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Wax characterisation by instrumental analysis
Thesis (MSc)--Stellenbosch University, 2000.
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| Format: | Thesis |
| Language: | en_ZA |
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Stellenbosch : Stellenbosch University
2012
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| _version_ | 1867614044254371840 |
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| access_status_str | Open Access |
| author | Webber, Glenda Vanessa |
| author2 | Sanderson, R. D. |
| author_browse | Sanderson, R. D. Webber, Glenda Vanessa |
| author_facet | Sanderson, R. D. Webber, Glenda Vanessa |
| author_sort | Webber, Glenda Vanessa |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MSc)--Stellenbosch University, 2000. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/52055 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA |
| last_indexed | 2026-06-10T12:45:46.810Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2012 |
| publishDateRange | 2012 |
| publishDateSort | 2012 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/52055 Wax characterisation by instrumental analysis Webber, Glenda Vanessa Sanderson, R. D. Stellenbosch University. Faculty of Science. Dept. of Chemistry & Polymer Science. Waxes Dissertations -- Polymer science Theses -- Polymer science Thesis (MSc)--Stellenbosch University, 2000. ENGLISH ABSTRACT: Various companies produce waxes, which are used extensively in various applications, either as produced or as chemically or physically modified value-added products. They are used in the traditional candle industry and applications including hot melt adhesives, inks, plastics, polishes and emulsions for rust prevention or fruit coating. Insight into the properties of these waxes is required to assist the applications chemist in understanding the role of the wax component in a specific formulation. Analytical techniques such as differential scanning calorimetry (DSC), thermogravimetry (TG), rheometry, gel permeation chromatography (GPC), high temperature gas chromatography (HTGC) and infra-red spectroscopy (IR) were used to characterise Fischer Tropsch, polyethylene, natural and petroleum waxes. Property profiles were formulated by integrating the results from the various techniques. The results of traditional wax analyses (e.g. congealing point, melting point, penetration, density and viscosity) were also correlated to relevant analytical results obtained from the instrumental techniques. Structure-property relationships have been proposed. AFRIKAANSE OPSOMMING: Verskeie maatskappye vervaardig wasse, wat in menige toepassings gebruik word - of direk, of as chemies- of fisies- veranderde produkte van hoër waarde. Benewens die tradisionele kersbedryf, word die wasse in toepassings soos warmsmeltkleefmiddels, ink, plastiek, roeswerende- en vrugtebedekkings- emulsies en politoere gebruik. Wetenskaplikes betrokke by die formuleering van wasse vir verskillende toepassings sal baat vind by beter inligting van waseienskappe en die rol van waskomponente in formulasies. Tegnieke, bv. differensialeskandeerkalorimetrie (DSC), termogravimetrie (TG), reologie, gelpermeasiechromotografie (GPC), hoëtemperatuurgaschromatografie (HTGC) en infrarooispektroskopie (IR), is gebruik om Fischer Tropsch-, polietileen-, petroleum- en natuurlike wasse te karakteriseer. Profiele van waseienskappe is geformuleer deur die integrasie van die data verkry van die verskillende analitiese tegnieke. Die resultate van tradisionële wasanalises (bv. stolpunt, smeltpunt, penetrasie, digtheid, viskositieit en olie-inhoud) word ook in verband gebring met die resultate van die instrumentele analises. Verbande tussen struktuur en waseienskappe word ook voorgestel. 2012-08-27T11:34:49Z 2012-08-27T11:34:49Z 2000-12 Thesis http://hdl.handle.net/10019.1/52055 en_ZA Stellenbosch University 116 p. : ill. application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Waxes Dissertations -- Polymer science Theses -- Polymer science Webber, Glenda Vanessa Wax characterisation by instrumental analysis |
| title | Wax characterisation by instrumental analysis |
| title_full | Wax characterisation by instrumental analysis |
| title_fullStr | Wax characterisation by instrumental analysis |
| title_full_unstemmed | Wax characterisation by instrumental analysis |
| title_short | Wax characterisation by instrumental analysis |
| title_sort | wax characterisation by instrumental analysis |
| topic | Waxes Dissertations -- Polymer science Theses -- Polymer science |
| url | http://hdl.handle.net/10019.1/52055 |
| work_keys_str_mv | AT webberglendavanessa waxcharacterisationbyinstrumentalanalysis |