After copolymerization, how can I recognize the type of synthesized copolymer (alternate and random)?

11 December 2024 1 8K Report

To identify the type of copolymer (alternate or random), NMR spectroscopy is the most reliable technique. It reveals the sequence distribution of monomers in the polymer structure. Supporting methods include IR spectroscopy, gel permeation chromatography, thermal analysis, and elemental analysis. However, NMR spectroscopy provides the most definitive characterization of the copolymer's microstructure.

Badges
Science topic

More Payal Gupta's questions See All

How to understand this crystallographic phenomenon of low temperature crystals in zeolite?

During low-temperature testing, new diffraction peaks that appear could be indicative of several phenomena. In one of our tests, we observed notable new peaks around 40° and 45° in a specific...

06 August 2024 726 3 View

Short Synthesis of Graphene Oxide from Natural Graphite Flakes?

I am in search of a modified Hummer's method, which can be used to synthesis graphene oxide within 6-8 hours. As I am a student it is not allowed for us to work after 5 in the laboratory. So I am...

01 August 2024 8,368 2 View

Some new emerging problems on application of RL for scheduling in IoT networks?

I have seen plenty of existing works on applied Reinforcement Learning (RL) policies for optimized scheduling in IoT networks including Q-learning, DQNs, and the newer ones including PPO for...

01 August 2024 8,754 2 View

How to retain amplicon yield after Ampure bead cleanup, following a 2-stage PCR protocol?

Hello all, I have been trying to follow a 2-stage PCR protocol used to amplify barcodes of a large yeast library, as per Nyugen et al. (2022) -...

30 July 2024 841 2 View

How to add Cr parameter in autodock?

When I run autogrid4 it says: autogrid4: ERROR: Unknown receptor type: "Cr" -- Add parameters for it to the parameter library first! Look forward to your reply.Thank you so much!

29 July 2024 488 0 View

How to make soil water characteristic curve using centrifuge?

We have no access of pressure plate apparatus

22 July 2024 3,488 2 View

What is the degassing temperature and time for biochar for BET surface area analysis if TGA is not possible?

Since BET and TGA both are very costly instruments and many places the facilities are not available (for large number of samples) hence a threshold degassing temperature and time is preferable

16 July 2024 8,112 2 View

How Can I Resolve a Persistent Unwanted NMR Peak at 1.25 ppm?

Hello everyone, I am facing a consistent issue in my NMR spectra with an unwanted peak appearing at 1.25 ppm. This peak seems to vary with the amount of sample: it becomes more pronounced with...

15 July 2024 9,065 4 View

Intracerebroventricular (ICV) AAV inj.?

I'd like to know if anyone has got experience in intracerebroventricular (ICV) AAV inj. I am looking for a concomitant spread of the AAV including but not limited to the motor cortex and the...

12 July 2024 781 0 View

Can we analyse RMSD for peptide-HLA docking and binding affinity for peptide-HLA to TCR docking, in a peptide-HLA-TCR docking ?

In the peptide-HLA-TCR docking process, can we express the result of peptide-HLA docking in RMSD and for peptide-HLA to TCR docking, can results be expressed in binding affinity?

11 July 2024 4,831 0 View

What is Random Audit?

HI there, I've came across several articles discuss about random audit an Non random to tax evasion or compliance. Most of the articles is relating about effect of audit (random or non random)...

31 July 2024 5,309 7 View

Are there any alternatives to PhenoScanner?

I am currently conducting a mendelian randomization study, and I was attempting to use PhenoScanner to look for potential confounders associated with the selected SNPs (any SNPs significantly...

23 July 2024 5,703 0 View

Can ROBINS-I be used to measure risk of bias in single-arm studies?

I am doing a systematic review, and I am measuring risk of bias with RoB2 for RCT, and ROBINS-I for non RCT. My questions is, for single arm studies, can I use ROBINS-I? I am not sure how to...

14 July 2024 3,570 5 View

Can I use Repeated measures ANOVA for 2 samples with 2 time point ?

In RCT study designed I have 2 groups; one of them control group and the 2nd is intervention group. Each group with with 2 time point: pre management and post management. Can I use Repeated...

01 July 2024 1,999 11 View

How to adjust the survey weights for non-response rate in a stratified random sample design?

Thank you in advance for your support. We conducted a stratified random survey in 13 strata and obtained a sample size for each stratum. At the time of the survey we had a variable...

01 July 2024 281 3 View

Is there someone good in generating special quasi random structure ??

I want someone to teach whole ATAT tool kit Especially mcsqs and sqs2tdb I will pay for the classes

27 June 2024 8,496 0 View

Is there a specific FTIR figure if epoxy/ polysufide reinforced with Sic?

I have a copolymer if epoxy and rubber reinforced with Sic. I want a standard FTIR figure in transmittance mode.

20 June 2024 6,606 2 View

In CNN, is the feature map obtained randomly by convolution kernel?

In CNN(convolution neural network), can the feature map obtained determinately by a random initialization convolution kernel? if not, how to decide the weights in convolution kernel to obtain the...

20 June 2024 6,418 6 View

How to calculate the conversion of random copolymerization mixture?

I'm working on the RAFT copolymerization of MPC and NIPAm monomer, but I'm not sure how to calculate the total conversion from proton NMR? Is it an average of conversions of two monomers or just...

10 June 2024 7,430 2 View

the increase in ΔS0 from AC1 to AC2 (67 J/mol to 143 J/mol) ?

If we compare the values, the increase in ΔS0 from AC1 to AC2 (67 J/mol to 143 J/mol) indicates that the amount of adsorption is higher for AC2 compared to AC1. This increase in entropy means that...

10 June 2024 9,287 0 View