• Macromolecular Research
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• v.15 no.1
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• pp.17-21
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• 2007

A series of new, vinyl sulfone-containing monomers was prepared by p-aminophenyl vinyl sulfone (1) with various acid chlorides such as adipoly chloride, terephthaloyl chloride and isophthaloyl chloride. Finally, tertiary amine-containing poly(amide-sulfone)s were prepared by the Michael-type addition polymerization using N,N-dimethylethylenediamine (DMEDA), p-phenylenediamine and piperazin. To evaluate the relevant properties for permselective membranes and enzyme substrate, various physical properties such as molecular weight, solubility, quaternization behavior and thermal properties were examined.

• Polymer(Korea)
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• v.36 no.4
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• pp.427-433
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• 2012

A series of poly(imide-aramid-sulfone)s with alternatingly introduced imide/aramid groups were prepared by reacting divinyl sulfone (DVS) and $N^1,N^4$-bis(4-(vinylsulfonyl)phenyl)terephthalamide (2) with pyromellitic diimide. Three model compounds, N-[2-(p-aminophnenylsulfonyl)ethyl]phthalimide (3), 2,2'-(2,2'-sulfonylbis(ethane-2,1-diyl))diisoindoline-1,3-dione (4), and N,N-bis(4-(2-(1,3-dioxoisoindolin-2-yl)ethylsulfonyl)phenyl)terephthalamide (5), resembling polymers were prepared with good yields by reacting p-aminophenyl vinyl sulfone, DVS, and 2 with phthalimide. Condensation polymerization was carried out by Michael-type addition reaction of the difunctional phthalimide group with the DVS group in the presence of tetrabutylammonium hydroxide (TBAH), resulting in poly(imide-aramid-sulfone)s 6-12 with moderate molecular weights and good yields. They were highly soluble in polar solvents such as N,N-dimethylformamide, dimethylsulfoxide, N-methylpyrrolidinone and tetrahydrofuran. The ratios of DVS/2 were 1/0, 3/1, 2/1, 1/1, 1/2, 1/3, and 0/1. Molecular weight and physical properties such as solubility, viscosity, and thermal properties of the polymers were examined.

• Journal of the Korean Wood Science and Technology
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• v.45 no.3
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• pp.297-307
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• 2017

This research was performed to use recycling wood fiber from waste MDF as raw materials for manufacturing of interior decorative accessories. Virgin fiber of Pinus rigida for manufacturing MDF and recycling fiber from manufactured MDF with virgin fiber were dyed by using reactive dyes (Bis-monochlorotriazine and Vinyl sulfone type), vat dyes (Anthraquinone type), direct dyes (Diazo type) such as red, yellow and blue, and natural dyes using gardenia or sappan wood, and they were examined to evaluate their dyeing properties and sunlight fastness. The hue of virgin fiber and recycling fiber were 4.2YR, and 4.4YR, respectively, which showed red-yellowish color. The recycling fiber looked a little darker than the virgin fiber, where $L^*$ values of the recycling fiber showed a little lower. Reactive, vat and direct dyes dyed well both the virgin and recycling fibers. The recycling fiber showed a little higher values of colour yield and a little lower in $L^*$, but it seemed that there was no significant difference. The Hue values of the recycling fiber and the virgin fiber dyed with sappan wood were 4.4YR and 4.0YR, showing no difference between/after dyeing. However the Hue values of the recycling fiber and the virgin fiber dyed with gardenia were 7.4YR and 6.9YR, respectively. Those values were much higher than the values of the fibers dyed with other chemical dyes. But the fibers dyed with gardenia showed poor sunlight fastness.

• Textile Coloration and Finishing
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• v.34 no.4
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• pp.234-240
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• 2022

Use of processed timber can help reduce environmental damage and the economic burden of resources (important problems with use of raw timber) and can meet the needs of various fields where the sensibility of raw timber is required. Veneer wood is positioned as a high-value-added product due to its luxury and beauty, and it is used in various fields as a building-related material, such as interior decoration, furniture, flooring, building interior materials, and lumber. Dyeing is necessary to enhance the aesthetic appearance of this pattern and to expand its use. Therefore, in this study, we compared and analyzed the dye ability of oak-patterned materials with reactive dyes, and evaluated their performance as interior materials. As a result, the oak pattern was dyed with 9 kinds of reactive dyes and a comparative analysis was performed. The most suitable conditions are 50℃, 2 hours, and 0.5% o.w.f. In addition, evaluating resilience to daylight, resilience to rubbing, fire resistance, and flame retardance, yielded results suitable for use as an interior material. In this study, the dyeability of veneer dyed under various conditions using reactive dyes was compared and analyzed the performance as an interior material was evaluated.