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Three-dimensional crystalline order in an atactic comblike polymer

✍ Scribed by Lupinacci, Domenico ;Winter, W. T.

Book ID
105334161
Publisher
Wiley (John Wiley & Sons)
Year
1982
Tongue
English
Weight
462 KB
Volume
20
Category
Article
ISSN
0098-1273

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✦ Synopsis

Abstract

The production of oriented β€œcrystalline” fibers of an atactic polymer, poly{1‐[6‐(4‐biphenylyloxy)hexyloxycarbonyl]ethylene} is reported. The x‐ray diffraction is consistent with a two‐chain unit cell with a = b = 23.5 Γ…, c = 6.48 Γ…, and Ξ³ = 120. Although the cell is essentially hexagonal, the absence of screw symmetry along the polymer chain reduces the crystal symmetry to P A packing model consistent with these data is proposed.

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Three dimensional ordering in liquid cry
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The kinetics of three dimensional ordering from the mesophase and from the isotropic state have been studied for poly(alkyl-4,4'-diphenoxy terephthalate)s with penta-, hexa-and hepta-methylenic spacers, using differential scanning calorimetry. The rates of transformation from the mesophase have been