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Citation: YANG ZAN-XI, CHIEN JEN-YUAN. ON THE 1157 AND 973 CM-1 ABSORPTION BANDS OF POLYPROPYLENE[J]. Acta Polymerica Sinica, ;1965, 7(1): 69-73. shu

ON THE 1157 AND 973 CM-1 ABSORPTION BANDS OF POLYPROPYLENE

Received Date: 17 June 1964

From the comparison of the infrared spectra of a large number of branched normal and alkanes, the authors found that the 1157 cm-1 band is a characteristic absorption for the structure while the 973 cm-1 band is characteristic for thestructure (or H). Consequently, it appears questionable toconsider these two absorption bands as the spiral conformation of isotactic polypropylene chain. Further studies are needed to clarify this point.
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