Abstract
Crystallization under controlled shear conditions has been optically monitored for a series of sharp molecular weight fractions of poly(ethylene oxide). The minimum shear rate (MSR) necessary to produce oriented crystalline morphologies exhibited a strong molecular weight (M) dependence: MSR=K/M1.47. The time necessary for erasure of orientation effects after crystal melting was also determined and found to be proportional to M1.42.
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