Effects of sulfonated polyol on the properties of the resultant aqueous polyurethane dispersions

Lee, Hsun-Tsing; Wu, Sheng-Yen; Jeng, Ru‐Jong

doi:10.1016/j.colsurfa.2005.10.034

Cited by 62 publications

(28 citation statements)

References 44 publications

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“…In contrast, the FTIR spectrum of PG differs from that of GO. The intensities of absorption peaks corresponding to oxygen functional groups are weakened, which are similar to the XPS results; and the new characteristic peaks corresponding to the sulfonic acid group appear at 1205 cm −1 and 1071 cm −1 . These results further demonstrate that the PPS is successfully grafted onto the GO surfaces and oxycompound groups are removed during chemical reduction.…”

Section: Results and Discusssionsupporting

confidence: 81%

Electrochemical and anti‐corrosion behaviors of water dispersible graphene/acrylic modified alkyd resin latex composites coated carbon steel

Zhu

Wang

et al. 2016

J of Applied Polymer Sci

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A type of water dispersible graphene (PG) has been synthesized by nucleophilic ring‐opening reaction of the primary amine group in 3‐(1‐(2‐aminopropoxy) propan‐2‐ylamino) propane‐1‐sulfonate sodium (PPS) with epoxy groups on the basal plane of graphene oxide (GO), followed by in situ reduction with hydrazine hydrate. The PG is employed as nanoscale reinforcement fillers in waterborne acrylic modified alkyd resin (AMAR) coatings. The stability and corrosion resistance of the waterborne PG/AMAR nanocomposite coatings are investigated. SEM and stability of nanocomposite indicated that the PG sheet is uniformly distributed in AMAR nano‐emulsion. Potentiodynamic polarization and electrochemical impedance spectroscopy studies indicated that the PG/AMAR composite coatings exhibit higher corrosion resistance in simulated body fluid (SBF) compared with pure AMAR coatings and GO/AMAR coatings. In addition, the stability and corrosion resistance of the composite materials reach optimum when the PG content is 1%. PPS functionalized graphene (PG) displays prospective application in anticorrosion field. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44445.

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Section: Results and Discusssionsupporting

confidence: 81%

Electrochemical and anti‐corrosion behaviors of water dispersible graphene/acrylic modified alkyd resin latex composites coated carbon steel

Zhu

Wang

et al. 2016

J of Applied Polymer Sci

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“…The charge number of ion as well as thickness of electric double layer, hydrodynamics volume of particle, all increased when the carboxyl group content increased. The runningresistance of particle increase led to the emulsion's viscosity increase [6] .On the second hand, the particle's hydrophilicity improved when the carboxyl group content increased, and the particle diameter increased accordingly. Thus the total number of the particles increase causes the hydrophilicity improcement.…”

Section: The Carboxyl Group Content's Effectmentioning

confidence: 98%

A Solventless Waterborne Polyurethane Emulsifying Investigation

Guo

Wang

et al. 2007

2007 1st International Conference on Bioinformatics and Biomedical Engineering

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A solventless waterborne polyurethane emulsion is synthesized by prepolymerization. The effecting factors including the ratio of isocyanate content to hydroxyl group's (-NCO/-OH), the reaction temperature and the carboxyl group content (-COOH %) on target prepared emulsion's viscosity; particle diameter and the water absorption are experimentally investigated during the reaction processes. The results show that:(1) the emulsion viscosity and water absorption decrease when the -NCO/-OH ratio (the ratio of isocyanate content to hydroxyl groups) increases, but the particle diameter increases. (2) the reaction rate increases when the temperature is higher, but the side reaction is more easily arisen. (3) both the emulsion viscosity and water absorption increase but the particle diameter decrease if the carboxyl content (-COOH %) is bigger. (4) the properties of emulsion and film after coating are finer if glycol as the chain extender.

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“…[27][28][29] They show great surface activity and have created great interest for nearly two decades. [30][31][32][33][34][35] Nonionic polyurethane surfactants show much lower critical micelle concentrations (CMC) than ionic ones and good performance in solubilization of hydrophobes. Moreover nonionic polyurethane surfactants are not appreciably affected by pH and type of electrolyte.…”

Section: Introductionmentioning

confidence: 99%

Monitoring Micelle Formation of Nonionic Polyurethane in Water by Fluorescence Spectrophotometry

Zheng¹,

Lu²

2014

Journal of Macromolecular Science, Part B

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A series of nonionic polyurethanes were dissolved in water and their miceller selfassembly behaviors were characterized by aid of a fluorescence spectrophotometer. Fluorescence and resonance light scattering techniques were carried out for characterizing the micelles, and information such as aggregation number, critical micelle concentration, micropolarity, and micelle volume change was obtained. The micropolarity decreased as the aggregation number increased. The nonionic polyurethane micelle volume with two long ethoxyl chains per polyurethane molecule was smaller than the one with short chains, even with the same aggregation number, and was less polar. The micropolarity depended on both the aggregation number and the volume of a single micelle.

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Effects of sulfonated polyol on the properties of the resultant aqueous polyurethane dispersions

Cited by 62 publications

References 44 publications

Electrochemical and anti‐corrosion behaviors of water dispersible graphene/acrylic modified alkyd resin latex composites coated carbon steel

Electrochemical and anti‐corrosion behaviors of water dispersible graphene/acrylic modified alkyd resin latex composites coated carbon steel

A Solventless Waterborne Polyurethane Emulsifying Investigation

Monitoring Micelle Formation of Nonionic Polyurethane in Water by Fluorescence Spectrophotometry

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