Thèses sur le sujet « Synthetic pigment »
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McNair, Craig. « Synthetic approaches to substituted Ca4B-type azo compounds ». Thesis, University of Strathclyde, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366902.
Texte intégralSwan, Paul Lombard. « Synthesis of mixed ligand, water soluble square planar platinum (II) complexes and an investigation of their association with haematin and potential to inhibit the formation of synthetic malaria pigment ». Master's thesis, University of Cape Town, 2002. http://hdl.handle.net/11427/9782.
Texte intégralTo establish their potential as a template for novel anti-malarial drugs, a series of planinum (II) complexes were synthesised, their association with haematin determined in 40 aqueous DMSO, pH 7.4 at 25°C and their ability to inhibit the formation of β-haematin (synthetic malaria pigment) was investigated. The compounds synthesised and investigated contained a platinum (II) ion coordinated to acylthiourea and diimine ligands. The diimines used included both substituted and unsubstituted 2,2’-bipyridines and 1,10-phenanthrolines. 2-phenyl pyridine was also utilised as a ligand. It has been shown that the uncoordinated planar ligands interact weakly with haematin with a log K in the range of 1.9 and 3.3 while the twisted or more sterically hindered ligands show no observable association with porphyrin. A series of complexes having platinum coordinated which was reflected in association constant log K values in the range of 4.8 to 5.8. Using a 1,10-phenanthroline ligand in place of a 2,2-bipyridine ligand increased the association constant of the platinum complex, resulting in this series of complexes having log K values in the range of 5.8 to 6.2. It has been shown that when platinum (II) is coordinated to diimines, it is the electron withdrawing properties of the metal which result in the strong association between the diimine containing complex and haematin. Finally both the complex containing platinum cis to two acylthiourea ligands as well as a platinum complex containing 2-phenyl pyridine were shown to have no observable interaction with haematin.
Kahya, Sevinc Sevim. « Synthesis And Characterization Of Fluorescent Zinc Phthalocyanine Pigments And Its Combination Pigment With Mica Titania Pig Ment ». Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12615041/index.pdf.
Texte intégralC. It is observed that, with the increasing amount of ZnPc, the interaction between ZnPc particles increases and they desorp the surface of mica-titania pigment. The best result was obtained with 0.08 g ZnPc at 120 oC.
Pegg, N. A. « Synthesis of natural fungal pigments ». Thesis, University of Nottingham, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380151.
Texte intégralCosta, Asenete Frutuoso da. « S?ntese e caracteriza??o de espin?lios a base de Cu, Fe e Cr para pigmentos cer?micos ». Universidade Federal do Rio Grande do Norte, 2010. http://repositorio.ufrn.br:8080/jspui/handle/123456789/12705.
Texte intégralCoordena??o de Aperfei?oamento de Pessoal de N?vel Superior
Inorganic pigment comprises a host lattice, which is part of the chromophore component (usually a transition metal cation) and possible components modifiers, which stabilize, add or restate the properties pigments. Among the materials with spinel, ferrites, and the chromite stand out, because they have broad technological importance in the area of materials, applicability, pigments, catalytic hydrogenation, thin film, ceramic tiles, among others. The present work, pigments containing CuFe2O4, CuCr2O4,e CuFeCrO4, were synthesized by a method that makes use of gelatin as organic precursor using their application to ceramic pigments. The pigments were characterized by X-ray diffraction (XRD), Infrared spectroscopy, scanning electron microscopy (SEM) spectroscopy in the UV-visible and Colorimetry. The results confirmed the feasibility of the synthetic route used, with respect to powders synthesized, there is the formation of spinel phase from 500?C, with an increase in crystallinity and the formation of other phases. The pigments were shown to be crystalline and the desired phases were obtained. The copper chromite have hues ranging from green to black according to the calcination temperature, while the copper chromite doped with iron had brownish. The ferrites showed copper color and darker brown to black, which may indicate an interesting factor because of the importance of black pigment
