Polymers
GROUP NAME :- AL-SHAHANIYA SCIENTISTS
STUDENTS :-
MUA’YAD AL-AZZAWI FARIS AL-RUWAILY
HAMAD AL-RUWAILY AHMAD AL-SH...
Outline
Introduction
• Activity 1: Changing Polymer Pellets.
• Activity 2 : Hunting for Polymer Products
• Activity 3: Com...
Introduction
 Polymers :- are substances whose molecules have
high molecular masses and are composed of a large
number of...
Activity 1 : Changing Polymer
Pellets
 Objective :
 To understand how the Polymer Pellets work
.
 Procedure :
 Sample ...
Activity 1 : Changing Polymer
Pellets
 Results :
 Sample A : absorbed water and increased in size
Sample B : released th...
Activity 2 : Hunting for polymer
products
Objective :
Make a data table that contain :
1) Name of products made of polymer...
Activity 2 : Hunting for polymer
products
 Procedure :
1) List in data table the polymer products in the
room , then desc...
Activity 2 : Hunting for polymer
products
Activity 2 : Hunting for polymer
products
 Polymers presented in two kinds : natural and
Industrial and can be found ever...
Activity 3 : Comparing the
Viscosity of Liquids
 Objective :
 To observe the effect of Molecular weight on
viscosity .
...
Activity 3 : Comparing the
Viscosity of Liquids
 Results :
Glycerol has the highest viscosity while Methanol has
the lowe...
Activity 4 : Testing the Strength of
Different Polymer Films
 Objective:
 To know which film will be the hardest, stretc...
Activity 4 : Testing the Strength of
Different Polymer Films
Results :
 Some films are weak
 Some films are strong and ...
Activity 4 : Testing the Strength of
Different Polymer Films
 Conclusion :
As the molecular weight
increases, the strengt...
Activity 5 : Design Project :
Designing a Humidity Sensor
 Objective :
 To design a humidity sensor made of a polymer
fi...
Activity 5 : Design Project :
Designing a Humidity Sensor
 The humidity sensor:
Must give response within 10 minutes , th...
Design Project : Designing a
Humidity Sensor
Product Idea
Title :- Raising the efficiency of fuel
cell by some modified polymeric
membranes
Introduction and Rationale
 A fuel cell is an electrochemical device that
converts the chemical energy into electrical
en...
 Polymer electrolyte membrane is the polymer that is
responsible for the conduction of protons, separation
of product gas...
Introduction and Rationale
 Polyethylene Sulfonation reaction
Polymer electrolyte membrane
fuel cell (PEMFC).
Hypothesis
 Some types of synthetic polymers able to Raising
the efficiency of fuel cells and increasing its
durability.
Aim of the work
 Preparation of modified polyethylene as
polymeric membrane for direct methanol fuel
cell application.
Materials and Method
 Material :- polyethylene – formaldehyde –
hydrogen peroxide – sulfuric acid.
 Method :- By direct ...
Materials and Method
Preparation step
Casting SPE to petri-dish then
drying.
Appling polymer membrane
to fuel cell
1 3
2
Model design
Results and Conclusion
 Ionic conductivity of
polyethylene improved Through
sulfonation process .
 Sulfonated polyethyle...
Recommendations
 The product can be used as solid polymer
electrolyte for direct methanol fuel cell.
 blending other pol...
Acknowledgment
We Thank all people, teachers, friends, and our
school that supported us during our journey in Al-
Bairaq p...
of 30

Polymers ,Raising the efficiency of fuel cell by adding polymeric membranes , IDM9

Done by Group : Scientists 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 : Raising the efficiency of fuel cell by using some modified polymeric membranes to increase its durability.
Published on: Mar 4, 2016
Published in: Education      
Source: www.slideshare.net


Transcripts - Polymers ,Raising the efficiency of fuel cell by adding polymeric membranes , IDM9

