Hyperbranched waterborne polyurethanes

Park, J. H.; Bae, S. Y.; Kim, B. K.

doi:10.1007/s00289-012-0891-y

Cited by 16 publications

(10 citation statements)

References 26 publications

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“…Hyperbranched polymers have a characteristic molecular structure and many branched chains and cavities. These polymers have been studied extensively because of their unique three‐dimensional network structure, low viscosity, and low cost . In addition, hyperbranched polymers can be synthesized via molecular structure design to meet the extensive demands of the chemical industry .…”

Section: Introductionmentioning

confidence: 99%

Effects of the molecular structure on the vibration reduction and properties of hyperbranched waterborne polyurethane–acrylate for damping coatings

Zhang

Deng

et al. 2019

J of Applied Polymer Sci

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A series of hyperbranched waterborne polyurethane-acrylate (HWPUA) hybrid emulsions were prepared with isocyanate-terminated PU prepolymers, hyperbranched polyol (HP), and acrylate monomers. The HP as crosslinker was synthesized with isophorone diisocyanate, dimethylol propionic acid, and diethanol amine. The influence of the HP content on the chemical structure, particle size, morphology, damping properties, and thermal stability of the HWPUA hybrid emulsions and films were investigated by Fourier transform infrared spectroscopy, dynamic light scattering, transmission electron microscopy, dynamic mechanical analysis (DMA), and thermogravimetric analysis, respectively. The results show that the addition of HP obviously improved the damping and thermal properties of the HWPUA films. However, the addition of excessive HP had a detrimental impact on the performance of films. The DMA curves indicated that when the HP content was 1%, tan δ was 0.3 or greater and spanned the broadest temperature range, with a maximum value of 0.65. The HWPUA hybrid emulsions could be used as damping coatings.

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Section: Introductionmentioning

confidence: 99%

Effects of the molecular structure on the vibration reduction and properties of hyperbranched waterborne polyurethane–acrylate for damping coatings

Zhang

Deng

et al. 2019

J of Applied Polymer Sci

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“…Compared with solvent‐based polyurethanes, which contain large amount of volatile organic compounds, the WPUs dispersed in water are environmentally friendly and have a wide range of uses. WPUs are commonly used as adhesive and coating for textiles, wood, leather, and rubber . When WPUs are employed to prepare pigment ink for textile printing, there are still some shortcomings compared with direct dye, such as poor resistance to water, acid, and alkali; poor color brightness; and poor fastness to rubbing .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of blocked waterborne polyurethane with 3,5‐dimethylpyrazole for industrial application in digital inkjet printing

Yin

Wang

Chen³

et al. 2019

J of Applied Polymer Sci

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In this article, a series of blocked waterborne polyurethanes (BWPUs) were synthesized by isophorone diisocyanate, polyols, dimethylol butanoic acid (DMBA), and 3,5-dimethylpyrazole. BWPUs were applied to digital inkjet printing of textiles. The successful synthesis and deblocking of BWPU were confirmed by Fourier transform infrared spectroscopy and differential scanning calorimetry. The colorfastness was improved by deblocking the terminal NCO groups at 140 C, which could react with fiber. This article presented a characterization method of filtering rate to evaluate the fluency of inkjet printing. Besides, the digital microscope was used to investigate the pigment transferred to the white test cloth. In the end, we chose poly(ethylene glycol adipate) 2000 as the polyol, 1,4-butanediol as the chain extender, 1.6 as the NCO/OH molar ratio, and 4% as the mass fraction of DMBA.

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“…Hyperbranched polymers (HBPs), as a new kind of functional polymer material, have attracted much attention in recent years [1,2]. Compared with dendrimers, they can be conveniently prepared by polymerization via AB x -type monomers and couple-monomer methodology [3].…”

Section: Introductionmentioning

confidence: 99%

Unique viscosity mutation of multi-generation hyperbranched waterborne polyurethane

Liu

Sun

et al. 2014

Journal of Polymer Engineering

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Different generation hyperbranched polyurethanes (HBPUs) were synthesized through the A 2 +B'B 2 strategy. The molecular structures and viscosity were characterized by nuclear magnetic resonance (NMR) spectroscopy and gel permeation chromatography (GPC). The NMR results confirmed the formation of the branched units between the segments contained in the HBPU structure. The GPC with a four-capillary bridge design differential viscometer and the Ubbelohde viscometer showed a different viscosity. For the HBPUs, the viscosity first increased to higher values then decreased to lower values, and finally increased with increasing weight, which can be attributed to the spherical structure. The growth degree of HBPUs spherical structure depends on the forming hydrogen bonds; when the hydrogen bonds reach a certain degree, the spherical structure becomes compact.

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Hyperbranched waterborne polyurethanes

Cited by 16 publications

References 26 publications

Effects of the molecular structure on the vibration reduction and properties of hyperbranched waterborne polyurethane–acrylate for damping coatings

Effects of the molecular structure on the vibration reduction and properties of hyperbranched waterborne polyurethane–acrylate for damping coatings

Synthesis of blocked waterborne polyurethane with 3,5‐dimethylpyrazole for industrial application in digital inkjet printing

Unique viscosity mutation of multi-generation hyperbranched waterborne polyurethane

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