Pigmento inorg?nico ? formado por uma rede hospedeira, na qual se integra o componente crom?foro (normalmente um c?tion de metal de transi??o) e os poss?veis componentes modificadores, que estabilizam, conferem ou reafirmam as propriedades pigmentantes. Dentre os pigmentos, as estruturas tipo espin?lio se destacam por possuir ampla import?ncia tecnol?gica na ?rea de materiais, com aplica??o em pigmentos, cat?lise de hidrogena??o, filmes finos, revestimentos cer?micos, dentre outros. No presente trabalho, pigmentos contendo CuFe2O4, CuCr2O4,e CuFeCrO4 foram sintetizados por uma nova rota qu?mica usando gelatina como precursor org?nico visando sua aplica??o para pigmentos cer?micos. Os pigmentos foram caracterizados por difra??o de raios X (DRX), espectroscopia na regi?o do Infravermelho, Microscopia eletr?nica de varredura (MEV) espectroscopia na regi?o do UV-Vis?vel e Colorimetria. Os resultados confirmaram a viabilidade da rota de s?ntese utilizada; Com rela??o aos p?s-sintetizados, observase a forma??o da fase espin?lio a partir de 500oC, com um aumento da cristalinidade, bem como a forma??o de outras fases. Os pigmentos se mostraram cristalinos e as fases desejadas foram obtidas. As cromitas de cobre possuem tonalidades que v?o do verde ao preto, de acordo com a temperatura de calcina??o, enquanto que as cromitas de cobre dopadas com ferro obtiveram colora??o marrom. As ferritas de cobre apresentaram cores bem mais escuras, do marrom ao preto, o que ? uma caracter?stica interessante devido ? grande import?ncia dos pigmentos pretos na ind?stria cer?mica
Hartnell, Regan David. « The synthesis of novel porphyrinoid pigments ». Thesis, Queensland University of Technology, 2000. https://eprints.qut.edu.au/37043/6/37043_Digitised%20Thesis.pdf.
Texte intégralHughes, Eric M. « Synthesis and characterisation of inorganic pigments ». Thesis, University of Southampton, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313210.
Texte intégralBooth, Douglas Geoffrey. « Synthesis and struture of ultramarine pigments ». Thesis, University of Southampton, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250047.
Texte intégralGatelytė, Aurelija. « Synthesis and characterization of novel black pigments ». Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2012. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2012~D_20120402_093928-15742.
Texte intégralBuvo sudaryti modeliniai juodieji pigmentai iš C suodžių ir K2CO3, Ca3(PO4)2, CaCO3 bei Mg3(PO4)2.Vandeniniu zolių-gelių metodu buvo susintetinti įvairūs metalų vienfaziai nanoferatai YFeO3, Y3Fe5O12, CoFe2O4, NiFe2O4, ZnFe2O4, kurie pirmą kartą panaudoti juodaisiais keraminiais pigmentais.
Stott, Colin Mark. « Synthesis and photoconduction properties of haloanthanthrone pigments ». Thesis, Open University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.255409.
Texte intégralTopuz, Burcu Berna. « Synthesis And Characterization Of Copper Phthalocyanine Deposited Mica Titania Pigment ». Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/3/12611519/index.pdf.
Texte intégralOwens, Craig. « Synthesis and structural characterisation of mixed-metal oxide pigment systems ». Thesis, University of Southampton, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.419147.
Texte intégralTabarya, Daniel. « Studies of the Membrane and DNA Gyrase Inhibiting Antibiotics on Pigment Synthesis in Corynebacterium Poinsettiae ». Thesis, University of North Texas, 1988. https://digital.library.unt.edu/ark:/67531/metadc935771/.
Texte intégralCrow, M. A. « The genetic regulation of pigment and antibiotic synthesis in Serratia sp ». Thesis, University of Cambridge, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.598191.
Texte intégralHirst, James Peter. « The synthesis and characterisation of new inorganic pigments ». Thesis, University of Liverpool, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.415659.
Texte intégralWood, Pamela. « Synthesis and characterisation of Bismuth orthovanadate ». Thesis, University of Aberdeen, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386303.
Texte intégralIvaniuk, H. « Synthesis of brown pigments iron-zink spinel from hydroxide ». Thesis, Sumy State University, 2016. http://essuir.sumdu.edu.ua/handle/123456789/52658.
Texte intégralRugen-Hankey, Sarah. « Synthesis of phthalocyanines for dye sensitized solar cells and stabilised pigment systems ». Thesis, Swansea University, 2010. https://cronfa.swan.ac.uk/Record/cronfa42591.
Texte intégralDoksa, Alexander P. « Synthesis of Iron Oxide Pigment from the Treatment of Truetown Acid Mine Drainage Utilizing Aeration ». Ohio University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1420801380.
