Is there any way to prove that polyerization reaction at solid-vapor interface is faster than liquid-liquid interface?

Hello, is it possible to calculate by any means or theoretical equation that a reaction at solid-vapor interface should be faster than liquid-liquid interface. In theory, at high temperature, the...

02 March 2020 518 1 View

How to do BET of a few 100nm membrane on top of porous support?

I am trying to find the BET surface area of a polymer membrane, pore size of below 2 nm which is supported on top of a microporous support (I can choose any such as PES, PTFE, PVDF, Nylon or any...

01 February 2019 8,123 2 View

How to put a SiO2/ZrO2 layer on Al2O3 support?

Hello, I want to put a SiO2/ZrO2 layer on AAO support and intend to grow a membrane for gas separation. Is there any easy way to grow this layer on AAO support? Thanks

31 December 2017 240 3 View

How to titrate aromatic NH2 in a polymer?

hello, I want to react polymer with TMC. My polymer has active amine group. I don't know how to quantify NH2 groups in my Polymer which is required to calculate the moles needed of TMC for such...

10 November 2017 9,539 6 View

Will there be monomer molecules in vapour phase, if I boil it's solution in auto-clave?

05 June 2017 5,852 2 View

Any hazardous biomolecule/proteins with diameter more than 2nm?

Hello, Sorry to ask such a basic question but unfortunately I have no access to google or Google scholars. I need to use my membrane (pore size 1.8nm) to separate some hazardous bio-molecules...

01 January 1970 9,117 2 View

Any Dye with molecule size larger than 2nm?

Hello, I have prepared a membrane but the theoretical pore size is around 1.8nm. Does anyone knows a dye with molecular size larger than 1.8nm? I want to do the separation experiments on this...

01 January 1970 1,311 5 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 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

What techniques can I use to determine the miscibility of polymer blends?

The term miscibility refers to the single-phase state in thermodynamics. I do not mean the compatibility of different components. To determine the miscibility I know several techniques such as...

03 March 2021 4,107 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

Discrete Phase model (DPM) particle break-up has particle size limits during particle tracking?

Hello, I am currently working on simulating water droplet partciles in a closed room. When I use uniform particles, without "particle break-up", I can carry out the simulation without any problem....

02 March 2021 3,053 2 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

Distribution of particles in metal matrix?

How would define the "good" and "poor" distribution of particles within the matrix. Is there a quantitative solution to assess the distribution of the particles, which then having denotation of...

28 February 2021 7,397 8 View