Compounds formed by the joining of smaller, usually repeating, units linked by covalent bonds. These compounds often form large macromolecules... | Contact experts in Polymers to get answers
1,083 views 883 posts
Questions related to Polymers
In the lab, there is titanium dioxide (TiO2, Sigma, purity 99.9%). Can I put it directly into the solution when using it in photocatalysis experiments? If I put it directly into the solution, the...
23 September 2021 2,770 8 View
I'm hoping to modify a vacuum chamber so that it can be used for the deposition of silicon nitride using ammonia and nitrous oxide. However, I'm having trouble specifying an appropriate material...
20 September 2021 3,707 5 View
Can anyone provide values of polar and dispersive components of acetic acid and its Hansen solubility parameters?
20 September 2021 5,314 1 View
Using the pdb2gmx module, I separately parameterized two proteins (polymers), I used the topologies of both and joined them in a single topol.top file. I have minimized the energy and the gromacs...
16 September 2021 6,267 1 View
Hello to all, I'm trying to apply REAXFF forcefield on my PE model in LAMMPS. Everything is good with the REAX/C. But it seems that REAX/C doesn't work for model with bonds information. Thus, I...
04 September 2021 1,116 6 View
I prepared some copolymers containing SBMA block. Can I purify the SBMA-containing polymers via precipitation? If so, what is the ideal nonsolvent to precipitate the polymer?
28 August 2021 9,890 6 View
I would like to know the changes in crystallinity of polymer film, caused by biological degradation. As of my basic knowledge acquired by other literature, either FT-IR or XRD analysis can show...
27 August 2021 8,993 5 View
Hello, if I perform an FTIR analysis of a polymer mixture in brine? I can still determine whether there is an interaction between polymers? For instance, an ftir analysis for HPAM and Xanthan gum...
25 August 2021 6,502 3 View
Which is more biodegradable, HPAM or PEO? I know both polymers are biodegradable but which is more? Thank you.
23 August 2021 5,304 2 View
The image is taken From Callister's Materials Science and Engineering. After glass transition, the polymer chains are mostly free to rotate and wiggle, but cannot slide past each other until...
22 August 2021 8,688 3 View
If there exists such relation, then why is this so? If such relation doesn't exist, than which molecular factors contribute to endurance limit of polymers? The image of Stress vs Fatigue cycle is...
22 August 2021 5,346 3 View
I want to remove the photoresist after the lithography process. I don't want to use a photoresist stripper or acetone. So, I thought of a way to remove the photoresist by exposing the entire...
21 August 2021 6,657 3 View
because the pdms with benzonyl peroxide, as the article says, does not crosslink the polymer pdms without any dopant at 150 degrees 160, 170 and 180 degrees, there is some other crosslinking agent...
20 August 2021 334 2 View
Hello All, I want to conduct some experiments with high molecular weights PVPh, however the available molecular weights on Scientific Polymer Products, Polymer Source. Inc. and any other such...
17 August 2021 6,366 6 View
Hi, I've browsed around and couldn't find any companies selling self-healing polymers on a commercial scale. Would anyone here happen to know?
14 August 2021 548 3 View
EMI shielding, Composite, Polymer
12 August 2021 2,822 4 View
I'm trying to etch TiO2 film by RIE. There is 200nm thick photoresist(Shinetsu, SEPR-701) structure, under that there is bulk Anti reflection coat layer(Brewer science, DUV-252) of 100nm,...
11 August 2021 4,962 2 View
Hello all, I would like to understand the laser intensity and temperature at the heat-affected zone at the polymer interface. Is there any formula or engineering table or relation between the...
10 August 2021 7,311 3 View
Imagine I mix those two polymers together and want to dissolve only one of the mentioned polymers. What are the best options I have for a solvent? This is not my field of expertise, so any tips...
10 August 2021 7,690 3 View
I am using an intel core i5 and 4GB RAM computer to calculate DFT (6-31G basis set) calculations for C, N, S based polymers. I have GaussView 6.0 and Gaussian 09 Revision-D0.1 SMP. So, does anyone...
29 July 2021 8,818 2 View
I am interested in measuring the zeta potential of the polyethylene particles in water. Can I measure it in the form of suspension (PE+ water) or solid particles only ? Any reference material...
29 July 2021 6,525 4 View
Hi everyone, Recently, we have had a critical situation regarding water-resistance of one of our pressure-sensitive adhesives formulations. Water-resistance is measured by rubbing with a finger...
26 July 2021 3,880 2 View
I gone through few literature I got the possible answer for Hansen's Solubility Parameter (HSP) for solvents and Polymer. I am searching the HSP value of BaTiO3. But I did not get any suitable...
26 July 2021 8,120 8 View
Hi everyone! I would like to hear your recommendations about the best chemical software to design polymers.
22 July 2021 853 3 View