PKSC 2020: Polymer Formation Exam
1. polymers classification: thermoset, thermoplastics, and elastomers
2. Thermoset polymers: polymer when heated up, can't be reshaped
-hard, brittle plastic
3. Thermoplastic polymer: -polymer when heated up, can be melted and reshaped repeatedly
-soft plastic
4. Elastomers: -polymer that is soft at room temperature
-cant be melted or dissolved
5. Semi-crystalline thermoplastic: thermoplastic with an ordered polymer chain structure
hazy looking plastic
6. Amorphous thermoplastic: thermoplastic that has an unorderly polymer chain structure
-transparent
7. Plastic classifications: commodity, engineered, and specialty
8. commodity plastics: -plastic used in high volume due to low cost and reusable performance
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, 9. engineering plastics: plastic used for specific scenarios, maintains mechanical properties above 100 deg
C
10. Specialty plastics: relatively high cost plastic used for its unique properties
11. Polyolefins: class of polymer made of hydrocarbon
12. homopolymers: polymer made of the same monomer
13. copolymer: a polymer made of two or more different types of monomers
-alternating, block, graft, random type
14. Monomer: -A carbon based compound joining together to form polymers
-byproduct of fracking and cracking crude oil and natural gas
15. key monomers of packaging: ethylene, propylene, styrene, and vinyl chloride
16. ethylene: monomer produced by cracking ethane gas
CH2=CH2
17. propylene: monomer produced by cracking ethane, butane, or naptha fraction of petroleum
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1. polymers classification: thermoset, thermoplastics, and elastomers
2. Thermoset polymers: polymer when heated up, can't be reshaped
-hard, brittle plastic
3. Thermoplastic polymer: -polymer when heated up, can be melted and reshaped repeatedly
-soft plastic
4. Elastomers: -polymer that is soft at room temperature
-cant be melted or dissolved
5. Semi-crystalline thermoplastic: thermoplastic with an ordered polymer chain structure
hazy looking plastic
6. Amorphous thermoplastic: thermoplastic that has an unorderly polymer chain structure
-transparent
7. Plastic classifications: commodity, engineered, and specialty
8. commodity plastics: -plastic used in high volume due to low cost and reusable performance
1/4
, 9. engineering plastics: plastic used for specific scenarios, maintains mechanical properties above 100 deg
C
10. Specialty plastics: relatively high cost plastic used for its unique properties
11. Polyolefins: class of polymer made of hydrocarbon
12. homopolymers: polymer made of the same monomer
13. copolymer: a polymer made of two or more different types of monomers
-alternating, block, graft, random type
14. Monomer: -A carbon based compound joining together to form polymers
-byproduct of fracking and cracking crude oil and natural gas
15. key monomers of packaging: ethylene, propylene, styrene, and vinyl chloride
16. ethylene: monomer produced by cracking ethane gas
CH2=CH2
17. propylene: monomer produced by cracking ethane, butane, or naptha fraction of petroleum
2/4
