Sintetiese, termodinamiese en elektrochemiese aspekte van saamgestelde dryfmiddel komponente
| dc.contributor.advisor | Swarts, J. C. | |
| dc.contributor.author | Maree, Suzanne Elizabeth | |
| dc.date.accessioned | 2018-03-22T09:47:02Z | |
| dc.date.available | 2018-03-22T09:47:02Z | |
| dc.date.issued | 1998-11 | |
| dc.description.abstract | English: 2,2-di(ethylferrocenyl)propane and butacene were synthesised and evaluated in an attempt to overcome the migration tendencies of ferrocene. Both are very efficient as high burning rate catalysts in composite propellants, but the latter, in which the ferrocenyl group is covalently bonded to the propellant binder, has superior ageing characteristics. Poly epichlorohydrin was developed as an oxygen-rich energetic propellant binder in order to establish a composite propellant that burns without a smoke trace. Isophthaloyldi-1-(2-methyl)aziridine (HX-752) and a dimethylaziridine ferrocenoic conjugate were synthesised as binders. The latter was synthesised in order to develop a binder that also possesses high burning rate catalytic properties. Nuclear magnetic resonance spectroscopy, infrared carbonyl stretching frequencies and formal reduction potentials were used to determine group electronegativities of ferrocene carbonyl derivatives of the form FcCOR with R = Fe", N3-, H, OMe, OH- and NH2. The qualitative order of electron withdrawing qualities were determined as follows: Strongest electron withdrawing: CF3(0.508mV>Fc+(0.444mV>N3-(0.387mV> H(0.366mV>CsHs(0.333)-CH3(0.331 mV>OMe(0.327mV>OH(0.319mVFc(0.263mV)-NH2(0.261 mV): weakest electron withdrawing | en_ZA |
| dc.description.abstract | Afrikaans: In 'n poging om migreringstendense van ferroseen in saamgestelde dryfmiddels te oorkom, is 2,2-di(etielferroseniel)propaan en butaseen as hoë brandspoedkatalisatore gesintetiseer en geevalueer. Beide is baie goeie hoë brandspoedkatalisatore in saamgestelde dryfmiddéls, maar laasgenoemde beskik oor die beste verouderingseienskappe omdat die ferroseniel groep kovalent aan die dryfmiddelbinder gebind is. Poliepiehlorohidrien is as 'n suurstofryke energetiese dryfmiddelbinder ontwikkel ten einde 'n saamgestelde dryfmiddel daar te stel wat rookloos brand. Isoftaloïeldi-1-(2-metiel)asiridien (HX-752) en 'n dimetielasiridien ferrosenoïelkonjugaat is as bindmiddel gesintetiseer. Laasgenoemde is ontwikkel om In bindmiddel daar te stel wat as hoë brandspoedkatalisator kan funksioneer. opsornmlng In 'n poging om migreringstendense van ferroseen in saamgestelde dryfmiddels te oorkom, is 2,2-di(etielferroseniel)propaan en butaseen as hoë brandspoedkatalisatore gesintetiseer en geevalueer. Beide is baie goeie hoë brandspoedkatalisatore in saamgestelde dryfmiddéls, maar laasgenoemde beskik oor die beste verouderingseienskappe omdat die ferroseniel groep kovalent aan die dryfmiddelbinder gebind is. Poliepiehlorohidrien is as 'n suurstofryke energetiese dryfmiddelbinder ontwikkel ten einde 'n saamgestelde dryfmiddel daar te stel wat rookloos brand. Kern magnetiese resonans spektroskopie, infrarooi karbonielstrekkingsfrekwensies en formele reduksiepotensiale van ferroseen karbonielverbindings van die vorm FcCOR is gebruik om groepselektronegatiwiteite van die R = Fe+, N3-: H, OMe, OH· en NH2 te bepaal. Die kwalitatiewe orde van elektrononttrekkende eienskappe is as volg bepaal: mees elektrononttrekkend: CF3(0.508mV>Fe+(0.444mV>N3-(0.387mV>H(0.366mV>CsHs (0.333)-CH3(0.331 mV>OMe(0.327mV>OH-(0.319mV>Fe(0.263mV)-NH2(0.261 mV): mins elektrononttrekkend | en_ZA |
| dc.identifier.uri | http://hdl.handle.net/11660/8054 | |
| dc.language.iso | af | en_ZA |
| dc.publisher | University of the Free State | en_ZA |
| dc.rights.holder | University of the Free State | en_ZA |
| dc.subject | Rockets (Aeronautics) -- Fuel | en_ZA |
| dc.subject | Ferrocene | en_ZA |
| dc.subject | Propane -- Synthesis | en_ZA |
| dc.subject | Dissertation (M.Sc. (Chemistry))--University of the Free State, 1998 | en_ZA |
| dc.title | Sintetiese, termodinamiese en elektrochemiese aspekte van saamgestelde dryfmiddel komponente | en_ZA |
| dc.type | Dissertation | en_ZA |