Preparation and Study of Some Mechanical Properties of Polymeric Blend Films [PVA: PVP-CaCl2.2H2O]

Abstract

In the present paper, pure polymeric blend films [PVA: PVP] reinforced by CaCl2.2H2O salt have been produced with different weight ratios (10, 20, 30, 40, 50 wt %) by using the solution casting method, where the mechanical properties such as tensile, hardness, and impact were studied. The effects of weight ratio of salt on tensile characteristics of reinforced polymeric blend films have been studied, where we note the increase in the values of the tensile characteristics that are represented by Yung modulus and the maximum tensile strength (at all weight ratios) of the reinforcement by CaCl2.2H2O salt in comparison with pure polymeric blend films [PVA: PVP] reinforced by CaCl2.2H2O salt. The impact of salt weight ratio on hardness (Shore D) of polymeric blend films was studied, and the experimental results showed that the hardness increased with an increase in salt weight ratio, as well as the effect of salt weight ratio on the impact represented by fracture energy and impact strength of the reinforced polymeric blend films, where it was found that the values of the fracture energy and impact strength increased with an increase of the salt weight ratio.