Tie Dye Experiment 

Objective: Use the process of dying fabrics to illustrate chemical reactions, equilibrium chemical bonding and pH.

Pre-lab Questions:

1.) Where did the art of dying fibers originate? 

-

2.) Originally, what type of substances were used to dye? 

- 

3.) What are the fibers of the shirt made of? 

- Cotton

4.) What chemical interaction is occurring when fibers are dyed? 

- 

Student Examples!

Data:

1.) Write down a synopsis of what occurred before the dying of the shirt.

- first we put the shirt in a bucket of water for 5min, then you put it in the pattern you want, after you start dying it & when you done let it dry for 24 hours, then you rinse it & let it dry again.

2.) Explain the process used to dye your shirt-pattern, tying method.

-  horizontal strips, roll the shirt from left to right (or vice versa), and tie the strings along the direction.

3.) After the shirt sat for 24 hours, describe the pattern of the shirt-picture, if possible. 

- it's all straight lines down each line has a different color.

Post-lab Questions:

1.) If you dyed a rainbow spiral on a shirt and then soaked it in a black dye bath, the result would be a black shirt with a rainbow spiral  pattern. Why doesn't the entire shirt dye black? 

-

2.) What is the purpose of soaking the shirts in the hot water for 5 minutes?

-

3.) Why is 100% cotton the best type of cloth to use with fiber reactive dyes? 

- because with a 100% cotton it takes the dye more. 

4.) What are some advantages of fiber reactive dyes? 

- 

5.) Explain how ironic bonding is used to dye the shirts in this lab. 

-