Question

You would like to make a hydrogel for growing a co-culture of bacteria and yeast in 3D to mimic soil conditions in the Amazon rain forest. You react 2.00 g of 3-(mercaptomethyl)-1,2,4-butanetrithiol with 6.04 g of a short PEG-methallyl as shown below. 1.1 What type of reaction is this? 1.2 What is the functionality of each monomer? 1.3 What is your critical branching coefficient? 1.4 At what conversion do you first observe gelation? 1.5 If you push your reaction conversion to 75% conversion, will the sol fraction in your reaction increase, decrease or stay the same compared to the sol fraction at the gel point? Explain why qualitatively?

          You would like to make a hydrogel for growing a co-culture of bacteria and yeast in 3D to mimic soil conditions in the Amazon rain forest. You react 2.00 g of 3-(mercaptomethyl)-1,2,4-butanetrithiol with 6.04 g of a short PEG-methallyl as shown below.

1.1 What type of reaction is this?

1.2 What is the functionality of each monomer?

1.3 What is your critical branching coefficient?

1.4 At what conversion do you first observe gelation?

1.5 If you push your reaction conversion to 75% conversion, will the sol fraction in your reaction increase, decrease or stay the same compared to the sol fraction at the gel point? Explain why qualitatively?

$You would like to make a hydrogel for growing a co-culture of bacteria and yeast in 3D to mimic soil conditions in the Amazon rain forest. You react 2.00 g of 3-(mercaptomethyl)-1,2,4-butanetrithiol with 6.04 g of a short PEG-methallyl as shown below. 1.1 What type of reaction is this? 1.2 What is the functionality of each monomer? 1.3 What is your critical branching coefficient? 1.4 At what conversion do you first observe gelation? 1.5 If you push your reaction conversion to 75% conversion, will the sol fraction in your reaction increase, decrease or stay the same compared to the sol fraction at the gel point? Explain why qualitatively?$

Added by Kelsey D.

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