Sökning: "acetone"
Visar resultat 1 - 5 av 50 uppsatser innehållade ordet acetone.
1. Investigation of Milled Wood Lignin Extraction Using Enzymatic Hydrolysis for Application in Hydrophobic Barriers in the Food Packaging Industry
Master-uppsats, Lunds universitet/Kemiteknik (CI)Sammanfattning : The objective of this report is twofold: to optimise the extraction method of lignin from spruce altering a few process parameters and to investigate the use of lignin as a hydrophobic barrier in food applications. The process used was STEX (steam explosion) pretreatment followed by enzymatic hydrolysis and MWL (milled wood lignin) extraction using a mixture of dioxane-water. LÄS MER
2. PHA-produktion och nerbrytning inom en industriell symbios. : Kan PHA produceras i en industriell symbios och har det rätt nedbrytningshastighet
M1-uppsats, Karlstads universitet/Institutionen för ingenjörs- och kemivetenskaper (from 2013)Sammanfattning : Sverige har som mål att vara koldioxidneutralt år 2045 och inte öka jordensmedeltemperatur med mer än 2°C. För att uppnå detta mål måste mängdenfossilbaserade produkter minskas eller fasas ut helt ur den svenska marknaden. Idagsläget är majoriteten av all plast producerad av fossila råvaror. LÄS MER
3. A Study on Lignin or Zein Based Hydrophobic Coatings
Master-uppsats, Lunds universitet/Kemiteknik (CI)Sammanfattning : The two by-products lignin, from the paper industry, and zein, from starch production, have shown potential as hydrophobic barriers. Therefore, this study has aimed to produce and in-vestigate the hydrophobicity of lignin or zein dispersions coated on paper. LÄS MER
4. A GREENER SOLUTION Investigating the potential use of Green Solvents to remove cellulose nitrate lacquer from silver objects
Kandidat-uppsats, Göteborgs universitet/Institutionen för kulturvårdSammanfattning : This thesis investigates the performance of non-hazardous solvent substitutes, so called “Green Solvents", for the removal of aged and unaged cellulose nitrate lacquer from silver surfaces. Literature research and preliminary tests resulted in four solvents of interest: ethyl acetate, ethyl lactate, propylene carbonate and dimethyl carbonate. LÄS MER
5. The Use of Gels for the Removal of Cellulose Nitrate Lacquer on Silver
Kandidat-uppsats, Göteborgs universitet/Institutionen för kulturvårdSammanfattning : The conservation of silver objects mainly constitutes addressing the issues of tarnish removal and of preventing tarnish. For decades lacquer has been used to coat silver objects in order to protect them from tarnishing. LÄS MER
