Why is there no peak for H of OH groups in polysaccharide derivative H-NMR in DMSO-d6?

04 May 2015 2,509 18 View

How can I calculate the wall thickness for a vacuum distillation system?

01 February 2015 8,757 10 View

How to prepare galacturonic acid oligomer?

I want to prepare galacturonic acid oligomers with 5-8 repeating units. How should I do this? Is it possible to prepare it from pectin hydrolysis? How?

10 November 2013 9,685 5 View

Polyethylene glycol isocyanate preparation by curtius rearrangment?

How can I convert the monomethyl-PEG-COOH (M.W 500 dalton) to its isocyanate derivative? I think using of curtius rearrangement is possible, but I couldn't find any references for this conversion...

10 November 2013 7,816 0 View

Nitrie or amide reduction to amines?

I'm going to prepare a polyamine from polyacrylamide or polyacrylonitrile. I want to know if the Clemmensen reduction is a good way to convert the nitrile or amide groups into the amines? Does...

09 October 2013 7,546 5 View

Chitosan crosslinking?

I'm trying to prepare some chitosan nanoparticles. Is it possible to make chitosan nanoparticles using glutaraldehyde as a crosslinker? How? And what is the form of nanoparticles (flake or...

09 October 2013 722 5 View

Can chitosan alone can act as a reducing agent for Cu(0) nanoparticle sythesis?

[Synthesizing Cu nanoparticles without using chemical reductants]

01 March 2021 8,359 1 View

What are the new 2D nanomaterials were used for Silver nanoparticles stabilization?

In the stabilization of AgNPs are vital in current research interest. However, some of the 2D nano-materials like graphene oxide, MoS2, etc... previously used to stabilize it. But still they shown...

01 March 2021 2,207 3 View

Apart from Nanosilica and CNT's what are the other nanomaterials readily available to use in concrete mixture?

Nanotechnology in concrete materials

01 March 2021 3,379 3 View

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

Alginate and silk fibroin hydrogels toxic to cells?

Hello, I asm currently working with alginate and silk fibroin hydrogels. I prepared a blend of alginate and aqueous silk fibroin (straight from dialysis) and resorted to ionic crosslinking to...

23 February 2021 8,249 2 View

How to calculate refractive index (n and kvalue) against energy (in eV) data for alloyed nanomaterials through Independent Phase Approximation method?

Suggest me the method or some other software to calculate the above said data for nanoparticles.

21 February 2021 3,350 7 View

What is the best substrate for exfoliating few layers of hexagonal boron nitride (hBN) using traditional scotch tape method?

Unlike graphene, it is usually very difficult to exfoliate few layers (~10 nm thick) of hBN on SiO2 substrate due to lip-lip interaction at the edges. Au substrates have been proven very useful...

16 February 2021 2,635 2 View

How to calculate the polysaccharide content of a curcuma species through HPLC method?

what all standards are needed to quantify and analyze the composition with a proper method fie for the mobile phase to run the sample ?

31 January 2021 7,704 4 View

Suggestions for using antisense oligonucleotide for brain delivery?

hello I am working on a project that includes gene delivery to the brain. my intentions are encapsulating a gene in a Chitosan NP and IV administration the NP to rats. beside plasmids is there...

29 January 2021 4,455 5 View

How to find degree of deacetylation of chitosan colorimetrically?

I am working with low DD% chitosan. It doesn't dissolve completely in acidic solutions. How to calculate the degree of deacetylation by potentiometric and acid-base titration, UV spectroscopic...

27 January 2021 8,532 2 View