Biotechnology

Download Biodamage and Biodegradation of Polymeric Materials : New by L. Elena Pekhtasheva, N. Anatoly Neverov, E. Gennady Zaikov PDF

By L. Elena Pekhtasheva, N. Anatoly Neverov, E. Gennady Zaikov

The factor of biodamages includes a variety of medical and useful projects linked to safeguard of uncooked fabrics and items opposed to harm through micro organism, fungi, bugs and rodents in the course of long term garage, creation, transportation and operation. The biodegradation is used for degradation and usage of tired fabrics and articles. This learn is pressing for ecology and the fight opposed to environmental infection. The biodamage challenge is either scientifically advanced and essentially varied. Scientifically, it truly is in response to the information of fabric technological know-how, biology and chemistry.

The first aim of this booklet is to supply certain details at the 3 interrelated components: micro organism and fungi (the resource of biodamages); bugs and rodents (materials and items depredators); and fabrics and items broken via residing organisms. the main sleek facts on morphology and body structure of biodegrading microorganisms are awarded. the second one aim of this ebook is to supply the reader with a systematisation of organic degradation on either common and artificial fabrics and items (plastics, fabric, fibres, leather-based and fur, wooden and so on). difficulties of utilisation of polymeric wastes utilizing microorganisms are mentioned and major safeguard tools and know-how for uncooked fabrics and semi-products opposed to biodamages are proven. useful suggestion for fight opposed to biodamage of fabrics by way of bugs (moth, leather-based beetles, wood-fretters, cockroaches and termites) and rodents (mice and rats) are given.

Since 1960 the biodamage challenge got the legit prestige as a wide foreign and useful course on the junction of sciences and perform of mankind and pooling efforts of varied experts. the ultimate aim of this booklet is to demonstrate that the matter of biodamages is particularly actual at the present time since it is proper to many elements of our daily lives.

This quantity is meant to be a pragmatic advisor on biodamage and biodegradation of polymeric fabrics and a brief connection with scholars and researchers from academia and the industry.

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This is explained by the fact that until now, the simplest method of measuring the water content of the substrate was the determination of total water content (moisture load). Moisture load is the total amount of water in the material expressed as a percentage of the mass of absolutely dry substrate. This definition gives no indication of the accessibility of this water to microorganisms, because it includes both bound and free moisture present in the substrate. , it is strongly bound to fibres on paper and cannot be used by microorganisms.

In the most cases, microorganisms change the pH of the medium on which they develop. Sometimes, this is associated with consumption of particular components of the medium, and in other cases, it is associated with the formation of metabolic products such as organic acids or ammonia. Intensive consumption of the nitrate anion from potassium nitrate inevitably renders the medium alkaline. The growth of fungi on protein-containing substrates such as leather and wool is accompanied by a pH shift towards alkalinity as a result of ammonia formation.

D. Ilyicheva, Nauka, Moscow, Russia, 1983. Biodamage, Methods of Protection: Proceedings, Naukova Dumka, Poltava, Ukraine, 1985. B. Blagnik, Microbiological Corrosion, Khimiya, Moscow, Russia, 1965. Y. Lugauskasa, Academy of Sciences Publishing House, Vilnius, Lithuania, 1990. A. Yermilov, Theoretical and Practical Bases of Microbial Degradation of Chemical Fibres, Nauka, Moscow, Russia, 1991. G. Kanev, Biological Damage on Industrial Materials, Nauka, Moscow, Russia, 1984. J. I. Y. Shlyauzhene, Catalog Micromycetes Biodestruktorov Materials, Nauka, Moscow, Russia, 1987.

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