Birefringence of Etired Poly (Vinyl Alcohol) (PVA) Foils

作者：Nechifor Cristina Delia^*; Angheluta Ecaterina; Dorohoi Dana Ortansa

来源：Materiale Plastice, 2010, 47(2): 164-166.

• birefringence
• Babinet Compensator
• stretching degree

Thin foils of poly (vinyl alcohol) (PVA) with different thickness were prepared and dried without modifying their separation surfaces. The induced by stretching under heating birefringence of PVA films was measured under with a Babinet Compensator. An increase of birefringence versus the stretching degree of the PVA foils was evidenced for all studied samples. The dependence of the birefringence on the films thickness was evidenced in this paper.

• 出版日期2010-6