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SOME OPTICAL STUDIES OF POLYMER STRUCTURE THE CHANGE IN DENSITY OF LOW PRESSURE POLYETHYLEME ON STRETCHING

机译:聚合物结构的一些光学研究低压聚乙烯在拉伸过程中密度的变化

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On stretching annealed Marlex 50 polyethylene films one can observe the appearance of cross striations in approximately 45°angles and the samples become cloudy in the region of the elongation. Upon imbibition of the stretched samples with solvents of approximately the same re-fractive index as that of the polymer the cloudiness disappears.

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