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This paper displays the effect of glutaraldehyde (GA) as a crosslinking agent with different weight ratios (5,8 and 10%) on the mechanical properties (elongation at break and tensile strength) of polyvinyl alcohol/starch & polyvinyl alcohol / polyethylene glycol blend. Solution casting technique was used to prepare (75%PVA/25%corn starch), and (75% PVA/25% PEG) blend films. The results confirmed that when the increased concentration of GA, the tensile strength increased, while elongation at break decreased for both two blends. This study offers the groundwork for applications of this hydrogel membrane in a drug release system.

This research deals with the study of the effect of adding glass powder of grain size (35μm) with different volume fraction (10%, 20%) to the blend of unsaturated polyester and polyurethane using hand lay-up method, after preparing the matrix from weight fraction (90%) of Unsaturated polyester and (10%) of polyurethane. The results have shown that the addition of particles to the polymer blends lead a great extent in mechanical properties, since testing bending, Shore D hardness and impact strength. It has shown that the values of young modulus, impact strength and hardness were increased with increasing of volume fraction of glass powder. Fracture surface of the samples were examined by using optical microscope with magnification (40 X) and the results showed that the nature of fracture is seems brittle fracture for all samples.

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Banana fiber at present is a waste product of banana cultivation. Moreover, without any additional cost input.This study was carried out to investigate the effect of pseudo-stem banana fibers in the woven fabric configuration on the mechanical properties of unsaturated polyester composite. It was found that the addition of pseudo-stem banana woven fabric increased in the impact, compression, and flexural strength. The results showed that the impact strength on the pseudo-stem banana woven fabric reinforced (UP) composite is increased by 22% compared to virgin (UP), while flexural and compression strength on the composite is increased by 15% and 12% respectively.