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Title: Studies on sprosiloxane oligomers and polysila hydrocarbons
Researcher: Devapal, Deepa
Guide(s): Packirisamy, S
Ninan, K N
Keywords: Chemistry
Borosiloxane oligomers
thermal degradation kinetics
preceramic polymers
precursors for ceramics
oxidation resistant coatings
atomic oxygen resistant materials
glass coating
ceramic matrix composite
Upload Date: 24-Jan-2013
University: Mahatma Gandhi University
Completed Date: August 2006
Abstract: Boron and silicon containing polymers/oligomers have gained importance, in recent years, as they offer many advantages compared to polymers containing only boron/silicon. On pyrolysis in inert atmosphere they give mixed non-oxide ceramics, which possess better high temperature properties and oxidation resistance compared to simple non-oxide ceramics. Hence, they are used as high temperature coatings, thermal protective systems, matrix resins and high temperature elastomers. The aim of the work embodied in the thesis has been to develop thermally stable borosiloxane oligomers and evaluate them as precursors for ceramics and study their end-uses for space applications. Another class of preceramic polymers is polysilahydrocarbons, which contain silicon and carbon in the backbone. In addition to the investigation on borosiloxane oligomers, the present thesis focuses on the thermal degradation behavior of polysilahydrocarbons and their evaluation as atomic oxygen resistant coating for low earth orbit space structures.
Pagination: 303p.
Appears in Departments:School Of Chemical Sciences

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01_title.pdfAttached File13.81 kBAdobe PDFView/Open
02_dedication.pdf15.57 kBAdobe PDFView/Open
03_certificate.pdf40.57 kBAdobe PDFView/Open
04_declaration.pdf22.21 kBAdobe PDFView/Open
05_acknowledgements.pdf21.29 kBAdobe PDFView/Open
06_preface.pdf17.29 kBAdobe PDFView/Open
07_abbreviations.pdf16.81 kBAdobe PDFView/Open
08_abstract.pdf51.22 kBAdobe PDFView/Open
09_contents.pdf32.86 kBAdobe PDFView/Open
10_list of tables.pdf59.58 kBAdobe PDFView/Open
11_list of figures.pdf81 kBAdobe PDFView/Open
12_chapter 1.pdf283.5 kBAdobe PDFView/Open
13_chapter 2.pdf93.19 kBAdobe PDFView/Open
14_chapter 3.pdf8.08 MBAdobe PDFView/Open
15_chapter 4.pdf91.09 kBAdobe PDFView/Open
16_publications.pdf27.14 kBAdobe PDFView/Open

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