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
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Questions related to Polymers
Hi all, Which the following equations are used to calculate the thermal stress in polymers? What is their difference? 1- σ = EαΔT/(1 – μ) 2- σ = EαΔT
07 October 2022 140 1 View
The milled carbon fiber is uniformly dispersed in the matrix.
03 October 2022 1,467 2 View
Is it necessary to clamp the polymer electrolyte in between ion blocking electrodes in the presence of Ar atmosphere. If yes, what will be its expected effects?
13 September 2022 396 2 View
FR4 1.6 mm is easily available but 0.8 mm thick is rarely available.
16 August 2022 4,788 1 View
Hi. I am currently designing an experiment based on X-ray scattering and I was looking for a way of introducing some microvoids into a water solution. Hollow glass or polymeric microspheres may...
11 August 2022 5,259 5 View
Compression test to composite materials needed to be simulated by Ansys but the material doesn’t exist in Ansys library
28 July 2022 5,002 2 View
I am trying to build a DEA soft robot actuator using VHB/silicone and carbon grease, it's now operating in HVDC 6~7 KV, but people already achieved
25 July 2022 5,147 3 View
Why is tensile strength more important in joint strength analysis of Friction Stir Welding (FSW)? Why not other mechanical properties, such as yield strength, ductility, etc., are considered in...
25 July 2022 2,301 7 View
Good afternoon, I am trying to prepare solution for electrospinning with PEO,H2O and NaCl. The MW of PEO is 1,000,000. At the beginning I add 1,25% NaCl to 95,75% water under 25°C stirring, then...
25 July 2022 8,501 2 View
how to prepare a BSA stock solution, then how to dilute it to 10%? and sould i dilute it in PBS or water ?
18 July 2022 9,422 4 View
Hi! I am trying to etch Titanium dioxide 100-400nm diameter and 700 nm tall, Smooth and vertical sidewalls are important, does anyone have a starting recipe I can try? The following...
21 June 2022 6,365 0 View
How can one determine oxygen non-stoichiometry for ABO3 perovskites using XPS? Take for example, Ba0.5Sr0.5Co0.8Fe0.2O3-d. I will be glad if anyone could clearly and succinctly explain it. Thank...
12 June 2022 4,717 6 View
I have a 3D printed mold that I am using for transferring microfluidic features onto a thin PDMS membrane (~200 um). During the peeling-off process, either the features deform or the membrane...
08 June 2022 7,903 3 View
During a process of polyester staple fiber production, while the IV (intrinsic viscosity) of PET granules is within 0.63-0.64 dl/g, the IV of as-spun fiber output from spinneret is around...
22 April 2022 9,191 3 View
Hello, I need to synthesize a lithium-rich cathode using the sol-gel method. What is the best molar ratio between citric acid and transition metals in this method? Does citric acid have an effect...
20 April 2022 9,247 9 View
Hi, I want to do tensile analysis for my vulcanized rubber sample following the ASTM 412/ ISO 37. My starting rubber was ENR latex. As stated in that standard type 1, the standard thickness should...
13 April 2022 3,808 6 View
I am about to synthesis and characterize a bone scaffold to be used for bone regeneration and bone cancer therapy with the ability to release drug and oxygen for a better functionality, which...
05 April 2022 5,651 6 View
I asked my professor this question and all he said was "they bring lots of beauty and reef-building potential." I'd like to know more in-depth about how coralline red algae contribute to their...
30 March 2022 6,513 4 View
I saw in some papers that they use a beaker, in this case how do you keep the beaker sterile, and is there anything else where it can be quantified more easily
29 March 2022 9,988 0 View
I have periplasmic protein and it's 31 kDa. I applied the Bradford procedure to calculate the elution amounts of the proteins after purification. Then I did Dialysis and then bradford again....
29 March 2022 7,498 3 View
I am working on NaCMC based hydrogels.
19 March 2022 465 4 View
Hello all I am trying to prepare TiO2-Co doped nanoparticles thin films in order to study degradation of a dye. I will be using spin coating method to prepare the films. My question is if a...
11 March 2022 3,101 4 View
We have 200nm thick Aluminium foils and we need to find out the amount (percent) of UV light (100nm-300nm) they transmit. The CXRO website provides very reliable data but in the EUV/XUV range....
09 March 2022 282 1 View
I am doing electrochemical cleaning of bare gold electrode with weak sulfuric acid. Unfortunately, I obtained voltammograms which are very different from that found in literatures. Kindly see...
21 February 2022 1,640 8 View