research centers


Search results: Found 1

Listing 1 - 1 of 1
Sort by

Article
Influence of Molecular Weight and Concentration of Poly Vinyl Alcohol (PVA) Films on Optical Properties
تأثير الوزن الجزيئي والتركيز على الخصائص الفيزيائية لاغشية بولي فينيل الكحول

Loading...
Loading...
Abstract

In this research polyvinyl alcohol (PVA) films was prepared by casting method at room temperature, the influence of different weights (0.25 , 0.5 , 0.75 ,1 )g for different molecular weight of PVA( 14000 g/mol and 160000 g/mol) was studied . The absorption and transmission were recorded by using UV-Visible spectrophotometer and used to calculate some of optical properties investigated including: Reflectance spectra, Energy gap, Absorption coefficient, Refractive index, Extinction coefficient and Real part, imaginary part of dielectric constants. From results it can be concluded that optical characterization is increase as increasing of concentration and decreasing of molecular weight.

Listing 1 - 1 of 1
Sort by
Narrow your search

Resource type

article (1)


Language

English (1)


Year
From To Submit

2015 (1)