Dislocation Networks in Folded-Chain Polyethylene Crystals

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Science  12 Mar 1965:
Vol. 147, Issue 3663, pp. 1296-1297
DOI: 10.1126/science.147.3663.1296


Interaction between the fold surfaces of polymer crystals can be strong enough to concentrate any mismatch in orientation into a network of dislocations. Direct observation of these networks by diffraction contrast electron microscopy yields strong evidence in favor of polymer crystallization by a regular chain-folding mechanism.