  • 1. Polymers GROUP NAME :- AL-SHAHANIYA SCIENTISTS STUDENTS :- MUA’YAD AL-AZZAWI FARIS AL-RUWAILY HAMAD AL-RUWAILY AHMAD AL-SHAMMARI Al-Bairaq I am discovering materials 9th cycle
  • 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 Polymer Films. • Design Project : Designing a Humidity Sensor. • Product Idea : Raising the efficiency of fuel cells by some modified polymeric membranes.
  • 3. Introduction  Polymers :- are substances whose molecules have high molecular masses and are composed of a large number of repeating units called monomers.  Monomer attached to each other through chemical process called polymerization.
  • 4. Activity 1 : Changing Polymer Pellets  Objective :  To understand how the Polymer Pellets work .  Procedure :  Sample A : in plain water .  Sample B : in saltwater .
  • 5. Activity 1 : Changing Polymer Pellets  Results :  Sample A : absorbed water and increased in size Sample B : released the water.  Hydrophilic Polymer pellets absorbed amount of water when putted in plain water and release the same amount of water when putted in the salt medium.  Conclusion :  Polymer pellets have the property of absorbing water polymer pellets released the water due to diffusion as the water travel from the high concentration (polymer pellets) to the low concentration (in salt water)
  • 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
  • 7. Activity 2 : Hunting for polymer products  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
  • 8. Activity 2 : Hunting for polymer products
  • 9. Activity 2 : Hunting for polymer products  Polymers presented in two kinds : natural and Industrial and can be found every where.  There are both naturally occurring and synthetic polymers.  Among naturally occurring polymers are proteins, starches, cellulose, and latex  synthetic polymers include nylon, polyethylene, polyester and poly vinyl acetate  Poly vinyl acetate are thermoplastic polymer , It is one of the most widely used water-dispersed resins.
  • 10. Activity 3 : Comparing the Viscosity of Liquids  Objective :  To observe the effect of Molecular weight on viscosity .  Procedure : we compared the viscosity of three liquids having different molecular weights: Methanol , Ethylene glycol , glycerol.
  • 11. Activity 3 : Comparing the Viscosity of Liquids  Results : Glycerol has the highest viscosity while Methanol has the lowest viscosity.  Conclusion : Liquids made of long Molecules (high molecular weight ) are more viscous than liquids made of short molecules ( low molecular weight) .
  • 12. Activity 4 : Testing the Strength of Different Polymer Films  Objective:  To know which film will be the hardest, stretchable and will take longer Time to Be cut .  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 .
  • 13. Activity 4 : Testing the Strength of Different Polymer Films Results :  Some films are weak  Some films are strong and stretchable.  Length of the film between the two binder clips every minute after the weight is attached over a period of 10 minutes . PVAc 5 time Length of film 0 4 10 24 (failure ) PVAc 10 time Length of film 0 5 10 32 (failure )
  • 14. Activity 4 : Testing the Strength of Different Polymer Films  Conclusion : As the molecular weight increases, the strength increases and the flexibility decreases.
  • 15. Activity 5 : Design Project : Designing a Humidity Sensor  Objective :  To design a humidity sensor made of a polymer film .  Prototypes :  Recording the materials we will use and the steps we will follow .  making of or more data tables to record results .  Testing our protypes  Following necessary safety precautions .
  • 16. Activity 5 : Design Project : Designing a Humidity Sensor  The humidity sensor: Must give response within 10 minutes , the response must be reversible. Cobalt can be used as the indicator in the sensor.  Conclusion : Thin Polymer films absorb and release water rapidly.
  • 17. Design Project : Designing a Humidity Sensor
  • 18. Product Idea Title :- Raising the efficiency of fuel cell by some modified polymeric membranes
  • 19. Introduction and Rationale  A fuel cell is an electrochemical device that converts the chemical energy into electrical energy by a process employing an electrode- electrolyte system.  The use of fuel cells into three broad areas: portable power generation, stationary power generation, and power for transportation.  Both of the high cost and durability are the some of fuel cells drawbacks.
  • 20.  Polymer electrolyte membrane is the polymer that is responsible for the conduction of protons, separation of product gases, and electrical insulation of the electrodes in fuel cells.  Polyethylene is the most effective polymer that reduce the cost and increase the durability of fuel cell through some chemical modifications. The combined chemical and physical properties of polyethylene rather than its cheapness give them significant superiority over any other polymeric material as electrolytic separators in polymer electrolyte fuel cell. Introduction and Rationale
  • 21. Introduction and Rationale  Polyethylene Sulfonation reaction
  • 22. Polymer electrolyte membrane fuel cell (PEMFC).
  • 23. Hypothesis  Some types of synthetic polymers able to Raising the efficiency of fuel cells and increasing its durability.
  • 24. Aim of the work  Preparation of modified polyethylene as polymeric membrane for direct methanol fuel cell application.
  • 25. Materials and Method  Material :- polyethylene – formaldehyde – hydrogen peroxide – sulfuric acid.  Method :- By direct blinding method polyethylene was modified using hydrogen peroxide and sulfuric acid then crosslinked using formaldehyde and then drying at 60 OC
  • 26. Materials and Method Preparation step Casting SPE to petri-dish then drying. Appling polymer membrane to fuel cell 1 3 2
  • 27. Model design
  • 28. Results and Conclusion  Ionic conductivity of polyethylene improved Through sulfonation process .  Sulfonated polyethylene as proton conductive membrane can be used to raising fuel cell efficiency and increasing durability as well as reducing the instillation cost.
  • 29. Recommendations  The product can be used as solid polymer electrolyte for direct methanol fuel cell.  blending other polymers as hydrogel can improve water uptake of membrane to best operation.  Cost-benefit of the project are low , duo to low raw materials cost and the Simpler method of preparation.
  • 30. Acknowledgment We Thank all people, teachers, friends, and our school that supported us during our journey in Al- Bairaq project. And we never forget to thank Al-Bairaq team and the sponsors who gave us the opportunity to participate in Al-Bairaq project.