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Showing 1 to 20 of 189 for “"Chemical modification"”.
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Chemical modification of polymers
… knowledge of PVC degradation and stabilisation, chemical modifications were imposed on degraded PVC and raw PVC with the aim of obtaining non-migrating additives. The modifications were carried out mainly in the presence of dibutyl maleate (DBM), and the resulting polymer contained dibutyl maleic …
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Chemical modification of smectite clays
… particle size, cation exchange capacity and chemical composition of clays was also examined. For Wyoming bentonite the extent of isomorphous substitution increases with decreasing particle size, causing the CEC to similarly increase, although the isomorphous substitution site: edge site ratio …
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Chemical Modification of Yeast Enolase
Made available in DSpace on 2014-12-05T19:37:55Z (GMT). No. of bitstreams: 1 6202885.pdf: 2306341 bytes, checksum: d6b410e0aac6ac71608aa1c2f3c9fea2 (MD5) Previous issue date: 1962
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Chemical modification of activated carbon adsorbents
… carbons have been modif fed using reactive chemicals to produce adsorbents of enhanced hydrophobic character which will also be resistant to surface oxidation that results from exposure to humid air ("ageing"). The intention was that modification would not disrupt the carbon pore structure. …
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Chemical Modification of Iron-Sulfur Cofactors
… to perform some of the most challenging chemical transformations in biosphere, such as activation of strong C–H bonds and reduction of N2, many of which are pertinent to human health and global biogeochemical cycles. We hypothesize that these unique reactivities of FeS cofactors arise at …
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Chemical Modification Methods for Protein Misfolding Studies
… for misfolding studies. We adopted the native chemical ligation (NCL) method between a C-terminal thioester fragment and an N-terminal Cys fragment. We first devised strategies for the synthesis of thioamide-containing peptide thioesters as NCL substrates, and demonstrated their applications in …
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Chemical modification of the surface of wool
The reactions of hypophosphorous acid ( H3P02 ) and phosphorous acid ( H3P03 ) with disuiphide compounds, particularly those of the cystine residues in wool, are investigated. The observed differences between the reactions of both acids are highlighted. Some of the products of the reaction of H3P02 …
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Chemical Modification of Alginates in Organic Media
… alginate esters were synthesized via modification of carboxylate groups on the backbone. These derivatives dissolved in polar aprotic solvents without the need to add TBAF. A proof of concept study showed their utility in the solubility enhancement of the poorly water soluble flavonoid …
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The chemical modification of polymer blends by reactive processing
… this research was to examine the concepts of the chemical modification of polymer blends by reactive processing using interlinking agents (multi-functional, activated vinyl compounds; trimethylolpropane triacrylates {TRIS} and divinylbenzene {DVD}) to target in-situ interpolymer formation between …
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Chemical Modification of Chymotrypsinogen a With a Bifunctional Reagent
Made available in DSpace on 2014-12-09T17:35:28Z (GMT). No. of bitstreams: 1 6607748.pdf: 4273278 bytes, checksum: 3a5035b338a6fb0eac549a532fbe0552 (MD5) Previous issue date: 1966
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Surface chemical modification of polyaramid filaments with amine plasmas
Thesis (Sc.D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1983.
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Chemical Modification of Cellulose Esters for Oral Drug Delivery
… groups have critical impacts upon physical, chemical and mechanical properties, and thus affect the specific applications of the polymer. Functionalization of cellulose esters and ethers has been under extensive investigation for applications including drug delivery, cosmetics, food …
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Synthesis and chemical modification of carbon nanostructures for materials applications
This dissertation explores the structure, chemical reactivities, electromagnetic response, and materials properties of various carbon nanostructures, including single-walled carbon nanotubes (SWCNTs), multi-walled carbon nanotubes (MWCNTs), graphite, and graphene nanoribbons (GNRs). Efficient …
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Chemical modification of petroleum coke and applications of derived materials
… in this thesis helped to explore the possible modifications and applications for using petcoke and taking advantage of its highly aromatic structure and high sulfur content.
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Chemical Modification of Cellulose Fibers and their Orientation in Magnetic Field
… entity and subjecting to a magnetic field. Chemically modified cellulose fibers (CLF) were oriented in dilute polylactic acid by subjecting the fiber and matrix to a magnetic field of ≈ 4T (Tesla). CLF and Microcrystalline cellulose (MCC) were oxidized with Hydrogen peroxide and further …
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