Degradable Polymers, Recycling, and Plastics Waste by Albertsson

By Albertsson

In keeping with the foreign Workshop on managed Life-Cycle of Polymeric fabrics held in Stockholm, this paintings examines degradable polymers and the recycling of plastic fabrics. It highlights contemporary effects on recycling and waste administration, together with issues comparable to renewable assets, degradation, processing and items, and environmental concerns.

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GlcNAc units), it isnamedchitosan. The criteria for distinguishingbetweenchitin and chitosan are the solubilities ofthe polymers in dilute aqueous acid: chitin is insoluble whilechitosan forms viscoussolutions. As arule of thumb, the degreeof Nacetylation (DA) of chitosan is 540. , chitosan sulfate). A comprehensive treatise of general “chitinology” is available in Muzzarelli’s unsurpassed classical textbook [ 1 while a more recentbook deals more specifically with chitin chemistry [ The growing interest in chitin and chitosan is reflected by a series of International Chitin Conferences and the published proceedings OCCURRENCEANDRESOURCES Chitin occurs as a structural component of the exoskeleton of insects and crustacea aswell as in thecell wallof yeasts and fungi whereits relative amounts are in the range of to 60%.

Fogarty and H. Tuovinen, Microbiol. , 55,225-233 (1991). D. R. Reinhart and F. G. Pohland, J. Ind. , 8, 193-200 (1991). , 1987. J. M. Mayer, M. Greenberger, D. L. Kaplan, R. A. Gross, and S. P. McCarthy, Polym. Mater. Sei. , 63,858-861 (1990). J. E. McCassie, J. M. Mayer, R. E. Stote, A. E. Shupe, P. J. Stenhouse, P. A. Dell, and D. L. , 67,353-354 (1992). J. Mayer and D. Kaplan, in Biodegradable Polymers andPackaging Materials (C. Ching, D. Kaplan, and E. , Lancaster, Pennsylvania, 1993, pp. 233-245.

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