Texte intégralKumar, Swati. « Optical and vibrational spectroscopic studies of synthetic Maya pigments as a function of concentration of indigoid dyes ». To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2008. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.
Texte intégralBoothman, Stuart Roy. « The effect of high temperature on lycopene synthesis and degradation in tomato fruit (Lycopersicon esculentum) ». Thesis, University of Liverpool, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365895.
Texte intégralBories-Azeau, Xavier. « Synthesis of novel block copolymer dispersants for water-borne pigments ». Thesis, University of Sussex, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.555262.
Texte intégralJoll, Cynthia Ann. « The asymmetric synthesis of isochromans related to the aphid pigments ». Thesis, Joll, Cynthia Ann (1995) The asymmetric synthesis of isochromans related to the aphid pigments. PhD thesis, Murdoch University, 1995. https://researchrepository.murdoch.edu.au/id/eprint/51655/.
Texte intégralOosthuizen, Francois Jacobus. « Synthesis of hongconin and related naphtho[2,3-c]pyrans ». Thesis, Cape Technikon, 1995. http://hdl.handle.net/20.500.11838/746.
Texte intégralThe naphtho[2,3-c]pyran occurs frequently in nature as derivatives of the 5,10 quinones. The most common examples include the eleutherins and protoaphins. These naturally occurring compounds have been found to possess antibiotic activity through the process of bioactivation. The possibility of appropriately substituted compounds functioning as bioreductive alkylating agents provides a logical model that has a great deal of predictive power. The thesis deals with the synthesis of some naphtho[2,3-c]pyrans to be tested biologically; the challenge being to design compounds in a biologically inactive form which become activated only subsequent to an in-vivo transformation. Chapter One describes and compares a high yielding synthesis of a naphtho[2,3c] pyran, hongconin, to a previous route.,a Racemic hongconin (29) has been synthesised from adduct (43) formed by reaction between 1-methoxycyclohexa1,4- diene (41) and 1,4-benzoquinone (42). The key steps includes Fries and Claisen rearrangements, base and cerium(lVj initiated pyran ring formation, C-4 pyran ring hydroxylation and silver(ll) mediated oxidation. The target compound (29) was tested in vitro for antimicrobial activity and compared to the results obtained for isoeleutherin (2) and its 9-demethoxy analoque (30). The spectral data, melting points and yields of the individual compounds is as described in Chapter Two.
Keates, Adam. « The design and synthesis of near infra-red absorbing inorganic pigments ». Thesis, University of Southampton, 2015. https://eprints.soton.ac.uk/380915/.
Texte intégralWard, Christopher. « The production of synthetic rutile and by-product iron oxide pigments from ilmenite processing ». Murdoch University, 1990. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20070831.150010.
Texte intégralWard, Christopher B. « The production of synthetic rutile and by-product iron oxide pigments from ilmenite processing / ». Access via Murdoch University Digital Theses Project, 1990. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20070831.150010.
Texte intégralWard, C. B. « The production of synthetic rutile and by-product iron oxide pigments from ilmenite processing ». Thesis, Ward, C.B. (1990) The production of synthetic rutile and by-product iron oxide pigments from ilmenite processing. PhD thesis, Murdoch University, 1990. https://researchrepository.murdoch.edu.au/id/eprint/389/.
Texte intégralKedy, Pulcherie. « Contribution à l'étude de la 5-aminolévulinate déshydratase chez le radis et un mutant chlorophyllien de tabac ». Rouen, 1996. http://www.theses.fr/1996ROUES049.
Texte intégralHuang, Hsiang-Yu. « Synthetic and structural studies of high performance naphtholazo red pigments in relation to application performance ». Thesis, Heriot-Watt University, 2008. http://hdl.handle.net/10399/2181.
Texte intégralWalsh, Amy. « Synthesis and analysis of poly(methacrylic acid-co-benzyl methacrylate) copolymers for stable aqueous pigment dispersions ». Thesis, University of Sheffield, 2014. http://etheses.whiterose.ac.uk/6457/.
Texte intégralAsmaoglu, Serdar. « Synthesis And Charaterization Of Multi-hollow Opaque Polymer Pigmets ». Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614539/index.pdf.
