Done by : bayan_Geniuses8 Group School: Bayan Independent Sec. 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. This project: Use conductive wool to conduct electricity that are different from the fundamental materials that are often used in making wires. Also, we use anther materials in insulating wires to improve the efficiency of the wires and reduce the electrical fires

1. Al-Bayan Geniuses
Maryam al-quradaghi Eman kamal Geddawy
Merna El-sherbiny Fatima Abdullah Al-ali

2. Outline
• Introduction
• Activity 1: changing polymers 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)

3. Introduction
What is the polymer ?????
The Polymer is a large molecules composed of
many repeated subunits , called Monomers.
Polymer
Monomer

4. Activity 1: Changing
Polymers Pellets
 Objectives :
Observe what is going to happen to the Soil Moist
Polymer when adding the regular and salt water.

5. Activity 1: Changing
Polymers Pellets
 Procedure:
1- we added 0.5
sample of the
Polymer pellets
2-We added 10 ml.
of water and leave
it 10 min. , then we
record our
observation.
3-We measured
the mass of
each sample.
4-We Added 10 ml.
of plain water to
beaker A and 10ml.
Of salt water in
beaker B.
5- Finally we recorded
our observation and
then we measured the
mass of polymer in
each beaker.

6. Activity 1: Changing
Polymers Pellets
Before the
experiment
Add 10 ml of
plain water
Add plain water
to A , add salt
water to B
Baker A
(plain
water)
0.52 g 6.7 g 12.6 g
Baker B
(salt water
)
0.53 g 6.73 g 5.9 g
Results :
Conclusion :
• The Soil Moist Polymer
(Polycrylamide) is a polymer that
absorbs water due to the factor
of polarization.
• The Soil Moist Polymer shrink when
the salt water was added because

7. Activity 2: Hunting for Polymer
Natural Polymers Synthetic polymers
Polyethylene
polystyrene
polyurethane
Keratin
silk
leather
cotton
wool
plastic
Nylon
Products

8. Activity 3: Comparing the Viscosity of Liquids
• Viscosity :
The measure of the fluid resistance.
• Objectives :
Know the relation between the
molecular weight and viscosity .

9. Activity 3: Comparing the Viscosity
of Liquids
1. examine the liquids in each vial
2. Turn over each one of the
liquids ,
observe the viscosity by the
speed of the bubbles .
Procedure :
Conclusion :
When ever the molecular weight increase the
viscosity increase.

10. Activity 4: Testing the Strength
of Different Polymer Films
What is the polymer film ???
A polymer film is a thin layer of chains .
Objective :
1. Know the relationship between the strength
of the polymer and the molecular weight .

11. Activity 4: Testing the Strength
of Different Polymer Films
Procedure :
Part(A) : Casting the polymer film.
1. Making the film from PVAC polymer
with different molecular weight.
Part(B): Testing the polymer film strength
1. take the polymer out of the glass.
2. Observe the length of the polymer
after stretching it .

12. Activity 4: Testing the Strength
16
14
12
10
8
6
4
2
0
of Different Polymer Films
LENGTH
0
30
60
90
120
150
180
210
240
270
PVAC
10g/40 ml
PVAC 5g/40
ml
SEC
Results :

13. Activity 4: Testing the Strength
of Different Polymer Films
 Conclusion :
1. Whenever the molecular weight of the polymer
increase the strength of the film increase .
1. The less the molecular weight of the polymer the
lighter and more stretchable it becomes , because
of the less cross-linked chains (less tangles) .

14. Design Project (Designing a
Humidity Sensor)
 Objective:
To design a humidity sensor without using electricity
 Procedure:
1. Mix 5 portions of poly(vinyl acetate) with 3 portions
of CoCl2 indicator and 2 portions of butanone
solvent.

15. Design project : (Designing a
Humidity Sensor )
 Procedure:
2. Put the sensor in
front of the dryer .
3. Put the sensor
on the boiling
water.
 Results : Turn to blue Change from blue
to red
Time 4 min 30 sec

16. Design project : (Designing a
Humidity Sensor)
 Conclusion :
The humidity sensor turns to blue in the dry
weather and turns to red in the humid weather.

18. Product Idea : Conductive
Wool
 Introduction :
 During 2005-2009, there was an average of
373,900 home fires each year, resulting in an
annual average of 2,650 deaths, and $7.1 billion
in property damage.

19. Product Idea : Conductive
Wool
 Introduction:
 Electrical Fires that are caused by electrical
failure are the 4th leading causes of fires , so the
scientists are looking for better
materials(polymers) to improve the safety of the
building and reduce fires .

20. Product Idea : Conductive
Wool
 Objectives :
1. Use other materials to conduct electricity that
are different from the fundamental materials
that are often used in making wires.
2. To use anther materials in insulating wires to
improve the efficiency of the wires and reduce
the electrical fires

21. Product Idea : Conductive
Wool
 The hypothesis :
1. The wool can conduct electricity when it is
covered by ceramic fiber .
2. The ceramic fiber is more efficient than the
rubber in insulating electricity from the outer
environment .

22. Product Idea : Conductive
Materials :
1. Wool
2. Electric cell :
ZN and its solution
CU and its solution
3. Volt meter
4. Ceramic fiber
Wool

23. Product Idea : Conductive
Wool
 Procedure :
1. Prepare the electric cell
2. Replace the copper with wool .
3. Attach the volt meter to the circuit to test the
whether the wool will conduct electricity or
not.

24. Product Idea : Conductive
Wool
 Results :
 The wool was able to conduct electricity to 100 v
.
 The ceramic fiber put down the fire , but it wasn’t
the one we needed.

25. Product Idea : Conductive
Wool
Conclusion :
 The wool can conduct electricity but it need to be
covered by an insulator (High temperature
insulation wool) ceramic fiber .
 The ceramic fiber is more expensive than the
rubber , but it is more efficient in insulating
electricity .

26. Product Idea : Conductive
Wool
Recommendations:
1. We suggest to use our product in a wider range
in buildings and facilities to boost the safety of
those buildings .
2. We intent to do further studies and experiments
to improve the conductivity of the wool .
3. We could not test the insulation of the ceramic
fiber , due to lack of time , so we hope that in
the next experiments we could test the

27. Over All Conclusion
1. We live in a polymer forest , most of the things
that we encounter in our daily life are polymers
.
2. Polymers have a lot of properties that are
useful .
3. Participating in Al-Bairaq competition didn’t just
make us think outside of a box , it made us
think that the box
don’t even exist .

28. References :
 http://www.esfi.org/index.cfm/page/Fire-
Statistics/pid/12014
 http://www.nfpa.org/research/reports-and-statistics
 http://en.wikipedia.org/wiki/Hightemperature_insulatio
n_wool

29. Acknowledgment
We would like to thank AL-Bairaq team and (CAM) who
supported us during our journey in Al- Bairaq project.
Also we sincerely appreciate the inspiration; support and
guidance of Al- Bairaq team and the sponsors
: ( Unesco) , (Rasgas) , (
Maersk Oil ) , and last but not least ( Shell ) , who gave us the
chance to participate in Al- Bairaq project .