Refractive index of corona-treated polypropylene films

被引：9

作者：

Yovcheva, T. ^{[1
]}

Babeva, Tz ^{[2
]}

Nikolova, K. ^{[3
]}

Mekishev, G. ^{[1
]}

机构：

[1] Paisij Hilendarski Univ Plovdiv, Dept Expt Phys, BG-4000 Plovdiv, Bulgaria

[2] Bulgarian Acad Sci, Cent Lab Photoproc, BG-1113 Sofia, Bulgaria

[3] Univ Food Technol, BG-4002 Plovdiv, Bulgaria

来源：

JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS | 2008年 / 10卷 / 05期

关键词：

corona discharge; poly(propylene); refractive index; thin films; transmittance spectra;

D O I：

10.1088/1464-4258/10/5/055008

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The samples under investigation are 20 mu m thick isotactic polypropylene films corona treated at different corona polarities and grid voltages in a three-electrode system. In order to control the results of the applied treatment a combination of two refractive index (RI) measuring techniques (laser refractometry and spectrophotometry) is used to study RI dispersion in the spectral range 400-1000 nm. It is found that the surface RI was lower than the volume RI. After a corona treatment both surface and volume RI increase. The changes of the volume RI as compared to surface values are more influenced by the corona treatment conditions: the greater the grid potential, the bigger the volume RI.

引用

页数：4

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