Objective
The goal of the “Bioplastics Experiment” would be to show the scholars the pros and cons of managing a fractional factorial. The scholars operate a 2^k-1 fractional factorial to find out which amounts of bioplastic ingredients / cooking method produce the highest quality bioplastic. The scholars split up into four groups. Each group selects another bioplastic Milk plastic, Stovetop corn plastic, Microwave corn plastic and Flubber. Each recipe has four factors that may be tested at two different levels. The standards may either be component amounts, cooking occasions or cooking temperatures. Because the students rapidly learn while running the experiment, each run takes a lot of time. Therefore, the benefit of running only 8 runs instead of 16 runs from the full factorial is important. Additionally they learn while running case study the disadvantage, by means of aliasing, of managing a fractional factorial.
Equipment - per group
Making bioplastics requires various kitchen supplies and a few perishable products. The scholars are needed to buy and produce to class the perishable products because both versions are often acquired from the local supermarket. Each group is provided having a common group of supplies additionally to some supplies which are specific for their kind of bioplastic.
- 1 cookie sheet (group of 3 for $16.99. Target)
- 1 mixing spoon ($1.99, Target)
- 1 group of calculating cups (group of calculating cups and spoons $9.99, Target)
- 1 group of calculating spoons (see above)
- 1 roll of aluminum foil ($3.59, Kroger)
Procedure
Assign the next tasks to various team people in your team 1) Measurer (Measures the ingredients and flows them within the containers.), 2) Mixer/oven (Mixes the components. Heats and/or cooks the components.), 3) Observer (Observes the experiments and takes notes.), 4) Squeezer/Spreader (Squeezes (if needed) and spreads the plastic. This individual also measures multiplication from the Flubber.), 5) Labeler (Labels the various plastic samples.), and 6) Plastic keeper (Keeps the plastics and brings it to the audience following the needed 48 hour waiting period.). Result in the standard recipe plastic before you are comfy you have designed a effective plastic. Result in the first recipe combination as mentioned around the data sheet. The observer must take lower any notes that she or he feels is pertinent (e.g. the plastic was difficult to work, the plastic fell apart, etc…). Make certain that you simply reference these notes back to the stage combination that's being tested. Label your plastic after it's put on the aluminum foil. Like a group, arrived at a consensus in your response value and come in in your data sheet. The response ought to be a family member number using the standard recipe to be the reference. Result in the next recipe combination.
Analysis and Discussion
Provide a summary from the analysis procedures. Include P-values, primary effects and interaction plots. Which factors and interactions are significant? Don’t forget to say the alias structure and then any assumptions that you're making. If none of the factors/interactions are significant, justify this and discuss why? If some or all your factors/interaction are significant, optimize your factors settings to create what you believe is the greatest plastic. Use any plot/equations you are feeling are needed to get this done. Use in the discussion section, what affect each one of the active components within the recipe is wearing the plastics qualities. Back this track of referenced information. Plot and discuss your residuals.
Flubber
Equipment
- 2 bowls (6” bowl $1.57 each, Target)
- 1 stopwatch ($9.99, Target)
- 1 microwave ($64.99, Target) – Used jointly using the “Microwave plastic” group.
Student supply list
The scholars buy the following products and produce these to class at the time from the experiment Elmer’s school glue (enough for 4 cps), 20 Mule Team borax (enough for 8 teaspoon), water (enough for 8 cps), and food coloring (optional).
Standard Recipie
The conventional Flubber recipe is 1/3 clubpenguin Elmer’s glue, 1/2 clubpenguin tepid to warm water, 1/2 teaspoon 20 Mule Team borax, and 1/4 clubpenguin tepid to warm water.
Component Levels
The component levels for Flubber are Bowl#1 - Elmer’s glue (Low = 1/3, High = 1/2 clubpenguin), 1/2 clubpenguin water (Low = cold, High = warm (1 min within the microwave)), Bowl #2 - 20 Mule Team borax (Low = 1/2 teaspoon, High = 1 teaspoon.), and 1/4 clubpenguin water (Low = cold, High = warm (1/2 min. within the microwave)). Observe that the microwave cooking occasions are microwave dependent. The microwave utilized in this experiment was really low wattage.
Procedure
In Bowl #1 add some preferred quantity of water as well as heat if required. Add some preferred quantity of glue. Mix until uniform. Add food coloring. In Bowl #2 add some preferred quantity of water as well as heat if required. Add some preferred quantity of Borax. Mix until uniform. Add some Borax mixture towards the Glue mixture and stir until it might be a uniform glob. Put the flubber around the aluminum foil, measure its diameter and note this around the data sheet. Wait about a minute, appraise the diameter again and note this around the data sheet. The number of both of these diameters is going to be understood to be multiplication. Characterize the Flubberness of the sample and note this around the data sheet. Put the samples aside for 48 hrs. Appraise the Spread and Flubberness of every sample.
