CHEM 4210/5210/6970

Supplemental Problem

 

Chapter 8

 

A. Following is a simplified recipe for the production of a polyacrylate latex.  All quantities are parts by weight.

 

Ethyl acrylate

93

2-Chloroethyl vinyl ether

5

Divinyl benzene

2

Sodium lauryl sulfate

3

Sodium pyrophosphate (buffer)

0.7

K2S2O8

1

Water

133

 

     What effects do the following changes have on the polymerization rate(in Interval II)?

 

     a) Using 6 parts sodium lauryl sulfate?

     b) Using 2 parts K2S2O8

     c) Using 6 parts sodium lauryl sulfate AND

          2 parts K2S2O8

     d) Adding 0.1 parts lauryl mercaptan (CT agent)