerization
… of styrene on silica particles was studied using cetyltrimethylammonium bromide (CTAB) as the adsorbed surfactant bilayer template, 2,2'-azobisisobutyronitrile (AIBN) as a water-insoluble initiator or 4, 4'-azobis (4-cyanovaleric acid) (V-501) as a water-soluble initiator. We demonstrated that …
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Synthesis and electrical property measurements of individual layered transition metal dichalcogenide nanotubes and nanowires
… were grown with the assistance of the surfactant cetyltrimethylammonium bromide. ReSe2 nanotubes were synthesized by using Se nanotubes as a sacrificial template. The nanotubes and nanowires were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy …
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Surfactant Assisted Electrospray Ionization Time of Flight Mass Spectrometry of Synthetic Polymers
… g/mol were observed by adding a surfactant (cetyltrimethylammonium bromide) and changing critical ESI conditions. Altering these parameters, as well as others, has played an important role of reducing the overall charging that the analyte may gain during the desolvation process.
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Stabilization of transition states of organic reactions by cyclodextrins, micelles, and dendrimers
Micelles of cetyltrimethylammonium bromide (CTAB) catalyze the basic cleavage of p-nitrophenyl alkanoates, whereas micelles of sodium dodecyl sulphate (SDS) inhibit this reaction. The strength of binding of the esters to both CTAB and SDS shows the same linear dependence and sensitivity to the acyl …
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Fabrication of a novel radiopharmaceutical: lutetium-177 loaded MCM-41mesoporous silica
… procedure of [superscript 177]Lu loaded MCM-41, cetyltrimethylammonium bromide was dissolved in a solution of 384 ml of MilliQ water heated at 45[degree sign]C and then 2 M NaOH aqueous solution was added. The mixture was stirred vigorously at 80[degree sign]C for 0.5 h. Then …
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Force and Energy Measurement of Bubble-Particle Detachment
… plate, and detachment force and energy of a cetyltrimethylammonium bromide coated silica sphere from a flat bubble. Octadecyltrichlorosilane was used as a hydrophobic coating in the first two experimental methods. These experiments were recorded with a CCD camera to identify the detachment …
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Spatially resolved measurements of kinematics and flow-induced birefringence in worm-like micellar solutions undergoing high rate deformations
… (CPyCl) with sodium salicylate (NaSal) or cetyltrimethylammonium bromide (CTAB) with NaSal have been characterized across several orders of magnitude of deformation rate (10-2 < i6 < 104 s- 1 ). This range enables us to span both the linear and non-linear regimes of rheological behavior for …
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Molecular diagnostics, genetic diversity and generating infectious clones for cassava brown streak viruses
… reliable detection of both CBSV and CBSUV. The cetyltrimethylammonium bromide (CTAB) method of RNA extraction was optimized for sample preparation from infected cassava plants and compared with the commercial kit RNeasy (Qiagen) for sensitivity and reproducibility. Results showed that both …
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Nuclear magnetic resonance and rheo-NMR investigations of wormlike micelles, rheology modifiers, and ion-conducting polymers
… to study the complex rheological behavior of cetyltrimethylammonium bromide wormlike micelle solutions, which behave as nematic liquid crystals at sufficiently high concentration. Amphiphilic solutions of this type are used in myriad applications, from fracturing fluids in oil fields to …
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Hierarchical Semiconductor, Metal and Hybrid Nanostructures and the Study of their Light-matter Interactions
… a 10-fold enhancement. Using the exchange of cetyltrimethylammonium bromide with α-methoxy-ω mercaptopolyethylene glycol on the surface of gold nanorods as an exemplary system, we showed the feasibility of using HCPCF SERS to monitor the change in surface chemistry of NRs. 4) Facile, …
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Amphiphilic Diblock Copolymers: Study of Interpolyelectrolyte Complexation in Organic Media and Nanoencapsulation of Melatonin
… (2-(methacryloyloxy)ethyl¬dimethyl-ethyl¬ammonium bromide) (PDMAEMAQ) and poly(acrylic acid) (PAA), and amphiphilic diblock copolymers based on polystyrene and the ionizable block poly(acrylic acid) were synthesized via Atom Transfer Radical Polymerization (ATRP). All polymers were characterized …
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AFM surface force measurements between hydrophobized gold surfaces
… force between two mica surfaces hydrophobized in cetyltrimethylammonium bromide (CTAB) solutions. Follow-up experiments conducted by many investigators confirmed their results, while others suggested that the "hydrophobic force" is an artifact due to nanobubbles (or cavitation). Evidences for the …
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Influence of hydrophobically modified polyelectrolytes on nanoparticle synthesis in self-organized systems and in water
… dodecylsulfate (SDS) and the cationic surfactant cetyltrimethylammonium bromide (CTAB) since they can interact with the oppositely charged polyelectrolytes and the microemulsions formed using these surfactants present a large water-in-oil region. Subsequently, the polymer-modified microemulsions …
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Improving the recovery of "difficult to release" periplasmically-expressed products from recombinant E. Coli
… X-100, 0.05% benzalkonium chloride (BAC), 0.1% cetyltrimethylammonium bromide (CTAB), and 2 M urea remarkably changed the secondary structure of beta-lactamase and alpha-amylase. The secondary structure of Fab D1.3 was more vulnerable to the tested chemicals. The biological activity of the …
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Effects of long-chain surfactants, short-chain alcohols and hydrolyzable cations on the Hydrophobic and Hydration Forces
… such as dodeylammonium hydrochloride (DAHCl) and cetyltrimethylammonium bromide (CTAB). Appearance of the strong hydrophobic forces is due to the likelihood that the double-chain cationic surfactant can create a higher hydrocarbon chain packing density than the single-chain cationic surfactants …
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Photothermal properties and applications of gold nanorods
… GNRs bear a bilayer of surfactant molecules cetyltrimethylammonium bromide (CTAB) on the surface and exhibit two SPR peaks ranging from 500 to 900 nm depending on the aspect ratio of the GNRs. The surface of the GNRs can be modified by different ligands or polyelectrolyte layers in the …
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Engineering nanocarbon interfaces for electron transfer
… of anionic sodium dodecyl sulfate and cationic cetyltrimethylammonium bromide, where differences in surfactant charge can significantly affect the ability of the diazonium ion to access the SWCNT surface. For bile salt surfactants, with the exception of sodium cholate, we find that the …