Done by Group : Professors School Name : Alshahaniya Independent Secondry School for Boys. Polymers Module : Through this module, students examine the different properties of the variety of polymers. Then they design and test a humidity sensor made of a polymer film. Finally, they are asked to design their own products. the product Idea is : using Superabsorbent polymer to keep the armpit dry & prevent bad smell of sweating to appear.

2. • Introduction
• Activity 1: Changing polymer pellets
• Activity 2: Hunting for polymer products
• Activity 3: Comparing the viscosity of liquids
• Activity 4: Testing the strength of different
polymer films
• Design Project (Designing a Humidity Sensor)
• Product Idea (Superabsorbent polymer
Keeps the armpit dry.)

3. Polymer is Huge molecules that
consist of a multiple small
molecules called (monomers).

4.  Objective : Understand how Polymer pellets work.
 Procedure :
1) Prepare two samples 0.5 g of polymer pellets
2) Add 10 ml of water to each sample , then observe the
results
3) Measure the mass to each sample
4) Add 10 ml of plain water to sample A , & 10 ml of
saturated salt water to sample B , then observe the results
5) Filter leftover liquid to make samples easier to handle, by
using paper towel , then measure the mass of samples

5.  Results : Polymer absorbs water , so the mass of pellets
increased in both samples after addition of plain water
for the first time.
Sample A absorbed more water after addition of plain
water for the second time
Sample B released the water after addition of the salt
water
 Conclusion : water moves through polymer depends
on Osmosis of water ( moving of water molecules from
low salt concentration to high
salt concentration ) .

6. Activity 2
Hunting for polymer products
• Objective : Make a data table that contain :
1) Name of products made of polymers
2) Uses of products
3) Type of polymer ( natural / synthetic )
4) Name of polymer
5) Physical properties of the polymer
• Procedure :
1) List in data table the polymer products in the room , then
describe its uses
2) Determine type of polymer ( natural / synthetic ) , then
identify the polymers name
3) Describe the physical properties of the polymer
4) Compare the number of polymer products , then identify
products as being made of polymers

7. Activity 2
Hunting for polymer products
• Results :
Synthetic: natural:
1) Plastic 1) Silk
2)Fabrics 2) wool
3)Insulation 3)Papers

8.  Conclusion : Polymers ( natural or
synthetic ) are used & found in most of
products in our life .
Activity 2
Hunting for polymer products

9.  Objective : Knowing about the viscosity of liquids & the amount of
time that bubble takes to move through each liquid
 Procedure :
1) Examine the liquid of each vial , then record the observation
2) Turn over the vials , then record the time that it takes air bubble to
reach to the opposite end by using stopwatch

10.  Results : Bubble moves faster in Methanol , then
Ethylene glycol , then Glycerol have the slowest
movement
 Conclusion : Polymers with higher molecular weight
have highest Viscosity , & Polymers with lower
molecular weight have less Viscosity

11.  Objective :
 knowing the strength of different polymers films
 Procedure :
 label two microslides with the molecular
weight of one of the poly(vinyl acetete)
Solutions .
 Use the pipette to draw the appropriate
poly(vinyl acetate) solution.
 Dispense the solution from the pipette as
evenly as possible onto the unlabeled side of
one of the slides .
 Use a coin to drop a watch glass over the two
slides .

12.  Results :
PVAc 260 have the highest strength.
PVAc 100 have the lowest strength.
 Conclusion : when the molecular
weight increase the strength of the
polymer films will increase.

13.  Objective: Design a Humidity Sensor
 Procedure/prototypes :
1) Design a thin polymer film made of three
different polymers
2) The sensor must be durable
3) The sensor contain Cobalt (II) Cholride as
indicator ( blue – dry , pink – wet )
4) The sensor gives visual response within 10
min
5) The sensor have reversible response

14.  Results : Sensor number 3 that made of
polyvinyl alcohol gives the best model of
humidity sensor
 Conclusion : the best polymer that used in
humidity sensor that have less molecular
weight

15.  Introduction and Rationale:
 Some polymers have high ability to absorb water in its
spaces, so we can use Superabsorbent polymer ( SAPs )
[ Slush Powder ] to absorb sweat in armpit to keep it dry, then
we can prevent bad smell of sweating to spread.
 Aim of the work (objectives)
 using Superabsorbent polymer
to Keeps the armpit dry & prevent
bad smell of sweating to appear.

16.  Hypothesis :
 Superabsorbent polymer can absorb sweat & Keeps the
armpit dry.

17.  Product Story :
Through working with Al-Bairaq team we
learned a lot about polymers, specially
that some polymers have ability to absorb
water, & be gel-like shape.
So we think about using sticks that prevent
bad smell of sweating to appear in
armpit, specially people who has
Sweating problem.

18.  Materials & Methods :
1) Superabsorbent polymer (Slush Powder)
2) Cotton
3) Cotton Sacs
Put Superabsorbent polymer in thin
sacs that contain cotton , that be permeable to
sweat to be absorbed.

19.  Results:
 Professors stick prevent bad smell of
sweating to appear.
This is the first stick that use, so its efficient for
peoples have high sweating secretion.

20.  Recommendations :
We recommend pharmaceutical factories
to use & develop our product.
Cost-benefit of the project are high,
because peoples need to find an efficient
solution for bad sweating smell.

21.  Conclusion :
Using of Professors stick prevent bad smell of
sweating to appear
We get high experience by participate with
Al-Bairaq competitions.

22.  Many thanks to my teacher : Mr.
Mohammad Jebril, Al-Shahaniyah school,
AL-Bairaq team from Center for
Advanced Materials (CAM), Qatar
University for supporting us during our
journey with AL-Bairaq.
 Also, I would like to thank the sponsors
UNESCO, Qatar National Commission,
Ras Gas, Maersk and Shell.