Milk Plastic
Equipment
- 1 large bowl (1” bowl $8.39, Target)
- 1 metal strainer ($17.99, Target)
- coffee filters (100 for $2.49, Kroger)
- 1 cooking pot ($29.99, Target)
- 1 cooking thermometer ($6.49, Target)
- 1 2-burner hot plate ($34.99, Target) – Used jointly using the “Stovetop Plastic” group.
Student supply list
The scholars buy the following products and produce these to class at the time from the experiment dairy (enough for several liters), skim milk (enough for several liters), vinegar (enough for six cps), and food coloring (optional).
Standard Recipie
The conventional recipe for Milk plastic is 1/2 liter of skim milk heated to 160OF and a pair of Tbsp . vinegar.
Component Levels
The component levels for Milk plastic are milk type (whole, skim), milk amount (1/2 liter, 3/4 liter), milk temperature (160OF, 180OF), and vinegar (2 Tbsp ., 3 Tbsp .).
Procedure
Heat the preferred quantity of milk towards the preferred temperature and take away the thermometer. Switch off the stovetop and add some preferred quantity of vinegar. Stir the mix before the milk separates. Strain the mix right into a paper coffee filter based on the metal strainer. Squeeze the mix to get rid of excess liquid. Put it around the aluminum foil and spread it to some uniform thickness. Characterize the workability from the plastic and observe that around the data sheet. Let dry for 48 hrs. Appraise the hardness and strength from the plastic and note this around the data sheet.
Microwave Corn Plastic
Equipment
Student supply list
The scholars buy the following products and produce these to class at the time from the experiment corn starch (enough for several cps), oil (enough for just two cps), water (enough for 10 cps), vinegar (enough for just two cps), and food coloring (optional).
Standard Recipie
The conventional recipe for Milk plastic is 1/2 liter of skim milk heated to 160OF and a pair of Tbsp . vinegar.The conventional recipe for Microwave corn plastic is 1 Tbsp . corn starch, 1/2 teaspoon oil, 4 Tbsp . water, and 1 teaspoon vinegar.
Component Levels
The component levels for Microwave corn plastic are corn starch (Low = 1 Tbsp ., High = 1 1/2 Tbsp .), oil (Low = 1/4 teaspoon, High = 1/2 teaspoon), water (Low = 4 Tbsp ., High = 5 Tbsp .), and vinegar (Low = 1/2 teaspoon, High = 1 teaspoon).
Procedure
Mix the right levels of corn starch, oil, water, vinegar and food coloring inside a microwave safe bowl and stir until uniform. Put the bowl within the microwave as well as heat before the mixture turns gel like. Disseminate the mix around the aluminum foil to some uniform thickness. Characterize the workability from the plastic and observe that around the data sheet. Let dry for 48 hrs. Appraise the hardness and strength from the plastic and note this around the data sheet.
Stovetop Corn Plastic
Equipment
- cooking pot ($29.99, Target)
- 1 2-burner hotplate ($34.99, Target) - Used jointly using the “Milk Plastic” group.
- liquid glycerin (8 oz for $3.47, Hobby Lobby world wide web.hobbylobby.com )
Student supply list
The scholars buy the following products and produce these to class at the time from the experiment corn, potato or tapioca starch (enough for several cps), vinegar (enough for 12 teaspoon), water (enough for 10 cps), and food coloring (optional).
Standard Recipie
The conventional recipe for Stovetop corn plastic is 1 Tbsp . corn starch, 1 teaspoon vinegar, 4 Tbsp . water, and 1 teaspoon liquid glycerin.
Component Levels
The component levels for Microwave corn plastic are corn starch (Low = 1 Tbsp ., High = 1 1/2 Tbsp .), oil (Low = 1/4 teaspoon, High = 1/2 teaspoon), water (Low = 4 Tbsp ., High = 5 Tbsp .), and vinegar (Low = 1/2 teaspoon, High = 1 teaspoon).The component levels for Stovetop corn plastic are corn starch (1 Tbsp ., 1 1/2 Tbsp .), vinegar (1 teaspoon, 1 1/2 teaspoon), water (4 Tbsp ., 5 Tbsp .), and liquid glycerin (1 teaspoon. 2 teaspoon.).
Procedure
Add some corn starch, vinegar, water, glycerin and food coloring inside a cooking pot and blend the components until uniform. Heat the mix and stir continuously. Switch off heat once the mixture becomes translucent and gel like. When it's obvious and just like a gel to control your emotions. Disseminate the mix around the aluminum foil to some uniform thickness. Characterize the workability from the plastic and observe that around the data sheet. Let dry for 48 hrs. Appraise the hardness and strength from the plastic and note this around the data sheet.
