Done By :Al-Ebdaa Group School Name :Al-Shamal Independent Secondary school for Girls Module Polymers: 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. “ Desalination ” :“ Desalination by using polyurethane acrylate sodium “

1. AL-Bairaq
I am discovering materials
8th cycle
polymer
Al-Ebdaa Group :
•Gahad Mosad
•Hamda Alkubaisi.
•Noura Alkubaisi.
•Alreem Alrashdi.

2. Outline:
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 polymers
FDielmsisg n. project (humidity sensor)
Product Idea : Desalination

3. *Introduction

4. *Introduction
Polymers :
A large molecule made up of chains
or rings of linked monomer units.
Polymers usually have high melting
and boiling points .

5. Activity 1:changing polymer
pellets.
procedure, Data and observations :/ Part 1
1 - Writing the Data 2-Sort tools.
3- Prepare two 0.5 g of
polymer. (polyacylamide)
5- add 10 ml of
4- weight the samples water in two dish. 6- wait for 10
min .
7- weight the
samples after 10
min .

6. Activity 1:changing polymer
*Results pellets.
Part 2
1- The same sample . 2- Add 10 ml water to
sample A , 10 ml salt
water to sample B
3- wait for 10
min .
4 - weight the
samples after 10
min .
Sample “A” absorb the water
“swell”
Sample “B” release the water “
shrink”
Conclusion;

7. Activity 2:Hunting for polymer products .
Polymer consists of two parts :
polymers
syntheti Natural
c

8. Activity 2:Hunting for polymer
products . Natural
wood starch silk cotton
synthetic
plastic NYLON polyester Polyethylene POLLYAMIDE

9. Activity 3 : comparing the viscosity of liquids .
* The viscosity : is the resistance of a liquid to flow .
example
Imagine a Styrofoam cup with a hole in the bottom. If I then
pour honey into the cup I will find that the cup drains very
slowly.
* Conclusion:
The relationship is Proportional between
Molecular Weight and Viscosity .

10. Activity 3 : comparing the viscosity of liquids .
The viscosity of a fluid is a measure of its resistance
to gradual deformation by shear stress or tensile
stress.

11. Activity 4:Testing the strength of different
polymers Films . Part “A”
2-Sort tools.
3- Solution of
poly(vinyl acetate )
1-Write the table .

12. Activity 4:Testing the strength of different
polymers Films . Part “B”
1-Write the table . 2- Use a razor blade to peel off films
3-Individual slot 4-In the end

13. Activity 4:Testing the strength of
different polymers Films .
* Conclusion:
* Whenever the solution
Time (sec)
concentration less, spilled more .
Length ( cm)

14. Design project (humidity sensor)
Assigning Prototypes for Design Project 1 :
polymer
Cocl2
dry wet
Blue Pink

15. Design project (humidity sensor)
* Conclusion:
# Cobalt chloride turns to the color blue in the
middle Dry
# Cobalt chloride turns to the color pink in the
middle wet

16. Product Idea
“ Desalination ”
“ Desalination by using polyurethane acrylate sodium “
Desalination

17. We did not get the expected form,
we did not have enough time to
experience another possibility .

18. • We chose this topic as it is important for purifying salt water in Qatar
as it is the only source for water
• We liked this topic as it is simple , small and it is easy to use and this
makes it the best solution way to purify the water of the sea .

19. مراحل تطبيق المشروع

20. Conclusions
We enjoy our Experience in
Al-Bairaq . And we learned lots of
thing in this experience .

21. and we want to thank :
Acknowledgement: Thanks to UNESCO, Ras Gas, Shell, Center
for Advanced Materials and Qatar University.