Dye Solution
Chemistry Activity # 7.5: An Investigatory Project: Dyeing Using Indigenous Plants In this activity, you will plan and carry out experiments to answer specific research questions regarding dyeing of fabric materials. In the process of investigation, you will learn to practice the scientific method when you carry out controlled experiments. You can pool and share your results later with the other groups.
Questions that you may want to answer through your investigations:
1. Which fabric (a) cotton, a natural fiber and (b) rayon, a synthetic fiber is best dyed with mayana-alum dye combination?
2. Often, mordants are added to fix the dye onto the fabrics. These are usually inorganic oxides or salts which form colored complex with the dye. Which mordant is more suited for dyeing cotton with dye extracted from eggplant skins?
3. Which mordant is more suitable for dyeing a synthetic fiber with the synthetic extract from mangosteen skins?
4. Which plant extract when combined with alum is suitable for dyeing a synthetic fiber?
5. Which plant extract when combined with copper sulfate is suitable for dyeing cotton?
6. Does the acidity-basicity of the dye solution affect the quality of the dyed product?
What you need Dye materials: plant parts such as peelings of mangosteen fruit, purple camote, and eggplant or red mayana and pandan leaves Fabrics: cotton, rayon, or any synthetic fiber Mordants: alum, copper sulfate, iron (II) sulfate, sodium sulfate 500-mL beaker stirring rods tray Masking tape mortar and pestle scissors Hand gloves tweezers paper towel Hot plate/alcohol lamp
What you have to do
A. Designing your investigation
1. Select one question that you want to investigate from those given above. You may also modify the questions given and select your own plant materials and mordant.
2. Design the experiments that you will conduct to answer the selected question. Be sure you define your
Questions that you may want to answer through your investigations:
1. Which fabric (a) cotton, a natural fiber and (b) rayon, a synthetic fiber is best dyed with mayana-alum dye combination?
2. Often, mordants are added to fix the dye onto the fabrics. These are usually inorganic oxides or salts which form colored complex with the dye. Which mordant is more suited for dyeing cotton with dye extracted from eggplant skins?
3. Which mordant is more suitable for dyeing a synthetic fiber with the synthetic extract from mangosteen skins?
4. Which plant extract when combined with alum is suitable for dyeing a synthetic fiber?
5. Which plant extract when combined with copper sulfate is suitable for dyeing cotton?
6. Does the acidity-basicity of the dye solution affect the quality of the dyed product?
What you need Dye materials: plant parts such as peelings of mangosteen fruit, purple camote, and eggplant or red mayana and pandan leaves Fabrics: cotton, rayon, or any synthetic fiber Mordants: alum, copper sulfate, iron (II) sulfate, sodium sulfate 500-mL beaker stirring rods tray Masking tape mortar and pestle scissors Hand gloves tweezers paper towel Hot plate/alcohol lamp
What you have to do
A. Designing your investigation
1. Select one question that you want to investigate from those given above. You may also modify the questions given and select your own plant materials and mordant.
2. Design the experiments that you will conduct to answer the selected question. Be sure you define your