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Uppbearbetning av förorenat NaMCA-salt vid MCA-fabrik
2000 (Swedish)Independent thesis Advanced level (degree of Master (One Year))Student thesis
Abstract [en]

At Akzo Nobels Functional Chemicals NaMCA-production site in Skoghall, Sweden, there is a stock of contaminated NaMCA desirable to purify. One alternative would be to react NaMCA to another compond. Glycolide, 1,4-dioxan-2,5-dione, is a desirable product to prepare from NaMCA. The glycolide can be used as monomer to produce biodegradable polymers, polyglycolides, with a wide range of use. Lactolide, 3,6-dimetyl-1,4-dioxan-2,5-dione, prepared from lactic acid is stable in an aquatic solution at elevated temperatures and the glycolide is also supposed to be stable in a hot water solution. Experiments with contaminated NaMCA in boiling NaOH-solution produce a NMR spectra with two peaks; 3.65 and 3.75 ppm respectively. The peaks are assumed to be an oligomere (3.65 ppm) and a glycolide dimer (3.75 ppm). When the polymere mixture is left at room temperature, it is degraded to glycolic acid. Separation of glycolide from water was not successful

Place, publisher, year, edition, pages
2000. , 22 p.
Identifiers
URN: urn:nbn:se:kau:diva-52407Local ID: KEM-10OAI: oai:DiVA.org:kau-52407DiVA: diva2:1100933
Subject / course
Chemistry
Available from: 2017-05-29 Created: 2017-05-29

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