Texte intégralWater-in-Oil-in-Water&rdquo
(W/O/W) emulsion system. Oil phase was methyl methacrylate and ethylene glycol dimethacrylate monomer mixture at 1:1 weight ratio. The dimension and distribution of hollows inside polymer particles are dependent on the size of water droplets which are encapsulated in micelles. For Water-in-Oil (W/O) assembly, a hydrophobic surfactant and hydrophilic co-surfactant (Span 80-Tween 80) combination with a hydrophilic/lipophilic balance (HLB) value between 5-8 was used. The effects of surfactant and co-surfactant composition on the stability of the W/O emulsion and also on the size of water droplets were studied. In addition, the effect of the ultrasonication on the average size of water droplets was investigated. The hollow size distribution which may possibly give the maximum scattering efficiency was predicted by a mathematical model based on the Mie scattering. The optimum size distribution for W/O emulsion was obtained at the monomer/surfactant/water ratio of 75.5/9.4/15.1 after ultrasonication for 30 seconds at 80 W power. The W/O/W emulsion was prepared by dispersing the W/O emulsion in aqueous solution of hydrophilic Triton X-405. The influence of surfactant concentration and mechanical mixing on monomer droplets was investigated by size measurement and optical microscopy. After stabilizing with 1 %w/w polyvinylpyrrolidone (PVP) solution, the W/O/W emulsion was polymerized at 55 °
C for 20 h. The surface morphology of synthesized polymer pigments was analyzed by scanning electron microscopy (SEM) and the inner hollow structure was confirmed by transmission electron microscopy (TEM). The analysis indicated that multihollow opaque polymer pigments were successfully synthesized. The opacity, the L*a*b* color, and the gloss properties of polymer pigments were examined by spectrophotometer and glossmeter. The opacity values were assessed by contrast ratio measurements, and the synthesized polymer pigments provided up to 97.3 % opacity (50 %v/v solid content). In addition, the pigments exhibited low gloss values, and yielded matt films.
Wilson, Anthony James. « Synthesis of novel inhibitors of CDK 4 / Cyclin D1 based on the natural marine sponge pigment fascaplysin ». Thesis, University of Leicester, 2009. http://hdl.handle.net/2381/4531.
Texte intégralCommander, Paul Martin Brial. « An investigation of the regulation and synthesis of a novel quorum sensing controlled pigment from Erwinia carotovora ». Thesis, University of Cambridge, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.620587.
Texte intégralKurniadi, Juliana [Verfasser], Martin [Akademischer Betreuer] Möller et Alexander [Akademischer Betreuer] Böker. « In situ synthesis of pigments in keratin fibres / Juliana Kurniadi ; Martin Möller, Alexander Böker ». Aachen : Universitätsbibliothek der RWTH Aachen, 2015. http://d-nb.info/1128156970/34.
Texte intégralRussu, Sergio. « High-throughput synthesis and characterization of vanadium mixed metal oxide pigments using synchrotron radiation ». Thesis, University of Southampton, 2008. https://eprints.soton.ac.uk/71830/.
Texte intégralGayo, Griselda Xoana. « Fabricación de pigmentos cerámicos con criterios sustentables ». Doctoral thesis, Universitat Jaume I, 2017. http://hdl.handle.net/10803/404047.
Texte intégralThis thesis is focussed on the manufacture of ceramic pigments, using the traditional ceramic procedure of synthesis, departing from structurally simple oxidic systems and by incorporating a minimum amount of chromophore cations as dopants. This study is based on the physicochemical properties and crystalline structures of the materials. The development of the pigments has been established on the possible formation of colored solid solutions and structural phases, in order to apply them in ceramic enamels. Various techniques of analysis were used for the characterization and analysis of properties of the materials. The results obtained are detailed, starting from Chapter 3, with the development of materials with the typical structures of rutile, willemita and mixed oxides LnCrTeO6. In Chapter 6, the possibility of reusing a chromium-rich residue, both in the synthesis of pigments and in the coloring of ceramic matrices, is discussed, for its revaluation and reduction of environmental impact.
Howie, Bruce David. « Synthesis and evaluation of pigments with the potential to replace compounds based on 3,3'-Dichlorobenzidine ». Thesis, Heriot-Watt University, 2003. http://hdl.handle.net/10399/433.
Texte intégralChughtai, Imran Bashir. « The influence of synthesis conditions on the surface character and application properties of azo pigments ». Thesis, Heriot-Watt University, 1999. http://hdl.handle.net/10399/1156.
