Juniper Publishers Journal of Polymer science

   JUNIPER PUBLISHERS-   ACADEMIC JOURNAL OF POLYMER SCIENCE Abstract The purpose of this study was to evaluate the effect of adding various concentrations of castor oil (2% and 4% v/v) on the properties of edible films based on carboxymethyl cellulose (CMC). Moisture content, water solubility, tensile strength, elongation at break, elastic modulus, water vapor permeability, optical and thermal properties and antioxidant activity of the films were examined. The results demonstrated that the presence of castor oil led to a decrease in moisture content, water solubility and mechanical strength of the films. The film containing 4% of oil showed the highest water vapor permeability. The optical properties measurement represented that all of the samples were transparent. By the addition of castor oil, the antioxidant activity of the films improved largely. Thermal properties of the samples had also been investigated and it was determined that the effect of castor oil on the me...

   JUNIPER PUBLISHERS-   ACADEMIC JOURNAL OF POLYMER SCIENCE Abstract The viscosity and structure properties of CaO-MgO-SiO 2 -Al 2 O 3 -TiO 2 -FeO-Cr 2 O 3  system are investigated to illuminate the melt properties of Cr 2 O 3 -bearing BF vanadium slag. The viscosity decreases to 1.5 Pa·s at the temperature above 1565 K for the CaO-MgO-SiO 2 -Al 2 O 3 -TiO 2  system, the polymerization degree is low due to the main structures of silicate and as monomer. With the introduction of 1.5 wt% Cr 2 O 3  and 5 wt% FeO into CaO-MgO-SiO 2 -Al 2 O 3 -TiO 2  system, the viscosity significantly increases and decreases to 1.5 Pa·s until temperature beyond 1640 K due to that part of the chromium forms spinels, and the polymerization degree is drastically enhanced. With further increasing 10 wt% FeO into the CaO-MgO-SiO 2 -Al 2 O 3 -TiO 2 -1.5wt% Cr 2 O 3  system, the viscosity decreases and is 1.5 Pa·s at about 1620 K, the polymerization degree deceases and spin...