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 ?
answer: The art of dying fibers originated from China or India.
2.) Originally , What type of substances were used to dye ?
answer: Leaves , fruit stems , wood , flowers , and roots.
3.) What are the fibers of the shirt made of ?
answer: Cotton and cellulose molecules , all twisted together.
4.) What chemical interaction is occuring when fibers are dyed ?
answer: Oxygen and chloride is bonded together to make fabrics stick together.
Data:
1.) Write down a synopsis of what occured before that dying of the shirt.
- Step one: Grabbbed a white cotton t-shirt.
- Step two: Soaked it for five minutes.
-Step three: Twriled it around the way I wanted it.
-Step four: Rubberband around it.
Step five: Tie dyed it.
2.) Explain the process used to dye the shirt - patter , tying method.
answer: I used the spiral one. Ipinched the middle and kept doing it until it was all doen. Then i put rubberbands around it so it won't fall apart.
3.) After the shirt sat for 24 hours , describe the patter of the shirt ?
answer: It didn't exactly come out how i wanted it to be. But it came out cute abd now all the way twirled right.
Post-lab Questions:
1.) If you dyed a rainbow spiral on a shirt and then soaked it in a black dye bath , the results would be a black shirt with a rainbow spiral pattern. Why doesn't the entire shirt dye black ?
answer: The entire shirt does not dye all black because you already tied up a spot and put rainbow in it. Once you put dye on one spot it is permanet.
2.) What is the purpose of soaking the shirt in the hot water for five minutes ?
answer: To take off the hydrogen. Also as well to let it be wet before tie dying so it could work better.
3.) Why is 100% cotton the best type of cloth to use with fiber reactive dyes ?
answer: It indicates that the hypothesis was correct. Cotton fabric retained the color most vibrantly and would probably hold the coloration over time better then any other type of shirt.
4.) What are some advantages of fiber reactive dyes ?
answer: The advantages of fiber reactive dyes include ease of use , brilliant colors , relatively low toxicity , and good wash fastness.
5.) Explain how ionic bonding is used to dye the shirt in this lab ?
answer: Its when you have the color soaked in already in the shirt. Ionic bonding is a type of chemical bond formed through an electrostatic attraction between two oppsitely charged ions.
The front of the shirt.
The back of the shirt.
