Polyesteramides based on epsilon-caprolactam and epsilon-caprolactone differing in the content of ester-amide structural units were subjected to biodegradation - composting in a big compost pile under controlled conditions (controlled composting) and in small composters at a steady temperature of 60 degrees C (isothermal composting). Both types of composting resulted in degradation of the polyesteramides depending on copolymer composition, isothermal composting being more robust. The contribution of abiotic hydrolysis to the degradation of polyesteramides was studied at 60 degrees C in buffer solutions with pH 5.4, 7.4 and 8.4. The prevailing effect of abiotic hydrolysis over biological one was shown at 60 degrees C. Ester bonds in polyestramide chains were preferentially cleaved; therefore, the scope of degradation increased with the content of ester units in the copolymer.

• MeSH
• biodegradace MeSH
• houby metabolismus   MeSH
• hydrolýza MeSH
• kaprolaktam chemická syntéza   chemie   metabolismus   MeSH
• kapronáty chemická syntéza   chemie   metabolismus   MeSH
• laktony chemická syntéza   chemie   metabolismus   MeSH
• polymery chemická syntéza   chemie   metabolismus   MeSH
• půda analýza   MeSH
• teplota MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Názvy látek
• caprolactone MeSH Prohlížeč
• kaprolaktam MeSH
• kapronáty MeSH
• laktony MeSH
• polymery MeSH
• půda MeSH

Two types of copolymers--poly(ester-amide)s--by the anionic copolymerization of epsilon-caprolactam and epsilon-caprolactone, and aromatic-aliphatic copolyesters based on glycolyzed polyethylene terephthalate from used beverage bottles and epsilon-caprolactone were prepared. Biodegradation tests of these copolymers were performed by two methods, viz. composting under controlled conditions and treatment with ligninolytic fungi. Both methods resulted in degradation of the copolymers, composting being more robust. Out of fungal strains tested Inonotus hispidus degraded aromatic-aliphatic copolyesters most intensively.

• MeSH
• Basidiomycota metabolismus   MeSH
• biodegradace MeSH
• kaprolaktam metabolismus   MeSH
• kapronáty metabolismus   MeSH
• laktony metabolismus   MeSH
• lignin metabolismus   MeSH
• mikroskopie elektronová rastrovací MeSH
• nylony metabolismus   MeSH
• půda * MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Názvy látek
• caprolactone MeSH Prohlížeč
• kaprolaktam MeSH
• kapronáty MeSH
• laktony MeSH
• lignin MeSH
• nylony MeSH
• půda * MeSH