Huvudmålet i projektet var att analysera det vanligt förekommande additivet glycerolmonostearat, GMS, i plastprover. Projektet är en del av ett samarbete mellan KTH och det norska företaget Norner. Projektgruppen har jobbat för att utvärdera och optimera företagets nuvarande analysmetod samt att identifiera glycerolmonostearat i polypropylen. Olika lösningsmedel och derivatiseringsreagens testades, såväl som olika temperaturprofiler, för gaskromatografen jämfördes under projektet. Resultaten visade att glycerolmonostearat kunde derivatiseras genom silylering. Alla prover har sammanfattats i en slutgiltig metod som är lämpad för analys av polyolefiner som innehåller glycerolmonostearat. Slutmetoden saknade möjligheten för kvantitativ analys och kan därför förbättras i framtiden. / The main task was to analyze the very common additive, glycerol monostearate, GMS in plastic samples. The project was a collaboration between KTH students and the Norwegian company Norner. The goal was to evaluate and optimize the company's current method of analysis and identification of the content of GMS in polyolefins. Different solvents, derivatization agents and methods for gas chromatography were compared to find an effective process by which additives in polypropylene samples can be analyzed. The results showed that glycerol monostearate can be derivatized through a process called silylation. All different attempts have been summarized into one final method that was most suitable for the analysis of polyolefins containing glycerol monostearate. The final method was reproducible but lacked a properly determined quantification analysis. The final method can be improved further after this project. To give a few examples there are a lot more potential derivatization agents and solvents that can be substituted which requires further research.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:kth-305891 |
| Date | January 2021 |
| Creators | Lund, Rebecka, Ibrahim, Raam, Johansson, Emil |
| Publisher | KTH, Kemi |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | TRITA-CBH-GRU ; 2021:257 |
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