How to normalize the FT-IR spectra of the same thin film polymer membranes to increase the intensity of the small peaks????

How to normalize the FT-IR spectra of the same thin film polymer membranes to increase the intensity of the small peaks????

06 July 2016 389 2 View

Can you give me an explanation, if a crosslinking happened or not?

I'm preparing polyflourinated polyether-polyphenylene block copolymer using Ulmann Reaction (Ni(cod)2). and I prepared it many times befor and it was Ok. but this time New peaks appeared in 19FNMR...

01 February 2015 5,435 8 View

Does anyone have an idea about the best method to prepare Vilsmeier salts of ureas?

I tried different methods but either low yield or no product obtaied?

31 December 2014 5,775 4 View

What is the stability of benzyl azide as a side chain in sulfonated polyether sulfones under Nucleophilic polymerization conditions?

I want to prepare sulfonated poly ether sulfone from (diol contain benzyl azide in the ring) and diflouro derivatives. I want to know if the benzyl azide will still stable under nucleophilic...

08 September 2014 1,382 4 View

How can I prepare a membrane of solid polymer for fuel cell applications?

I want to prepare a membrane from solid aromatic block co-polymer for fuel cell applications. How do I do it?

08 September 2014 7,544 3 View

Can anyone help me find the best methodology to prepare polymer electrolyte for membranes?

I want to prepare polymers with sulfones or quaternary ammonium salts to used as membranes, I need some ideas for the best methodology in this way.

11 December 2013 5,233 1 View

How can the reaction of cyanoguanidine and ethylenediamine proceed?

Does anyone have an idea about that reaction? I want a nucleophilic attack of ethylenediamine on cyano group in cyanoguanidine. May it proceed in diluted HCl?

10 November 2013 6,824 3 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

Why does blocking with my immunogenic peptide cause nuclear fluorescence in ICC?

Hi all, I am validating a polyclonal antibody raised against human ANT4, through WB and ICC. In most of my controls, the antibody shows very little off-target binding, but when I pre-incubate the...

03 March 2021 5,999 3 View

Does Napabucasin soluble in dichloromethane and in ethanol?

I need to prepare a solution of Napabucasin (inhibitor of cancer cell stemness) in dichloromethane. The drug is expensive, so maybe somebody already tried to do it. If it is soluble, what is the...

02 March 2021 9,945 3 View

Help request in CST microwave?

im working now on TPV solar cells and metamaterials and i realy need our help in CST microwave i have a tpv cell simulation and i want to extract particullarly the absorbtion of only the active...

02 March 2021 2,246 2 View

Adherance of Polyaniline coating over stainless steel?

Is the electropolymerisation of polyaniline coating over stainless steel (SS) via Cyclic voltammetry technique is really adherant? Else how to improve the adhesion of the coating, whether any...

01 March 2021 8,220 2 View

Is there a method of determining feed digestibility without the need to re-pellet the feed?

I am aiming to determine the ADC values of a commercial fish feed, but I do not have a steam pelleter or extruder available to me. Ideally, the pellets could be coated with some inert marker....

28 February 2021 7,967 3 View

Dapi fluorescence protocol for colon cell lines ?

28 February 2021 2,534 2 View

How to immerse bricks in wax ( for coating ) ?

Do we immerse the bricks horizontally or vertically ? #bricks#waterproofingsurface#civil#engeenering#chemicalengineering#wax#parafinwax

28 February 2021 6,685 2 View

For gelatin coating for culturing HUVEC.Should the gelatin be made in sterile water or PBS? Do I need to autoclave the gelatin soln after making it ?

I want to use 0.1% gelatin. Should that be made in PBS or sterile water? Should I autoclave the gelatin soln after making it in water/PBS?

28 February 2021 274 2 View