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Polarized Raman spectroscopy and birefringence measurements on a wide range of as-spun poly(ethylene terephthalate (PET) and poly(ethylene 2,6-naphthalenedicarboxylate) (PEN) fibres have been correlated. Evidence is provided for the linear relationship between birefringence and molecular orientation. An intrinsic birefringence value of 0.244 is obtained for PET and a value of 0.487 for PEN.

Посилання на статтю:

The relation between molecular orientation and birefringence in PET and PEN fibres / R. A. Huijts* and S. M. Peters // Polymer. – 1994. – Vol 35. – P. 3119-3121.

The relation between molecular orientation and birefringence in PET and PEN fibres - Завантажити.