Effect of the concentration of dye on the physical property of dye‐based polyurethane ionomer

Lee, J. J.; Chi, Z. K.; Kuo, Y. M.; Chao, D. Y.

doi:10.1002/app.1995.070570813

Cited by 25 publications

(14 citation statements)

References 4 publications

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“…Anthraquinone-based polyester and polyamides have been studied [247][248][249][250][251][252][253][254][255]. In the case of PUs, only a few reports are available [256][257][258].…”

Section: Polymeric Colorantsmentioning

confidence: 99%

Synthesis, Physicochemical Characterization, and Applications of Polyurethane Ionomers: A Review

Ramesh¹,

Kannan²,

Mahesh³

et al. 1998

Journal of Macromolecular Science, Part C: Polymer Reviews

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“…Anthraquinone-based polyester and polyamides have been studied [247][248][249][250][251][252][253][254][255]. In the case of PUs, only a few reports are available [256][257][258].…”

Section: Polymeric Colorantsmentioning

confidence: 99%

Synthesis, Physicochemical Characterization, and Applications of Polyurethane Ionomers: A Review

Ramesh¹,

Kannan²,

Mahesh³

et al. 1998

Journal of Macromolecular Science, Part C: Polymer Reviews

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“…A 0.034 equivalent of triethylamine was then reacted with this NCO-terminated PU prepolymer in 80g acetone to form a quaternized NCO-terminated PU prepolymer. [2][3][4][5][6][7][8] This quaternized NCO-terminated PU prepolymer further reacted with hydrolytes of dimethyldimethoxysilane (0.01 equiva-lent) or dimethyldiethoxysilane (0.01 equivalent), and 170 g water was then added to form the siloxane-based PU ionomers with approximately 17.5% solids. After removing the acetone by blowing the siloxane-based PU ionomer solution out in vacuo, this ionomer aqueous solution with 17.5% solids was poured into a polypropylene dish to 1 mm dish thickness and dried in an oven at 60°C.…”

Section: Methodsmentioning

confidence: 99%

Study of oxygen‐permeable polyurethane ionomer. II

Wang

Chao

2000

J. Appl. Polym. Sci.

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Oxygen-permeable polyurethane ionomers with dimethyldimethoxysilane or dimethyldimethoxysilane have been successfully synthesized at our lab, and their ionomer structures have been proven by infrared spectra. In our previous paper, 1 it was found that the amount of oxygen permeated through the film made by a dimethyldichlorosilane polyurethane ionomer increased with increasing the concentration of dimethyldichlorosilane. Presently, our experimental results also indicate that use of dimethyldimethoxysilane or dimethyldiethoxysilane in preparing polyurethane ionomers does substantially raise the amount of oxygen diffusing into the films made by these ionomers. These results suggest that use of dimethyldichlorosilane, dimethyldimethoxysilane, or dimethyldiethoxysilane, with strong hydrophilic property, in making polyurethane ionomer will give better oxygen permeability of siloxane-based polyurethane ionomers. It is interesting to point out that both tensile strength and the elongation of a siloxane-based polyurethane ionomer film become weaker as the concentration of dimethyldimethoxysilane or dimethyldiethoxysilane increases. This may be the result of intramolecular interaction of ionomer molecules, coupled with the reduction of the formation of hydrogen bonding between ionomer-ionomer molecules and between ionomer-water molecules.

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“…It is used widely in manmade leather, fibers, and adhesives. [1][2][3][4][5][6][7][8] Colored PU leather is mostly made of nonwoven fabrics coated with a mixture of a pigment and a PU resin. The color is dull, and there is a lack of brightness and poor rubbing resistance.…”

Section: Introductionmentioning

confidence: 99%

Alkali reduction and reactive dye dyeing of T/N nonwoven fabrics dipped into silicon‐containing, water‐borne polyurethane

Wang

Tzai

Chang

2005

J of Applied Polymer Sci

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Two series of anionic water-borne polyurethanes with alkali resistance and covalent bonds of a reactive dye were synthesized with different molar ratios of poly(tetramethylene glycol) (PTMG). They were classified with respect to PTMG 1000 and PTMG 2000. The fiber blends of polyester/nylon nonwoven fabrics were dipped into siliconcontaining, water-borne polyurethane and squeezed to an 80% pickup ratio. Finally, the manmade leather was treated with alkali reduction and dyed with a reactive dye. The alkali reduction and the thermal, mechanical, and dyeing properties of the manmade leather were studied. For alkali reduction, different ratios of NaOH and Na 2 CO 3 concentrations were used. Na 2 CO 3 was used because of its better spreading and buffering properties. The softness and breaking load were measured and related to the weight reduction. For the dyeing properties, a reactive dye with vinyl sulfone groups was found to bond with the OH group of waterborne polyurethane by covalent bonding. On the basis of alkali reduction, a mixture of NaOH and Na 2 CO 3 with a concentration ratio of 0.1N/0.2N could lead to better softness and alkali reduction of leather. For the mechanical properties, leather of the PTMG 1000 series showed a higher breaking load than leather of the PTMG 2000 series. However, less elongation in the PTMG 1000 series resulted. Differential scanning calorimetry showed an endothermic peak at 50 -100°C. This indicated that the glass-transition temperature of the hard segment decreased with an increasing amount of the soft segment in leather; meanwhile, both the glass-transition temperature of the soft segment and the melting temperature of the hard segment also decreased as the content of the soft segment increased. For the dyeing properties, the reactive blue dye could reach up to 96.1% dye uptake in the polyurethane part of the leather. Moreover, the washing fastness could be graded as high as 4 -5, and the light resistance was also graded to 4 -5, in the dyed leather.

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Effect of the concentration of dye on the physical property of dye‐based polyurethane ionomer

Cited by 25 publications

References 4 publications

Synthesis, Physicochemical Characterization, and Applications of Polyurethane Ionomers: A Review

Synthesis, Physicochemical Characterization, and Applications of Polyurethane Ionomers: A Review

Study of oxygen‐permeable polyurethane ionomer. II

Alkali reduction and reactive dye dyeing of T/N nonwoven fabrics dipped into silicon‐containing, water‐borne polyurethane

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