Synthesis and degradation of biodegradable polyurethanes

A tétel rövid nézete
dc.contributor.advisorCzifrák, Katalin Margit
dc.contributor.authorDiale , Lehlohonolo
dc.contributor.departmentDE--Természettudományi és Technológiai Kar--Biotechnológiai Intézet
dc.date.accessioned2022-11-14T07:33:31Z
dc.date.available2022-11-14T07:33:31Z
dc.date.created2022-11-08
dc.description.abstractIn this research, six samples of biodegradable polyurethanes were synthesized and investigated under natural conditions. The polymers were synthesized by reacting polycaprolactone, polycarbonatediol polyols with 1,6-hexamethylene diisocyanate or 4,4’-methylenediphenyl diisocyanate and glucose was used as a cross linking agent to improve biodegradability. Once synthesized, the biodegradability and properties of the polymers were observed by placing fragments of the samples in soil, exposing them to sunlight and submerging them in a water complex that contained detergent. The degradation of the polyurethanes under the named conditions was then observed by measuring the change in mass of the samples over time. The trend in mass changes under the three conditions was visualized graphically and the degree of disintegration was calculated to evaluate the biodegradability of the samples over time. Since this research was done in a relatively short span of time there were little changes to the samples due to uncontrollable natural conditions like the weather, but significant data was obtained which assisted in analysing how the biodegradability of a polyurethanes can be improved.
dc.description.courseBiochemical Engineering
dc.description.degreeBSc/BA
dc.format.extent31
dc.identifier.urihttps://hdl.handle.net/2437/339696
dc.language.isoen
dc.subjectBiodegradability
dc.subjectPolyurethanes
dc.subjectGlucose-HDI
dc.subject.dspaceDEENK Témalista::Kémia
dc.subject.dspaceDEENK Témalista::Környezettudományok
dc.titleSynthesis and degradation of biodegradable polyurethanes
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Theses (Faculty of Science and Technology)