Polymer Chemists' Network | Contact experts in Polymer Chemistry to get answers
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Questions related to Polymer Chemistry
Hi, I'm aware that thin film of PMMA can be spin coated. But I'm more interested in making few mm thick PMMA which will act as a substrate. Please share your expertise on how this can be...
22 November 2020 4,662 10 View
Hi, I am doing a click reaction with the CuAAC method. My product is water-soluble after click reaction and it doesn't move in reverse phase columns as it is a positively charged molecule. I...
13 November 2020 9,822 3 View
I have seen the terms "gravimetric capacitance", "volumetric capacitance", "areal capacitance" and "specific capacitance" used severally in different places but I cannot clearly distinguish...
10 November 2020 2,261 4 View
I made ice cream using red pitaya peel and i need to measure the DPPH inhibition percentage for both red pitaya peel and ice cream. As we know, red pitaya peel has such strong red purplish color...
28 October 2020 3,034 2 View
Dear colleagues, I have problem with tensile strength of polypropylene ribbon attached (with glue) to recycled paper. I have tried a lot of types of polyvinyl alcohole (PVAl) and polyvinyl...
19 October 2020 959 7 View
hello, I need help. Using the power-law model I calculated the flow index and get a negative value (-0.25). Is it possible for shear-thinning?
19 October 2020 1,308 0 View
All available protocols use the Percoll gradient to isolate T cells, unfortunately we only have Ficoll 1,077 available at the moment. Does anyone experience you with this type of isolation?
14 October 2020 7,773 3 View
By considering this article that i have attached, i don't wanna that amino acid have crosslink between two gellan gum (after NHS/EDC reaction and making amide bond between gellan gum and lysine)...
05 October 2020 4,513 1 View
Greetings everyone. The question is a bit vague, I know, but I couldn't think of anything else. So, I'm trying to synthesize PBI for HT-PEM Fuel Cells. I've made 6 tries so far and only the first...
01 October 2020 8,721 3 View
I have to end a reaction in process due to sone emergency. I was synthesizing poly glycerol sebacate. I reacted them at 170 under nitrogen for an hr and then stopped. Normal duration is 4 hr....
24 September 2020 7,933 5 View
I'm an intern in a big company which makes flexible polyurehane foam for the automotive sector and I'm working on sound absorption properties of PU foam. I'm not chemist so I'm trying to improve...
24 September 2020 3,876 4 View
My thesis is about the fracture behavior of adhesive joints by using Arcan fixture and butterfly specimens in the experimental tests with 0.3 mm of adhesive thickness. I wanted to know how to...
24 September 2020 1,493 1 View
Hello everyone. I am currently doing dynamic study on a distillation column. How can I do sensitivity analysis on the column i.e., change in feed conditions (temperature, pressure, flowrate). I...
21 September 2020 2,494 4 View
Nanofibril is a term that keep confusing me when reading research articles. I always find it difficult to distinguish between nanofibril and nanofiber.
21 September 2020 8,203 4 View
Hello everyone, I present here again with a problem relate to MoS2. I start to work on MoS2 so I have a lot of problems regarding lattice parameters, d-spacing, crystal structure, direct and...
18 September 2020 6,137 3 View
Is IR spectroscopy sufficient for characterisation of transition metal complexes of phenolic acids.
14 September 2020 2,863 12 View
I have a DSC curve for the resol resin matrix attached with the file. The heating rate at DSC was about 10k/min. How do I choose the Autoclave parameters for curing of Glass fibre resol...
10 September 2020 4,852 5 View
what is the difference between Fourier Transform Infrared (FTIR) and Filter Infrared (FIR) Spectrometers ?
07 September 2020 4,599 8 View
We are making polyurethane foam wound dressing and the amount of water absorption is very important. This foam is made of pre-polymer contains TDI and PEG.
25 August 2020 4,013 4 View
Hello Everyone! I have article for my reaction where %5 Pd/C is used as catalyst. But our chemical supplier currently can provide %10 Pd/C. Can I use %10 Pd/C instead of %5 Pd/C? and Will there be...
24 August 2020 800 5 View
I am estimating SOD activity by markland and markland method in which I am not able to understand that how to calculate protein concentration which is a used as the denominator in the estimation...
19 August 2020 9,361 3 View
Could someone offer advice on how to DLS droplet size measurement of Pickering emulsion of cellulose nanocrystalline dispersed in cyclohexane/water? I want to check whether there is any...
10 August 2020 9,661 2 View
Hi I am designing a small groundwater treatment plant for a rural area near me. I need to simulate my nanofiltration membrane as part of this project. Do you have any suggestions for possible...
29 July 2020 8,993 3 View
i am trying to disperse nanocrystalline cellulose in ethyl alcohol or toluene for making a composite of Nanocellulose/paraloid b72 , if i freeze dried it will diperse or i need chemical...
28 July 2020 4,126 0 View