Chem-_Diaper_Dissection - Diaper Dissection Abstract In...

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Diaper Dissection Abstract: In this lab, we are going to investigate how chemicals are used in everyday disposable diapers. We will learn by dissecting a diaper and testing the chemicals found in it. In this activity, you will isolate the super absorbent polymer in a disposable diaper and we will study how this polymer interacts with water. Objective: The purpose is to understand what is in disposable diapers that keep babies dry. Question: How are polymers used to keep a baby dry? What substances do diapers contain that makes them successful in their purpose? Materials: Eye protection Thin (“ultra”) disposable diaper Scissors Plastic grocery bag 3 beakers water table salt sugar calcium chloride Procedure: Part A 1) Cut a 2cm by 2cm sample of each of the following components: a) outer back sheet b) inside top sheet (surface that touches the baby’s skin) c) adhesive tape d) elastic material around leg cuffs e) fluffy filling 2) Cut down the centre of the inside surface and remove the fluffy filling and place it in a plastic grocery bag. (Some diapers have a cotton layer that can be split down the middle. Try to peel apart the cotton layer in the middle, because that is where a lot of the poly absorb crystals are) 3) Pull the filling apart into smaller pieces and tie a knot to close the plastic grocery bag. 4) Shake the bag to dislodge the absorbent crystals within 5) Open the plastic grocery bag, and tilt the bag to collect the dislodged crystals in the corner of the bag. 6) Cut a small hole in that corner, and empty the crystals into a beaker. 7) Add 100mL of water to the crystals
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8) After a couple of minutes, divide the material formed into 3 cups with equal portions in each. 9) Label the beakers, Beaker A, Beaker B, and Beaker C. 10) In beaker A, add 2mL of table salt 11) In beaker B, add 2mL of sugar 12) In beaker C, add 2mL of calcium chloride Part B 1) Take two different brands of diapers, for example, Huggies or Pampers. Follow steps 2-7 in part A. Continue to add water to the absorbent crystals and see which brand can hold the most amount of water. Observations:
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This note was uploaded on 02/20/2009 for the course CHEM 120 taught by Professor Gilbert during the Fall '08 term at Waterloo.

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Chem-_Diaper_Dissection - Diaper Dissection Abstract In...

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