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3 PolymerMorphology - Crystalline Morphology of Polymers...

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Crystalline Morphology of Polymers Polymers are always semi-crystalline In polymers, the process of crystallization is never complete. Polymers always contain some amorphous regions and are always semi- crystalline.
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Single Crystals of Polyethylene Formed From Dilute Solution
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X-ray diffraction indicates the polymer chains are aligned perpendicular to the broad faces of the pyramids. The thickness is much less than the extended chain length so the polymer chains must be folded.
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The Unit Cell of Polyethylene is Orthorhombic .
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In the orthorhombic unit cell, the conformation of the polyethylene chain is a planar zigzag.
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