Is CTAB a surfactant?
CTAB, [(C16H33)N(CH3)3Br], also known as cetyltrimethylammonium bromide; hexadecyltrimethylammonium bromide; and cetrimonium bromide is a cationic surfactant.
What type of surfactant is CTAB?
Cetrimonium bromide ([(C16H33)N(CH3)3]Br; cetyltrimethylammonium bromide; hexadecyltrimethylammonium bromide; CTAB) is a quaternary ammonium surfactant. It is one of the components of the topical antiseptic cetrimide.
What is CTAB?
“Lungs Clear To Auscultation Bilaterally”, an abbreviation used in medical records for lung examination.
Is CTAB soluble in water?
Solubility : Soluble in water (36.4 g/l at 20° C), methanol (>200 g/l at 20° C), alcohol (Very soluble), acetone (Slightly soluble), and chloroform.
How do you dissolve CTAB in water?
Dissolve 4.1 gram NaCl (Merck, p.a.) in 80 mL distilled water. While stirring, add 10 gram N-cetyl-N,N,N,-trimethyl ammonium bromide (CTAB) (Merck, p.a.). To dissolve heat the solution at 65 °C. Adjust the volume to 100 mL with distilled water.
What does surfactant mean?
surfactant, also called surface-active agent, substance such as a detergent that, when added to a liquid, reduces its surface tension, thereby increasing its spreading and wetting properties.
Is CTAB organic?
Cetyltrimethylammonium bromide is the organic bromide salt that is the bromide salt of cetyltrimethylammonium; one of the components of the topical antiseptic cetrimide. It has a role as a surfactant and a detergent. It is a quaternary ammonium salt and an organic bromide salt.
Is CTAB anionic or cationic?
cationic detergent
A cationic detergent, cetyltrimethylammonium bromide (CTAB), selectively dissociates the intermediate filament of the fibroblast.
How do you make a CTAB solution?
CTAB/NaCl solution. Dissolve 4.1 gram NaCl (Merck, p.a.) in 80 mL distilled water. While stirring, add 10 gram N-cetyl-N,N,N,-trimethyl ammonium bromide (CTAB) (Merck, p.a.). To dissolve heat the solution at 65 °C.
How do you dilute a CTAB?
There is the preparation of CTAB solution. 121.1 g Tris Dissolve in about 700 ml of H2O. Bring pH down to 8.0 by adding concentrated HCl (you’ll need about 50 ml). Bring total volume to 1 L with ddH2O.
How do you dissolve CTAB powder?
CTAB is Hexadecyltrimethylammonium bromide. Dissolve it before adding NaCl, with stirring and a little warmth, if necessary. When the NaCl is dissolved, lots of tiny bubbles come out of solution; they rise to the surface very slowly, simulating undissolved material.
What is CTAB and how does it work?
The positive charge of the CTAB molecule allows it to denature these molecules that would interfere with this isolation. CTAB has been shown to have potential use as an apoptosis -promoting anticancer agent for head and neck cancer (HNC). In vitro, CTAB interacted additively with γ radiation and cisplatin, two standard HNC therapeutic agents.
Is CTAB toxic to humans?
Toxicity tests showed CTAB remaining toxic with concentrations as low as 10 μM. The human cells show CTAB being nontoxic at concentrations less than 1 μM. Without the use of CTAB in this synthesis, the gold nanorods are not stable; they break into nanoparticles or undergo aggregation.
Can CTAB control the size and shape of nanoparticles?
Control of nanoparticle size and shape is important in order to tune its properties. CTAB has been a widely used reagent to both impart stability to these nanoparticles as well as control their morphologies. CTAB may play a role in controlling nanoparticle size and shape by selectively or more strongly binding to various emerging crystal facets .
How does CTAB form micelles at 303 K?
As with most surfactants, CTAB forms micelles in aqueous solutions. At 303 K (30 °C) it forms micelles with aggregation number 75-120 (depending on method of determination; average ~95) and degree of ionization, α = 0. 2–0. 1 (fractional charge; from low to high concentration).