Texte intégralHepburn, James. « An investigation into the enhancement of fluorescence of disazo pigments by their synthesis in micellar solutions ». Thesis, University of Strathclyde, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.486456.
Texte intégralAlvarez, Mary Allison. « Pyridinium Bis-retinoids : Extraction, Synthesis, and Folate Coupling ». BYU ScholarsArchive, 2007. https://scholarsarchive.byu.edu/etd/8870.
Texte intégralJin, Jiyang. « Synthesis of Novel Hydrogen-Bonding Unit for Organic Field-Effect Transistors ». University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1460047707.
Texte intégralSturtz, Benjamin Walden. « Synthesis and Structural Chemistry of Diamagnetic Dimeric Metal Phthalocyanines ». Case Western Reserve University School of Graduate Studies / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=case1496922051865658.
Texte intégralBat, Erhan. « Synthesis And Characterization Of Hyperbranched And Air Drying Fatty Acid Based Resins ». Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606270/index.pdf.
Texte intégral#61655
s to 5.8 Pa&
#61655
s as the amount of the Linseed FA was increased. The resins showed excellent adhesion, gloss, flexibility and formability.
Karakaya, Ceylan. « Synthesis Of Oil Based Hyperbranched Resins And Their Modification With Melamine Formaldehyde Resins ». Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606339/index.pdf.
Texte intégralC in the presence of sodium hydroxide as catalyst. The resulting molecule, in either case, was then esterified with dimethylol propionic acid at 140°
C in the presence of p-toluene sulfonic acid as catalyst. Melamine-formaldehyde resin was synthesized to be used with the synthesized hyperbranched resins, and it was successfully modified by all hyperbranched resins at a ratio of 3:1. FTIR spectroscopy was used to characterize the hyperbranched resins and the thermal properties were determined by DSC. DSC showed that the hyperbranched resins decomposed between 315-345°
C. The viscosity of the resin that was synthesized by using only castor oil was 3.0 Pa.s and by using 50% linseed oil it was 1.0 Pa.s. When reacted with dimethylol propionic acid, the former&rsquo
s viscosity increased to 7.0 Pa.s, and the second&rsquo
s viscosity increased to 3.7 Pa.s. The hyperbranched resins showed excellent adhesion, gloss, flexibility, and formability. The mixture of hyperbranched resin plus melamine-formaldehyde resin samples had higher hardness values but lower gloss, adhesion and bending resistance values than the hyperbranched resins, and they had good impact and abrasion resistances.
ROSSIGNOL, NATHALIE. « Procedes d'extraction et de separation par membranes appliques a la production du pigment endo- et exocellulaire synthetise par la diatomee haslea ostrearia simonsen. Mise en oeuvre d'un photobioreacteur a membranes a fonctionnement continu ». Nantes, 1999. http://www.theses.fr/1999NANT2095.
Texte intégralФедоренко, Андрей Александрович. « Электрохимический синтез титана(III) сульфата в технологии производства титана(IV) оксида ». Thesis, Таврический национальный университет им. В. И. Вернадского, 2015. http://repository.kpi.kharkov.ua/handle/KhPI-Press/17223.
Texte intégralThesis for granting the Degree of Candidate of Technical sciences in specialty 05.17.03 – Technical Electrochemistry. – National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2015. The thesis work is devoted to the improvement of the sulfate production technology of the pigment TiO₂ via renewal of ions in the aqua of Fe³⁺ and TiO²⁺ not Fe, Al, but electrochemically, what excludes the chromophor accumulation in fluid converter mouth, thereby guarantees the end products high quality. However currently the overpressure of hydrogen separation and delay discharge theories are not general, that is why the search of cathode materials with the smallest hydrogen overpressure was performed. The solution was achieved via analysis of the double electric layer (DEL), where renewal of Fe³⁺ and TiO²⁺ occurs involving H⁺, Н⁰, Н¯, Н, H₂⁺ joins through relay mechanism. It is determined that ndm materials and their alloys, which have law electrical resistivity and are apt to hydrogen accumulation, they are stainless steel and niobium, are the best materials. Lorentz force is used during development of electrolyzer for convection diffusion increasing in the Ti₂(SO₄)₃ reductor synthesis. New optical Ti³⁺ control methods and creation of electrolysis computer control complex or ACS are offered during applying of synthesis on an automatic basis.
