Can there be formation of four phases in phase behavior test of mixed surfactants ?

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Can increases in salinity increases the solubility of surfactant in water ?

Solubility of surfactant in water is known to decrease with increase in the salt concentration in water. However, if increase in salt concentration has lead to increase in the solubility of a...

02 March 2019 1,531 3 View

What can be the possible reasons for increase in CMC value with increase in carbon chain length of surfactants ?

Generally for surfactants with same hydrophilic head group and varying carbon chain length, the CMC is less for surfactant with larger carbon chain length. What can be the possible reason(s) for...

10 November 2017 4,558 6 View

What are the possible reasons for increase or decrease in IFT reduction by surfactant due to presence of salt and variation in concentration of salt?

Salt is known to enhance the IFT reduction property of surfactants, however for some cases IFT increases in presence of salt. What are the possible reasons for this binary nature of salt in IFT...

01 February 2017 6,698 2 View

Why is N-hydroxymethyl acrylamide monomer soluble in water but its polymer is not soluble in water?

Monomer of N-hydroxymethyl acrylamide is soluble in water but its polymer is not soluble in water. Similar property is observed for N-hydroxyethyl acrylamide.

07 August 2016 6,338 4 View

What should be the amount of surfactant required for emulsion polymerization ?

How much surfactant should be used for emulsion polymerization? Should it be more than CMC of surfactant? Or does its concentration depends upon amount of hydrophobic monomer?

06 July 2016 1,344 4 View

Can non-soluble initiators can be used during polymerization process ?

In case of solution polymerization technique, is it necessary for the initiator to be soluble in solvent, such as AIBN in ethanol, or can non-soluble initiators can be used, such as AIBN in water ?

05 June 2016 1,154 5 View

Binary Logistic Generalized Linear Mixed model in SPSS. Is it doable?

I want to analyses the proportion of swimming sperm of three species of fish in two salinities. To analyse the proportion of swimming sperm in a Generalized Linear Model, I would use a Binary...

03 March 2021 2,297 3 View

What analysis to choose with a large neste dataset and clearly skewed or kurtotic distributions?

Hello! I have a dataset of n=3000 nested within 8 countries with approximately 200 or 400 responses in each country. I originally planned to perform multilevel modelling with 4 dependent variables...

02 March 2021 6,865 1 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View

Does any one can help me choose a reasonable basis set for intermediate metal ions interactions with guanine (i.e Fe2+, Mn2+, Cu2+ and exc.)?

Hello every body Does any one has any idea to help me choose a reasonable basis set for intermediate metal ions (i.e Fe2+, Mn2+, Cu2+ and exc.) interactions with guanine or other DNA organic...

01 March 2021 6,187 2 View

What could be some reasons why unstimulated monocytes are getting activated?

Im doing PBMC isolation -> CD14+ enrichment using magnetic beads -> stimulation setup. My negative control is just cells in cRPMI but they seem to get activated over and over again.

28 February 2021 7,883 3 View

Why does intensity drops as concentration increases?

Is there any reason for decrease in fluorescence emission intensity of HSA,BSA when increase the concentration ?

28 February 2021 3,653 4 View

POlymer+DMSO solution and moisture??

What could be the reason of moisture at the sides of Vial when I am preparing my polmyer+DMSO solution for membrane fabrication? What etiquettes I am possibly missing here?

28 February 2021 6,516 5 View

How the wettability of rock sample can be changed by ageing in pure hydrocarbon oils only?

I want to do wettability analysis of hydrocarbon oil (octane)/rock/surfactant solution system. but to do the analysis first I have to make rock surface oil-wet. Since hydrocarbon oil does not have...

27 February 2021 5,383 3 View

Should we reduce the standard unit of length to 0.31951540592 meter ?

The reasoning behind this question is to align the ratios of the proton potential in energy per charge to the speed of light in distance per time. As these two dimensions appear to be related,...

27 February 2021 947 7 View