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What is the structural difference between LDPE or low-density poly(ethene) and HDPE or high-density poly(ethene)? - Leaving Cert Chemistry - Question B - 2012

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What is the structural difference between LDPE or low-density poly(ethene) and HDPE or high-density poly(ethene)?

Worked Solution & Example Answer:What is the structural difference between LDPE or low-density poly(ethene) and HDPE or high-density poly(ethene)? - Leaving Cert Chemistry - Question B - 2012

Step 1

LDPE or low-density poly(ethene)

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Answer

Low-density poly(ethene) (LDPE) consists of heavily branched carbon chains. The extensive branching in its molecular structure results in a lower density and less crystalline nature, which contributes to its flexibility and ductility.

Step 2

HDPE or high-density poly(ethene)

99%

104 rated

Answer

High-density poly(ethene) (HDPE), on the other hand, has a more linear structure with minimal branching. This structure leads to a higher density and more crystalline arrangement, enhancing its strength and rigidity compared to LDPE.

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