Question
Vocabulary:
Solution Binding Pigment Absorption/Absorbed Solubility Solvent
Fiber Solute Mordant Dye Electrostatic
The process of solution dyeing involves dissolving a pigment (something that gives color) in a solvent, most commonly water, and the fabric or fiber is placed in the solution. Different fibers will absorb dyes differently. For example wool binds natural pigments very well while cotton has a more difficult time. Sometimes substances called mordants are added to the solution to help in the absorption and binding of the pigments. A mordant helps to fix (set) or bind the pigment to the fiber by creating an electrostatic complex between itself and the pigment and then bonding with the fibers. Some examples of mordants are salt, vinegar, alum, copper, and potassium.
Question
Question 2: You just bought a new pair of deep blue jeans. You threw them in the wash with some of your other clothing. When the clothes were done, you noticed that one of your white shirts had become dyed slightly blue. Explain why this might have happened based on the science of dyeing you learned about in this lab.
Optional Sentence Starter:
"The dye might have transferred to the shirt because..."
"When the clothes were washed, the shirt got dyed because..."
"I know this because..."
(1 point)
Solution Binding Pigment Absorption/Absorbed Solubility Solvent
Fiber Solute Mordant Dye Electrostatic
The process of solution dyeing involves dissolving a pigment (something that gives color) in a solvent, most commonly water, and the fabric or fiber is placed in the solution. Different fibers will absorb dyes differently. For example wool binds natural pigments very well while cotton has a more difficult time. Sometimes substances called mordants are added to the solution to help in the absorption and binding of the pigments. A mordant helps to fix (set) or bind the pigment to the fiber by creating an electrostatic complex between itself and the pigment and then bonding with the fibers. Some examples of mordants are salt, vinegar, alum, copper, and potassium.
Question
Question 2: You just bought a new pair of deep blue jeans. You threw them in the wash with some of your other clothing. When the clothes were done, you noticed that one of your white shirts had become dyed slightly blue. Explain why this might have happened based on the science of dyeing you learned about in this lab.
Optional Sentence Starter:
"The dye might have transferred to the shirt because..."
"When the clothes were washed, the shirt got dyed because..."
"I know this because..."
(1 point)
Answers
GPT 3.5
"The dye might have transferred to the shirt because the deep blue dye used in the jeans was not properly bound or absorbed by the cotton fibers. Without the proper mordants or binding agents to help fix the dye to the jeans' fibers, the dye easily transferred to the white shirt during the wash cycle. I know this because different fibers absorb dyes differently, and cotton, like the shirt, can have a harder time binding certain types of dyes."