Polymer Properties

The size of the spherulite in semi-crystalline polymers are influenced by following factors..

• Crystallization temperature

• Crystallization time

• Processing history

• Structure of the polymer

Which of the following monomers can produce semi-crystalline polymer?

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Glass transition temperature is caused by ---------------- movement of polymeric chain.

The above image shows Polymer a and Polymer b. Choose the correct statement about these polymers.

• Polymer A has higher density compared to Polymer B

• Polymer B will exhibit higher melting temperature compared to Polymer A

• Polymer B is more transparent than Polymer A

• Polymer B has higher impact properties compared to polymer A

Both amorphous and semi-crystalline polymers will become ------------------- liquid when melted.

Which of these polymers will exhibit highest Tg.

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Which of the following statement is TRUE?

• As molecular weight increases crystalline region increases.

• Branching increases crystalline region in polymers.

• Large size of side group in monomers decreases crystalline region formation in polymers.

• Block co-polymers has less crystalline region compared to random co-polymers.

The Polyethylene produced from this polymerization plant will be.....

• Amorphous

• Semi-crystalline

Which of the following polymer will exhibit highest impact properties?

• LDPE

• UHMWPE

• LDPE

• HDPE

Which of the following polymer will have highest level of crystalline region?

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