Can we expect a reduction in the population of particles in SEM images in the form of particles and after making their films?

I took scanning electron microscope images of my samples in powder form and after coating their films. In powder form, a large number of particles can be seen however, in the films only a few...

06 July 2019 1,956 4 View

What makes some of the diacetylene compounds highly UV sensitive?

05 June 2017 2,994 4 View

How is shift in Raman peaks of polydiacetylenes related to change in their conjugation length?

The shift in Raman peaks implies increase or decrease of conjugation length of polydiacetylenes?

03 April 2017 1,698 3 View

Why is it important to purify a polydiacetylene compound before use? What are the methods to purify them?

If we use 10,12 pentacosadiynoic acid for a reaction, is it mandatory to purify it before use? How can it be purified, without loosing its color sensitivity?

02 March 2017 1,724 1 View

Does the nanoparticle form of monomers increase the chain length during radiation induced polymerization?

During radiation induced polymerization of diacetylenes will it be useful to prepare monomers in nano range to increase the chain length.

11 December 2016 6,764 4 View

How is excitation energy transferred from the side group to the triple bond in diacetylene?

Diacetylenes are a conjugated system consisting of two triple bonds. The solid state polymerization of diacetylenes proceeds as 1,4-addition to the conjugated triple bonds and gives rise to...

06 July 2016 8,663 1 View

Can a hygroscopic chemical be insoluble in water?

Why?

04 May 2016 2,965 0 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

Polymer composites suddenly solidifies?

I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...

03 March 2021 7,540 4 View

How the parameters (such as Mw, Chemical bonds, polymer bland and so on) affect the mechanic property of polymer (such as storage, loss modulus) ?

Anyone can recommend any books on such topics? Thanks in advance.

02 March 2021 8,457 2 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

How do I determine the degree of polymerization of PEG 400 based on NMR integration?

Hello, I am working on the photocatalytic degradation of PEG 400. I would like to know if it's possible to determine the degree on polymerization based on NMR integration, or by the MW of the...

02 March 2021 6,186 3 View

How to polymerize TEOS?

I want to polymerize TEOS on a surface. I know that NH4OH is a preferred catalyst and an alcoholic solvent should be used .But I can not find certain amounts of each material to use. Does any one...

02 March 2021 1,404 6 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

What is the state of the drug inside solid lipid nanoparticles (SLNs)?

I am a little confuse with the mechanism of solid lipid nanoparticles (SLNs). The main point of encapsulating drugs into SLNs is because some drugs have low solubility in water. Therefore, SLNs...

01 March 2021 3,703 3 View

Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...

28 February 2021 6,477 1 View

Can polymer concentrations be calculated based on the number average molecular weight?

Hello, I spin-cast two different polymers onto wafers and measure their height as a function of initial concentration. For polymer A, I have the weight-average molecular weight (Mw) as well as...

28 February 2021 7,882 2 View