2026-09-24T07:19:22Zhttps://bura.brunel.ac.uk/oai/request

oai:bura.brunel.ac.uk:2438/62742014-11-01T12:52:11Zcom_2438_58col_2438_3672

Sammes, PG Tyman, JHP Bruce, Ian Edward 2012-02-24T10:54:26Z 2012-02-24T10:54:26Z 1991 http://bura.brunel.ac.uk/handle/2438/6274 This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University. The major phenolic lipids from natural and technical Cashew Nut-Shell Liquids were isolated by various techniques including precipitation, chemical purification, distillation, phase separation and chromatography. Cardanol, 3-pentadecyl phenol and cardol were polyethoxylated under base catalysed conditions and the products were characterised by both nmr and HPLC. Their surfactant properties were then analysed by surface tension measurements and their rates and extent of biodegradation were evaluated by means of a modified OECD screening test. The synthesis of the biosyntetic intermediate 2,4-dihydroxy-6-pentadecyl benzoic acid, by means of a Horner-Emmons modification to the Wittig reaction, is also reported. Some studies with cavitands are also reported, including the synthesis of some novel macrocycles and some sugar transport studies. Submitted by Lesh Gowreesunker (lesh.gowreesunker@brunel.ac.uk) on 2012-02-24T10:54:18Z No. of bitstreams: 1 Fulltext.pdf: 6115819 bytes, checksum: 0a15504bb9847df0d53d8d2945ff59c0 (MD5) Approved for entry into archive by Lesh Gowreesunker(lesh.gowreesunker@brunel.ac.uk) on 2012-02-24T10:54:26Z (GMT) No. of bitstreams: 1 Fulltext.pdf: 6115819 bytes, checksum: 0a15504bb9847df0d53d8d2945ff59c0 (MD5) Made available in DSpace on 2012-02-24T10:54:26Z (GMT). No. of bitstreams: 1 Fulltext.pdf: 6115819 bytes, checksum: 0a15504bb9847df0d53d8d2945ff59c0 (MD5) en Brunel University Institute for the Environment PhD Theses http://bura.brunel.ac.uk/bitstream/2438/6274/1/FulltextThesis.pdf A study of cashew nut shell liquid purification and the synthesis of nonionic surfactants from the component phenols Thesis