Lu Xi-ci, Luo He-zhang. STUDY ON BIREFRINGENCE OF BIAXIALLY HOT-STRETCHED ACRYLICS BY USING CONVERGENT POLARIZED LIGHT[J]. Acta Polymerica Sinica, 1980,(1):45-50.
Lu Xi-ci, Luo He-zhang. STUDY ON BIREFRINGENCE OF BIAXIALLY HOT-STRETCHED ACRYLICS BY USING CONVERGENT POLARIZED LIGHT[J]. Acta Polymerica Sinica, 1980,(1):45-50.DOI:
An experimental method and its related principle using convergent polarized light for determining the birefringence of biaxially hot-stretched acrylics were presented. The equation proposed by M. J. Kramer has been simplified by the authors. The relationships between birefringence and percentage of stretch
stretching temperatures were studied and interference patterns were examined.