Deterioration the Properties of Contaminated Natural Rubber with Some Species of Microorganisms.

Nabel Kadum Abd-Ali


The rubber materials are very important in our lives because of its properties and suitability for many applications, and it is a direct target of numerous microorganisms such as bacteria and fungi and there effect on rubber, especially natural rubber poly (cis-1,4-isoprene), as it contains organic material and water, it dealt with the current study. The effect of contaminate (fungi) during bad conditions of transportation and Storage, genus Aspergillus Niger was isolated from contaminated samples for both types (SMR20, SVR20) and study the physical and mechanical properties, which included tensile strength and elongation at break, hardness, abrasion and extraction in addition to the study influenced main constituent of natural rubber growth of fungus using the technique of infrared spectrum. The results showed a negative influence on the physical and mechanical properties for the growth of fungus, in addition to the disappearance of some bands of natural rubber such as   (C-H) and (C-N) bands.

Keywords: Deterioration, Natural Rubber, SMR20, SVR20, poly (cis-1,4-isoprene), microorganisms, fungi.

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ISSN (Paper)2224-6096 ISSN (Online)2225-0581

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