I'm trying to synthesis a porous polyimide from the reaction of melamine and pyromellitic dianhydride and faced some problems in interpretation of its IR spectrum.
Dear all, Are there anyone send me a standard (ASTM) procedure to determine the solubility of a prepared polymer at aqueous buffer solution? We are trying to prepare an aqueous soluble polyimide...
31 December 2015 8,098 9 View
I'm trying to buy Ubbelohde Viscometer from Cannon Glass CO. to measure a viscosity of one prepared polymer. According to this company the size was terminated as 0, 0C, 0B, 1... etc.So which size...
07 August 2014 2,941 3 View
In my lab. I prepared a difunctional monomer, which contains two similar vinylic groups. Is there more than one exotherm that represents the homopolymerization and crosslinking polymerization...
31 December 2013 2,672 4 View
Are there any method for quantitative and qualitative determination of UV absorber in polyethylene bags, sheets, pipes and others?
01 February 2013 7,189 3 View
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
I am currently doing research on the adsorption of heavy metal using magnetic reduce graphene oxide. I use AAS to determine the concentration of the heavy metal. I prepare the Pb solution with...
26 February 2021 9,580 4 View
How to do acid digestion of soil sample with 3:1 aquaregia in an open vessel?
23 February 2021 3,053 7 View
I need to simulate the optical properties of a biomaterial, namely DNA, in COMSOL. Basically I need to simulate the IR absorption spectrum of a cylinder filled with a 'concentration' of DNA. I am...
21 February 2021 3,043 3 View
Hello, I am observing a nearly periodic background spectrum for a wide variety of SERS substrates. I see this response (attached below) for bare Au films, Cu films, and Au nanoparticles on...
15 February 2021 9,922 5 View
Currently, I am working on PLA-PEG copolymer micelle for the drug delivery system. I have seen several papers where some researcher talks to centrifuge the drug-loaded micelle to separate the...
13 February 2021 5,822 7 View
Please I want to write a proposal on the methodologies of AAS to determine heavy metals in water. please any link can help.
08 February 2021 3,587 7 View
Hi all, I am looking for some general feedback and information from those that have experience using handheld/portable systems? I am looking at the prospects of using an off the shelf system from...
07 February 2021 9,691 3 View
If we analyze the extract of two plants from the same species (for example) and there are very similarities between the two IR spectra except for the intensity of one peak at the same wavenumber....
05 February 2021 2,630 5 View
I synthesized 1T/2H hybrid phase MoS2 on a graphite foil surface by hydrothermal method, and then analyzed it by Raman spectroscopy. As a result, three new peaks correspond to the 1T phase were...
04 February 2021 6,580 2 View