What is the effect of the number of alcohol C-atom on the swelling degree of PVA??

I am trying to study the swelling behavior of modified PVA films in different alcohol and organic solvent

01 February 2018 2,669 3 View

What is the difference between MMM, hybrid and nanocomposite membrane??

If nanoparicles in-situ generated in polymer mixture , will it be MMM or nanocomposite or hybrid membrane ??? And , if they just dispersed in the polymer matrix after synthesis , what will it be ??

11 December 2017 4,012 3 View

How to make a nanoparticles stable in mixed matrix membrane ??

01 January 1970 9,072 6 View

How to peel of a membrane from a glass substrate without damaging it ?

01 January 1970 9,586 10 View

How to cast a polymer on commercial porous membrane without filling the pores?

01 January 1970 5,512 5 View

Why is the preparation of composite nanofiltration membrane using PVA as the selective layer using a casting knife not reproducible?

01 January 1970 555 4 View

I am preparing a 700 ml PVA solution , 10 % wt Should i heat it directly or through a water bath ?

What happened is the bottom of the beaker start to be burned and the solution is pale yellow color , Is it normal ?

01 January 1970 2,028 4 View

Are the silver nanoparticles stable in ethanol ???

During the pervaporation process using PVA-AgNPs membrane, after the 2nd exp. the silver nanoparticles dissolved in the solution

01 January 1970 5,959 5 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

Polymer composites suddenly solidifies?

I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...

03 March 2021 7,540 4 View

How the parameters (such as Mw, Chemical bonds, polymer bland and so on) affect the mechanic property of polymer (such as storage, loss modulus) ?

Anyone can recommend any books on such topics? Thanks in advance.

02 March 2021 8,457 2 View

How do I determine the degree of polymerization of PEG 400 based on NMR integration?

Hello, I am working on the photocatalytic degradation of PEG 400. I would like to know if it's possible to determine the degree on polymerization based on NMR integration, or by the MW of the...

02 March 2021 6,186 3 View

How to polymerize TEOS?

I want to polymerize TEOS on a surface. I know that NH4OH is a preferred catalyst and an alcoholic solvent should be used .But I can not find certain amounts of each material to use. Does any one...

02 March 2021 1,404 6 View

Can polymer concentrations be calculated based on the number average molecular weight?

Hello, I spin-cast two different polymers onto wafers and measure their height as a function of initial concentration. For polymer A, I have the weight-average molecular weight (Mw) as well as...

28 February 2021 7,882 2 View

Dapi fluorescence protocol for colon cell lines ?

28 February 2021 2,534 2 View

POlymer+DMSO solution and moisture??

What could be the reason of moisture at the sides of Vial when I am preparing my polmyer+DMSO solution for membrane fabrication? What etiquettes I am possibly missing here?

28 February 2021 6,516 5 View

How to compare 2 samples recruited with different sampling methods?

If I want to compare characteristics of 2 groups of patients, one group is recruited from a random sample of the general public while another group is from a sample with a fixed gender (male to...

26 February 2021 3,526 3 View