Федоренко, Андрій Олександрович. « Електрохімічний синтез титану(III) сульфату у технології виробництва титану(IV) оксиду ». Thesis, НТУ "ХПІ", 2015. http://repository.kpi.kharkov.ua/handle/KhPI-Press/17220.
Texte intégralThesis for granting the Degree of Candidate of Technical sciences in specialty 05.17.03 – Technical Electrochemistry. – National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2015. The thesis work is devoted to the improvement of the sulfate production technology of the pigment TiO₂ via renewal of ions in the aqua of Fe³⁺ and TiO²⁺ not Fe, Al, but electrochemically, what excludes the chromophor accumulation in fluid converter mouth, thereby guarantees the end products high quality. However currently the overpressure of hydrogen separation and delay discharge theories are not general, that is why the search of cathode materials with the smallest hydrogen overpressure was performed. The solution was achieved via analysis of the double electric layer (DEL), where renewal of Fe³⁺ and TiO²⁺ occurs involving H⁺, Н⁰, Н¯, Н, H₂⁺ joins through relay mechanism. It is determined that ndm materials and their alloys, which have law electrical resistivity and are apt to hydrogen accumulation, they are stainless steel and niobium, are the best materials. Lorentz force is used during development of electrolyzer for convection diffusion increasing in the Ti₂(SO₄)₃ reductor synthesis. New optical Ti³⁺ control methods and creation of electrolysis computer control complex or ACS are offered during applying of synthesis on an automatic basis.
Chi-WeiLee et 李其蔚. « A Study on the Preparation of Pearlescent Pigment from Metal Oxide Coated Synthetic Mica ». Thesis, 2016. http://ndltd.ncl.edu.tw/handle/tg49fa.
Texte intégral國立成功大學
資源工程學系
104
Pearlescent pigments generally refers to mica flakes coated with one or more layers of high refractive index metal oxide films, such as TiO2 and Fe2O3, so that’s presenting a pearl luster effect under the irradiation of light. Synthetic mica has the characteristics of good transparency, smooth surface, less cracks, reflecting strong, good gloss, which replace the natural mica pearlescent pigment used as the base material. In this study, pearlescent pigments were prepared by the liquid chemical deposition method in the presence of titanyl sulfate and ferric chloride as the titanium source and iron source and fluorphlogopite as the substrate to be coated with TiO2 and Fe2O3. The influence of hydrolysis condition and dosage on the chroma and hue were measured using sphere spectrophotometer. The coating state on the surface as examined by SEM. The chemical composition and crystal phase of coated components were analyzed by XRF and XRD. According to the results of experiments, the following conclusions are obtained: 1. The optimum pH value and temperature for TiO2 coating on mica are: pH=0, 95℃, calcined at 750℃ for 2hrs. The best chroma of the products obtained is the best. 2. For Fe2O3, at pH=3, it is able to obtain a dense and smooth coated layer.
Chyau, Jyh-Yuan, et 喬致源. « The Study on The Stability of Retouching Material : The Influence between Titanium White Pigment and The Vehicles of Synthetic Resin ». Thesis, 2013. http://ndltd.ncl.edu.tw/handle/hbpf78.
Texte intégral國立臺南藝術大學
博物館學與古物維護研究所
102
The study is researching about the influence of titanium white pigment in the vehicles for retouching materials. The overall plan will be conducted in progress by the references research, material analysis as well as the aging experiments. The samples, which are made from the handmade titanium white pigment in retouching materials, divide into three varied proportions: 10%, 20% and 30% respectively. Subsequently, each sample is added with three different types of vehicles of synthetic resin: Paraloid® B72、Laropal® A81 and MSA gel®. And further, the experiments is tried to test and compare with manual and commercial retouching color of titanium white in the effect of weathering. The result is illustrated the titanium white pigment has the both effects of photo-protection and photocatalysis in the vehicles of synthetic resin, Besides, the stability degree of vehicles and the proton of the titanium white pigment play the important role in these two reactions. Furthermore, the vehicle stability is higher the photocatalysis is less likely to appeal obviously and vice versa. The appropriate recipe of titanium white pigment content is 20% that has the best effectivity of photo-protection for vehicle; however, the photocatalysis may increase while its amount has more than 30%. In addition to, the commercial retouching color will take place deterioration of chemical structure and discolor in the aging, but the appearance and optics-property are still stability.