Structure and performance of waterborne polyurethane-acrylate composite emulsions for industrial coatings: effect of preparation methods

Deng, Yunjiao; Zhou, Chao; Zhang, Qiuxue; Zhang, Mingyao; Zhang, Huixuan

doi:10.1007/s00396-019-04583-6

Cited by 17 publications

(12 citation statements)

References 39 publications

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“…The variety of possible monomer combinations for WPU synthesis was impressive. From the 138 reviewed papers, twenty-seven (27) used polytetramethylene glycol (PTMG) as polyol [26,. Polypropylene glycol (PPG) was the second most chosen polyol, being part of twenty two studies [12,23,32,40,52,59,65,[67][68][69][70][71][72][73][74][75][76][77][78][79][80][81][82], followed by poly(ethylene glycol) (PEG) (sixteen studies) [7,21,73,[83][84][85][86][87][88][89][90][91][92][93][94][95][96], poly(ε-caprolactone) (PCL) (thirteen studies) [6,20,31,52,59,[97][98]…”

Section: Literature Analysismentioning

confidence: 99%

“…There are three most used techniques for incorporating acrylic polymers into WPU dispersions: physical blending, emulsion polymerization, and IPN [26]. The physical blending method involves the independent preparation of the polyurethane and polyacrylate emulsions, followed by their simple mechanical mixing at a certain proportion.…”

Section: Influence Of the C=c Contentmentioning

confidence: 99%

“…There are several methods for preparing UV-WPU coatings, such as physical blending, emulsion polymerization, and the interpenetrating polymer network (IPN)-based technique [26][27][28][29][30]. The most conventional method is to end-chain polyurethane with a single-hydroxyl acrylate or to introduce a double bond from hydroxyl-terminated polybutadiene, or even to incorporate vinyl groups into the polymer [31].…”

Section: Introductionmentioning

confidence: 99%

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UV-curable waterborne polyurethane coatings: A state-of-the-art and recent advances review

Agnol

Dias

Ornaghi

et al. 2021

Progress in Organic Coatings

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Waterborne polyurethane coatings prepared by UV-induced photoreactions (UV-WPU) are becoming very attractive due to the increasingly stringent environmental demands. They were developed to replace solventbased polyurethanes in the coatings of wood, paper, plastics, metal, and glass, mainly because of their good physicochemical, rheological, and optical properties. Several UV-WPU formulations have been tested over the years, making their research substantial. However, no valuable review of this literature, focusing on the significant influencing factors in UV-WPU's manufacture, is available to date. This work aims to answer specific questions about the state of these materials' art, such as: "which monomers have been used most in UV-WPU synthesis?", "what type of photo-initiator has promoted the most efficient curing of the material?", "what additives or particles have been tested for composite UV-WPUs?", "which applications have UV-WPUs been directed to?", "what adaptations and technologies have already been tested to overcome the challenges of the process?", among others. As a result of a systematized bibliographic search in four databases, considering the period from January 2000 to July 2020, a total of one hundred and thirty-eight distinct and relevant articles on UV-WPUs were found. From this study, we hope to present a scientific source on the current state-of-the-art of UV-WPU synthesis, providing new combinations of raw materials and intelligent solutions, thus making material and industrial engineers able to mitigate the inconveniences of the process.

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Section: Literature Analysismentioning

confidence: 99%

Section: Influence Of the C=c Contentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

UV-curable waterborne polyurethane coatings: A state-of-the-art and recent advances review

Agnol

Dias

Ornaghi

et al. 2021

Progress in Organic Coatings

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“…The composite polymeric latexes with two or more distinct phases may have various compositions that lead to different properties, such as high and low glass transition temperatures, hydrophobicity, reactivity, etc., which affect the properties of the final polymer. Several studies were reported on the preparation of composite latexes for various purposes [22][23][24][25][26][27][28][29][30][31][32][33][34]. Among these studies Limousin et al [22] synthesized hybrid latex particles containing a hard, high T g seed (styrene(S)/acrylamide (AM), T g = 101 degrees C) and a low T g (methyl methacrylate (MMA)/butyl acrylate (BA)/styrene(S), T g = 13 degrees C) second phase polymer.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Different Soft Core/Hard Shell Ratios on the Coating Performance of Acrylic Copolymer Latexes

Cheaburu-Yılmaz

Darie-Niță²

2021

Polymers

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Core–shell acrylic copolymer latexes containing bio resourced itaconic acid with different compositions in respect with the core and shell segments were synthesized, characterized, and applied as coating materials for leather. The purpose of the study was to evidence the high coating performance of the latexes when the ratio of the core/shell differed from 90/10 to 50/50 wt %. The copolymers were prepared via emulsion copolymerization technique and the products were isolated and characterized by means of structure identity, thermal behavior (DSC and DMTA), coating performance. The particle size of the latexes varied from 83 to 173 nm with the variation of the ratio of core/shell segments. The influence of the composition of soft part and hard part was highlighted in the thermal and coating properties. The optimal composition giving the best coating performance could be determined as DS 60/40. Further increase of the hard segment content, resulted in decreased emulsion stability and the coating performance on the leathers. The use of itaconic acid seemed to increase the emulsion stability as well the adhesion of the latexes to the substrate.

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“…Various efforts have been made to improve the mechanical properties of polyacrylate waterborne coatings, such as copolymerization with polyurethane [6][7][8][9][10], silicone modification [11], treatment with nanoparticles [12][13][14], epoxy modification [15], microemulsion polymerization, microemulsion hybrid polymerization [16,17], and other methods [18,19]. The hardness values and mechanical properties of the obtained coatings were improved by these methods, but nonrenewable and nondegradable petrochemical-based materials were consumed.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of a Soy Protein Isolate–Grafted–Acrylate (SGA) Copolymer Used for Wood Coatings

Feng

Wang

et al. 2020

Polymers

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Changing demands have led to rapidly growing interest in the modification of waterborne wood coatings. To improve the performance of a polyacrylate wood coating, especially the strength, hardness, and abrasion resistance of the film, a soy protein isolate–grafted–acrylate (SGA) copolymer was prepared in an aqueous solution with ammonium persulfate (APS) as an initiator and sodium pyrosulfite (SPS) as an unfolding agent for the soybean protein isolate (SPI). The emulsion was characterized using transmission electron microscopy, Fourier-transform infrared spectroscopy (FTIR), and a particle size analyzer. Furthermore, the mechanical properties of the film, including the tensile strength, elastic modulus, elongation at break, and pencil hardness, were measured. The results showed that the glass transition temperature of the polyacrylic resin decreased to 35 °C after the SPI grafting. The elastic modulus of the film increased from 0.317 to 46.949 MPa, and the elongation at break decreased from 453.133% to 187.125% as the addition of SPI varied from 0 to 4 g, respectively. The pencil hardness of the wood coating increased from HB to 3H. This paper proposes a feasible route for the utilization of SPI for wood coatings.

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Structure and performance of waterborne polyurethane-acrylate composite emulsions for industrial coatings: effect of preparation methods

Cited by 17 publications

References 39 publications

UV-curable waterborne polyurethane coatings: A state-of-the-art and recent advances review

UV-curable waterborne polyurethane coatings: A state-of-the-art and recent advances review

The Effect of Different Soft Core/Hard Shell Ratios on the Coating Performance of Acrylic Copolymer Latexes

Mechanical Properties of a Soy Protein Isolate–Grafted–Acrylate (SGA) Copolymer Used for Wood Coatings

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