丁基碳酸酯-靛藍隱性顏料的製備與還原特性研究

吳朝仁

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丁基碳酸酯-靛藍隱性顏料的製備與還原特性研究

The Study on Preparation and Pigmentation of Tert-butoxycarbonyl Indigo

吳朝仁 , Masters　　Advisor：鄭文桐　　

繁體中文

有機顏料；靛藍顏料；隱性顏料；光酸發生劑；聚苯乙烯；環氧壓克力樹脂； indigo ； organic pigment ； latent pigment technology ； polystyrene, ； epoxy acrylate resin

Abstract │ Reference (43) │ Altmetrics

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Organic pigments could not dissolve in solvent as a result of hydrogen bonding effects. In this study, the BOC-protected pigment precursors (BOC-indigo) were prepared by using tert-butoxycarbonyl (BOC) groups to avoid the influences of hydrogen bonding. 
The effects of the particle sizes of indigo, polarity, and molecular volume of solvents on the yield of BOC-indigo were discussed. At first, the particle size of indigo decreased from 542.2 to 94.4 nm to make the yield of BOC-indigo increase from 81.3 to 89.8%, when indigo milling with glass beads in PGMEA. In addition, dichloromethane (CH2Cl2), tetrahydrofuran (THF), and propylene glycol monomethyl ether acetate (PGMEA) were all the solvents to prepare BOC-indigo. The results indicated that the highest yield of BOC-indigo was 97% in CH2Cl2, and the lowest one was in PGMEA. It showed that the yield of BOC-indigo increased with high polarity and low molecular volume of solvent. 
Furthermore, the pigmentation of BOC-indigo catalyzed by photogenerated acidic species in polymeric thin films of polystyrene or 39S was studied. The effects of the exposure energies and post exposure baking times on the pigmentation properties of BOC-indigo in the polymeric thin film were investigated to reveal the particle sizes and morphologies of the regenerated indigo in polymeric thin films. The exposure energy was more than 2.8 Jcm-2 at least to progress the pigmentation process. The regenerated indigos were dispersive well in polymeric thin films of polystyrene and epoxy acrylic resin, and their mean diameters were 1.1 μm and 2.9 μm, respectively. Finally, the mean diameters of regenerated indigo were 1.1μm as 10 minutes of PEB time, and they were 2.2 μm as 30 minutes of PEB time.

Reference ( 43 ) 〈TOP〉

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