Done by Talent group at Qatar Secondary school for Girls, Under supervision from AL-Bairaq

1. I AM DISCOVERING MATERIALS
Talent
Khloud Fatma
Maryam Daniya

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
– Part A: Casting and Observing Polymer Films
– Part B : Testing the Effect of Molecular Weight
on Tensile Strength
• Design Project: Designing a medicine release capsule
• Product Idea: Polymer Biomaterial Advances Wound
and Burn Healing

3. Polymers are made up of many many molecules all strung together to
form really long chains (and sometimes more complicated structures,
What makes polymers so fun is that how they act depends on what
kinds of molecules they're made up of and how they're put together.
The properties of anything made out of polymers really reflect what's
going on at the ultra-tiny (molecular) level. So, things that are made of
polymers look, feel, and act depending on how their atoms and
molecules are connected, as well as which ones we use to begin with!
Some are rubbery, like a bouncy ball, some are sticky and gooey, and
some are hard and tough.

4. Add 10ml of pure
water of beakers(1)
add water to the other
beaker(2) at the same
time .
Wait 10 mins.
Then get the
mass of the
polymer again
Beaker
(1)
Beaker
(2)
Mass after
adding pure
water
9 g 9 g
Mass after
adding pure
water again
21 g -
Mass after
adding salt
water
- 7 g
Wait 10 mins.
Then take it
out and get the
mass of the
polymer
Add 10ml of pure
one only water of
beakers(1) , add
salty water to the
other beaker(2) at
the same time .

5. After doing this activity we noticed that polymers can
expanded up to 200 times when it stays in water
Polymers shrink when it stay in salty in salty in salty
water(diffusion)
Conclusion

6. natural polymer Synthetic
polymer
DNA wood plastic nylon

7. Viscosity is the
resistance of liquid of
flow.
The more viscous a
liquid is ,the longer it
takes to flow.
Liquid Chemical Structure Viscosity
Methanol CH3OH Low
Ethylene
glycol
HOCH2CH2OH Medium
Glycerol HOCH2CH(OH)CH2OH High

8. Procedure:
Spreading PVAC polymer solutions
with the same concentration but
different molecular weights
100,000 and 160,000 and 270,000
MW

9.  Procedure:
 After leaving polymer films for 2
days, we scratched them out to
apply strength and stretch
ability tests

10. Time Pvac
100,00
Pvac
170,00
Pvac
260,000
0 min 6 5 5
1 min 10 11.1 9
2 min 12.5 14.5 12.2
3 min 14.7 16.9 14.8
4 min 17 18.8 15.9
5 min 19.2 20.6 17.4
6 min 20.8 21.4 18.6
7 min 22.4 23.3 19.4
8 min 24.2 23.5 20.4
9 min 25.3 23.9 20.7
10 min 25.5 25.6 21.5

11. A HUMIDITY
Then we put in the mixerFIRST we add to
the beaker
Polymer Poly
(vinyl acetate)
MW 270,000
6
indicator 3
Solvent 1

12. Results:
We dried the polymer under the
hair dryer; it turned blue then we
exposed it to water vapor it
turned into transparency
Conclusion:
We were successful to make a
humidity sensor which is
reversible

13. FINAL PROJECT:
TITLE: POLYMER BIOMATERIAL ADVANCES
WOUND AND BURN HEALING
 Bandages are great for standard cuts and scrapes. however, when
you get a cut in an area that’s not so easy to bandage-for example
between your fingers or toes-finding a bandage that will stay in place
to protect the wound is serious business. New solutions require
medical device testing. We made a solution to this problem as we
created a new kind of bandage.
 We want to make it easier for people who get cuts and scrapes in
weird places and prevent the cuts from making any marks on them

14. POLYMER BIOMATERIAL
ADVANCES WOUND AND BURN
HEALING
AIM OF THE WORK
 To improve this world even in the smallest of the things to a
better future.
 To make a plaster that doesn't make marks nor hurts the person
who is using it.
 Make better products to improve our hospitals.

15. POLYMER BIOMATERIAL ADVANCES
WOUND AND BURN HEALING
MATERIALS
 Polyester is a category of polymers that contain the ester functional
group in their main chain. As a specific material, it most commonly
refers to a type called polyethylene terephthalate (PET). Polyesters
include naturally occurring chemicals, such as in the cut in of plant
cuticles, as well as synthetics through step-growth polymerization such
as polybutyrate. Natural polyesters and a few synthetic ones are
biodegradable, but most synthetic polyesters are not.

16. POLYMER BIOMATERIAL ADVANCES
WOUND AND BURN HEALING
MATERIALS
 poly-L-lactic acid (PLLA) based injectable medical device for restoration and/or
correction of the signs of facial fat loss in people with human immunodeficiency virus. As
a result, the properties of the PLLA microparticles have received considerable interest
from the medical community. Polylactides have a long-standing history of safe use in
medical applications, such as screws, intra-bone and soft-tissue implants, and as vectors
for sustained release of bioactive compounds. The L-isomer of polylactic acid is a
biodegradable, biocompatible, biologically inert, synthetic polymer. Putatively, PLLA
microparticles initiate nucleogenesis as a result of a normal foreign-body reaction to their
presence. The build-up of collagen over time creates volume at the site of injection.

17. POLYMER BIOMATERIAL
ADVANCES WOUND AND BURN
HEALING
METHOD
 The PLLA is placed into a test tube with water and spun,
disrupting the sheets and creating smaller pieces. The liquid and
fibre are then poured out onto a flat surface where the fibres
overlap and dry to form a thin nanosheet of material. The
material’s ability to coat small and difficult contours was tested by
dipping into the preparation irregularly shaped objects such as a
needle and the digits from a mouse paw. The nanosheet covered
each of the objects extensively, including the bends and wrinkles
of the mouse digits. The material dried and stayed in place,
keeping bacteria out.

18. POLYMER BIOMATERIAL
ADVANCES WOUND AND BURN
HEALING
RESULTS:
 The new design uses ultra-thin, transparent, sticky,
and extraordinarily flexible nanosheets made of the
biodegradable polyester poly-L-lactic acid (PLLA). The
thin coating clings to bends and wrinkles in the skin
while still adhering to flat and broad surfaces. It does
this without the addition of adhesives, making it an
ideal bandage for any type of wound.

19. POLYMER BIOMATERIAL
ADVANCES WOUND AND BURN
HEALING
RECOMMENDATIONS:
 This discovery can change the way burn victims are cared for in
hospitals and make a difference in the healing process.

20. CONCLUSIONS:
Thanks to the wonderful world of polymers,
in the future those annoying cuts in hard-
to-cover places or a burn from the grill will
be covered completely, and nasty bacteria
will be kept out.

21. Many thanks to AL-Bairaq team from Center for
Advanced Materials (CAM), Qatar University for
supporting us during our journey with a AL-Bairaq.
Also, I would like to thank the sponsors UNESCO,
Qatar National Commission and Shell.