Synthesis and characterization of branched polyglycerol surfactants

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dc.contributor.authorMoilanen, Eric
dc.contributor.departmentChalmers tekniska högskola / Institutionen för kemi och kemitekniksv
dc.contributor.departmentChalmers University of Technology / Department of Chemistry and Chemical Engineeringen
dc.contributor.examinerEvenäs, Lars
dc.contributor.supervisorBordes, Romain
dc.contributor.supervisorBilén, Frida
dc.date.accessioned2024-11-22T09:45:57Z
dc.date.available2024-11-22T09:45:57Z
dc.date.issued2024
dc.date.submitted
dc.description.abstractPolyglycerol surfactants have emerged as a promising renewable alternative to fossil based polyethylene glycol surfactants. The polyglycerol head group offers greater structural variability and possibility for functionalization. In order to facilitate the transition to renewable nonionic surfactants, a deeper understanding of the structure-property relationship, particularly regarding branching, is essential. To this end, two polyglycerol structures with different degrees of branching were synthesised through a series of chemical reactions. These structures were then esterified with carboxylate tails of varying lengths and analyzed by tensiometry, interfacial rheology and quartz crystal microbalance with dissipation monitoring. The results indicated that enlargement of the branched head group significantly influences the surfactants self-assembly and the air-water interfacial rheology. QCM-D analysis showed that the branched head group binds very strongly to hydrophilic surfaces, likely due to its hydroxylated nature.
dc.identifier.coursecodeKBTX12
dc.identifier.urihttp://hdl.handle.net/20.500.12380/309005
dc.language.isoeng
dc.setspec.uppsokPhysicsChemistryMaths
dc.titleSynthesis and characterization of branched polyglycerol surfactants
dc.type.degreeExamensarbete för masterexamensv
dc.type.degreeMaster's Thesisen
dc.type.uppsokH
local.programmeMaterials chemistry (MPMCN), MSc
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