How do I determine the amount of free butadiene and styerene from in process styrene-butadiene latex?

i am trying to find outh the simplest and accurate method of determing the amount of free/residual 1.3-butadiene and styrene from in process latex/polymerization. my challenge is to accurately...

03 April 2015 536 3 View

How does a 1,3- butadiene get converted to cis-2 butene during styrene-butadiene free radical cold emulsion polymerization?

We specialize in a styrene-butadiene emulsion polymerization, we run conversion to 60% and we recover the unconverted (1,3- butadiene) at a purity of average of 73% and major impurity is (cis-2...

31 December 2014 8,584 4 View

Any idea what I can do with unvulucanized emulsion-SB rubber waste resulted from auto-coagulation of latex during SBR manufacturing?

31 December 2014 3,301 9 View

What promotes the dimerization of 1.3-butadiene during redox emulsion polymerization?

11 December 2014 5,086 5 View

What is the effect of 4-vinylcyclohexene on the degradation of polystyrene and on the polymerisation of styrene?

11 December 2014 826 0 View

How can I improve the colour of emulsion SB rubber(1502)?

i am having a problem with color of sb rubber (1502) having a yellowish/brownish color, i would like it to be as white as possible, reciep used: soap-fatty acid and SA40...

10 November 2014 5,388 6 View

If sulphuric acid is replaced by an organic acid as coagulating agent for SBR, which organic acid will be best suitable for coagulation?

10 November 2014 4,537 1 View

How can I improve batch steam stripping of styrene butadiene emulsion polymerization?

10 November 2014 2,352 12 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 is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 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

12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

Hello everyone. Given microstructure image belongs to a 12% ledeburitic cold work tool steel (annealed and tempered). The sample was etched with picral (100 mL ethanol and 4 g picric acid). I...

02 March 2021 4,119 3 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

Ester cleavage conditions?

Hi all, I need to cleave the ester in Ethyl 2-amino-1H-imidazole-5-carboxylate to make the carboxylic acid and retrieve the product from solution to use in downstream applications of linking to...

01 March 2021 8,766 3 View