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Question & Answer
Choose the Best Answer
HDPE has a more linear structure, allowing for closer packing of molecules
LDPE has more cross-linking, which weakens the material
HDPE is made from different monomers than LDPE
LDPE is always produced at higher temperatures than HDPE
Understanding the Answer
Let's break down why this is correct
HDPE chains are straight and have very few branches. Other options are incorrect because Cross‑linking is a different process that joins chains together, but LDPE does not have extra cross‑links; it has more branches; Both HDPE and LDPE come from the same monomer, ethylene, so the chemical building blocks are identical.
Key Concepts
Polymer Morphology
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Deep Dive: Polymer Morphology
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Definition
Polymer morphology refers to the study of how polymers can be structured differently, affecting their properties. For example, polyethylene can exist in high density (HDPE) or low density (LDPE) forms, with different branching patterns impacting the plastic's flexibility and strength.
Topic Definition
Polymer morphology refers to the study of how polymers can be structured differently, affecting their properties. For example, polyethylene can exist in high density (HDPE) or low density (LDPE) forms, with different branching patterns impacting the plastic's flexibility and strength.
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