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

How can I optimize 1.3 butadiene purity from emulsion polymerization?

we specialize in 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...

11 December 2014 2,608 1 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

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

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

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

LEDs on Vis Light photo degradation of MB water sol via N doped TiO2 in a mini flume?

Good day to all, I have no experience with light emitting diodes. I am building a glass mini flume to demonstrate the photo degradation of Methylene Blue in water running over self cleaning...

26 February 2021 4,026 5 View

No title

I am trying to find how to know the density needed for a pva electrospinning in a 0.6mm neddle, the electrospinning will be from top to bottom and the problem I really have is the solution because...

25 February 2021 2,615 3 View

What is the optimum time and temperature of blanching and pre-frying potato for frozen fries?

I am helping a local home industry for developing frozen fries from their local farm. I want to know what is the optimum blanching and pre-frying temperature and time for processing. Please also...

23 February 2021 1,616 5 View

What is the best temperature to coat an ELISA plate?

Hello, I want to control the temperature of my ELISA plate during incubations to get consistent results. In general, what is the best temperature to coat the plate with antibody? I have been...

16 February 2021 2,377 7 View

How can we assess applied digital skills and soft skills through online examinations during COVID-19 semester?

The final qualification assessment for major programs is a strict regimen that involves different stages - oral and written exams, final project viva, internal and external review. How are ICT...

16 February 2021 1,762 8 View

Onset of Photo Oxidation in Polymers?

Hi! I am looking for some specific information in regards to the minimum amount of UV intensity required to begin the photo degradation process in polymers. I understand each polymer is...

15 February 2021 7,703 4 View

Are you looking for a quality online conference on teaching and learning technology?

This large international conference will be held online this year due to COVID. I am submitting a paper to the Technology Enhanced Language Learning track (8). It is about a topic I have never...

15 February 2021 1,975 15 View

How to apply a voltage sinusoidal/harmonic load in ANSYS APDL?

Hello all, I want to simulate a Dielectric Elastomer Actuator DAE (an electrostatic-Structural analysis). I want to apply various voltages and frequencies into the DEA in the form of sine wave....

13 February 2021 3,261 3 View