Polymer Chemists' Network | Contact experts in Polymer Chemistry to get answers
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Questions related to Polymer Chemistry
Please, in order to be able to analyze the mineral composition of an aqueous extract of plants in ICP , how can we prepare the samples? what are the steps to do the acid dissolution? choose solid...
27 September 2022 5,213 6 View
In the future, fuel cells could power our cars, with hydrogen replacing the petroleum fuel that is used in most vehicles today. Many vehicle manufacturers are actively researching and developing...
22 August 2022 5,066 7 View
Hi, could anyone please guide me on creating an AC current/voltage source using a Math expression or a measurement profile (in a text file) on a Keithley Source meter? We have 2400 and 2450 models...
20 August 2022 8,012 0 View
I know, for example, that you can use a Gaussian distribution in order to model the heterogeneities introduced in the strut diameter of lattice structures. Then, using Timoshenko beams, FE models...
18 August 2022 4,951 0 View
We are experimenting with SU8 2000.5 (0.5 um thick) on GaAs substrates. Quite often, the part of the resist that has *not* been exposed cannot be removed using SU-8 developer. This issue has...
10 August 2022 9,574 0 View
I am trying to optimize the Gd(III) complex. I have tried with def2-SVP basis set, but unable to optimize it. Can anybody suggest a suitable basis set?
09 August 2022 4,824 5 View
These nanoparticles oxides will be coated on ceramic membrane for Oil-in-Water Emulsion treatment.
08 August 2022 8,478 3 View
I have used wet samples and dried film samples for Tg in DSC but I could not get any major peak.
05 August 2022 8,700 2 View
I am following this procedure for PDMS channel and SU8 covered microchip using APTES 99% and oxygen plasma treatment. Both the chip and the PDMS channel are activated first by the plasma and...
04 August 2022 2,923 3 View
I have a problem with my dissertation research in forming or producing PVA hydrogel with freeze-thaw method. After freeze-thaw treatment, PVA is drained in the incubator but still can not produce...
01 August 2022 332 7 View
Do 2D MOFs have something like a MOF ID like the ones used by the Core MOF database? Is there a way to identify them on a database like the Materials Project?
27 July 2022 5,831 0 View
hello everyone, I have tested a sample of bulk fill dental composite for mechanical features and the results are confusing. The compressive strength should be lower than the flexural strength in...
24 July 2022 8,016 3 View
I want to know about the amount of perlite appropriate to use and also some physical properties such as density, particle size and molucular weight which it can used in pvc pipe production.
05 July 2022 7,082 5 View
Previous test showed that polypropylene fiber has poor adhesion to epoxy resin. Consequently, the mechanical properties of reinforced resin are reduced. From some literatures, the reason for poor...
23 June 2022 6,542 4 View
Or esle how can we do that, I have to simulate Magentohydrodynamic (lorentz force on fluids due to electric current moving through it) effect in cylindrical vessel containing fluid,
20 June 2022 8,638 0 View
Dear all, I've managed the DSC anaysis of 0.5 % NIPAM solution by using deionized water as reference. I operated METTLER TOLEDO DSC for this experiment with conditions; temperature range from 20...
13 June 2022 7,566 5 View
Does Big Area Additive Manufacturing (BAAM) demonstrate any plastic deformation before crack initiation?
13 June 2022 3,482 1 View
Hello. In a project I'm willing to try DFT-based force fields applied to molecular crystals. I don't have any problems with DFT and I understand the procedure of the force matching, but how is it...
12 June 2022 1,175 0 View
Let's say, I prepared nanoparticles. As a response I would like to use "stability over two weeks". Can one use such "categorical" response or needs to make it numeric anyway, say "% of diameter...
10 June 2022 3,915 1 View
Many people chose multi=1 and (td=triplet, root=x) for TDDFT to calculate Tn. Why do they use multi=1 not multi =3? To my understanding, when calculating triplet state, multi=3 is used.
07 June 2022 4,492 0 View
It is known that bands at 2920 and 2850 cm-1 in FTIR spectra are assigned to the asymmetric and symmetric stretching vibrations of (CH2) groups. One peak at 1920 cm-1 was observed in the FTIR...
04 June 2022 5,054 2 View
I want to design an experiment for measuring the melting, hardening rates of different types of plastics. The equipment that are current available includes; a closed furnace with control valve,...
03 June 2022 2,912 1 View
After u have synthesize a resin by alcoholis n esterification process and the resin obtain is solid black in color and you want to whiten it How do u achieve tht after finding a suitable solvent...
21 May 2022 7,548 0 View
Reaction of APTES on silicon wafer
19 May 2022 7,770 2 View