Polymers 1a3m65

Made by: Himalay sahu

PLASTIC

FIBER

ELASTOMER

objectives 

By the end of the class, students should be able To explain the importance of proper disposal of synthetic polymers To suggest ways to dispose of synthetic polymers in order to preserve the environment To practice good habits in disposing of synthetic polymers

What is Polymer ?!

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Food? Bag? Animal? Plant? Cloth?

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Or what?

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POLYMERS large molecules made up of many smaller and identical repeating units -> monomers  These repeating units s together by covalent bonds 

POLYMERS 

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The chemical process that the monomers together - POLYMERISATION Polymerisation can be divided into 2 types :  addition polymerisation  condensation polymerisation

POLYMERS 

Polymers can be divided into 2 types :  naturally occurring polymers  synthetic polymers

naturally occurring polymers 

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Polymers that exist in plants or animals Types of naturally occurring polymers  protein : muscles  carbohydrates : cellulose  natural rubber : latex

synthetic polymers  Polymers

made in industry from chemical substances

 Scientists

are able to copy structures of natural polymers to produce synthetic polymers trough scientific research

synthetic polymers  many

of raw materials for synthetic polymers are obtain from -> petroleum  types of synthetic polymers  plastics  fibers  elastomers

plastics  composed

of polymers of carbon and hydrogen alone or with oxygen, nitrogen, chlorine or sulfur in the backbone

plastics  Properties

    

of plastics :-

Light strong malleable inert to chemical insulators of electricity and heat

plastics 

example of plastics are :     

polythene (polyethylene) polyvinylchloride (PVC) polypropene (polypropylene) polystyrene Perspex Bakelite

fibers  long

chain polymers that withstand stretching  example of fibers are :polyamide nylon, terylene phenol-formaldehyde (PF) acrylic polymers

elastomers  polymer

that can regain its original shape after being stretched or pressed  example of elastomers are :Styrene-butadiene rubber(SBR) Polyisoprene (IR) Polybutadiene (BR) Chloroprene Rubber (CR)

What is the impacts of synthetic polymers towards human and environment?

Environmental pollution !!! 

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Most of the polymers are nonbiogradeable Cannot be decomposed by bacteria / decomposer So… caused disposal problem when polymer not decay

Environmental pollution !!!

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Plastics items discarded Blockage of drainage systems & rivers So… caused flash floods

Environmental pollution !!! 

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Polymer containers not buried in the ground Become breeding ground for mosquitoes So… caused diseases such as dengue

Environmental pollution !!! 

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The non-biogradeable polymers thrown into rivers -> lakes -> seas Swallowed by aquatic animals Animals die due to chocking

That’s not the only impacts of plastics

Ways to dispose synthetic polymer properly 

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PYROLISIS-burn without oxygen INCINERATION-gas is filtered INVENT A BIODEGRADEABLE SYNTHETIC POLYMER

CATEGORY

Code

Example

DENSITY

1

PETE

Pop bottle Peanut butter jar Mylar

1.38 – 1.39

2

HDPE

Milk jug Shampoo bottle

0.95 – 0.97

3

V

4

LDPE

Trash bags Diaper liners

0.92 – 0.94

5

PP

Indoor/outdoor carpeting, kitchenware

0.90 – 0.91

6

PS

Styrofoam Pen casing Clear plastic cups

1.05 – 1.07

7

OTHER

Toothpaste and cosmetic containers

Pipes and fittings, pill bottles, shower curtains, garden hoses, tile, leather like luggage and upholstery

1.15 – 1.35

PRACTISING GOOD HABITS IN DISPOSING OF SYNTHETIC POLYMERS 1.

Separate the synthetic polymers from other wastes.

2.

Recycle

3.

Reuse

3) State environmental disaster occurs due to improper disposal of plastics. Flash flood acid rain

Conclusions:There are ways to dispose synthetic polymers: a) pyrolisis b) inceneration c) use biodegradable synthetic polymers

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Good habits in disposing of synthetic polymers: a) recycle b) reuse c) separate synthetic polymers from the other wastes

THANK YOU….!!!