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OPTICAL CHARACTERISTICS OF BIOPOLYMER FILMS FROM PECTIN AND GELATIN

K. Nikolova1,* , I. Panchev1, S. Sainov2

Affiliation

  1. Department of Physics, University of Food Technologies, 4002 Plovdiv, 26 Maritza Blvd., Bulgaria
  2. Central Laboratory of Optical Storage and Processing of Information, BAS, Acad. G. Bonchev Str., bl. 101, 1113-Sofia, Bulgaria

Abstract

Biopolymer films from pectin with different degree of esterification and gelatin have been investigated. Data the effect of film thickness upon the spectral and refractometric film characteristics with different weight contents have been obtained. A comparative analysis of pectin films with a gelatin film has been carried out. The refractometric data are made for liquid phases with 1, 0.5 and 0.25 % at 633 and 790 nm, using He-Ne and semiconductor lasers. On the base of the measured refractive index the Sellmeier,s relation is obtained..

Keywords

Refraction index, Refractometry, Optical characteristics, Biopolymer, Pectin, Gelatin.

Submitted at: April 12, 2005
Accepted at: May 26, 2005

Citation

K. Nikolova, I. Panchev, S. Sainov, OPTICAL CHARACTERISTICS OF BIOPOLYMER FILMS FROM PECTIN AND GELATIN, Journal of Optoelectronics and Advanced Materials Vol. 7, Iss. 3, pp. 1439-1444 (2005)