Waterborne Polyurethane–Polyacrylic Ester Hybrid Emulsion for Humidity-Controlling Coatings

Zhang, Shao-Fei; Liu, Fa-Rui; He, Yufeng; Wang, Rong‐Min; Song, Pengfei; Ma, Li

doi:10.1007/s13369-013-0838-0

Cited by 21 publications

(6 citation statements)

References 20 publications

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“…[3], until the nineties in practice only blends of APUD and AAD were commercially available and their properties were claimed to combine properties of both polymers, specifically when they were co-crosslinked [4]. Even at present the reports dealing with simple blends of APUD and AAD can be still found in the literature [5]. Probably the first communication where the properties of true hybrid polyurethane-acrylic dispersions (APUAD) were described was presented at a major international conference [6] and two years later the relevant paper was published [7].…”

Section: Aqueous Polyurethane-acrylic Dispersionsmentioning

confidence: 99%

Developments in aqueous polyurethane and polyurethane-acrylic dispersion technology. Part II. Polyurethane-acrylic dispersions and modification of polyurethane and polyurethane-acrylic dispersions

Kozakiewicz

2016

Polimery

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Part I of the review that concerns the developments in aqueous polyurethane dispersions (APUD) and aqueous polyurethane-acrylic dispersions (APUAD) technology was recently published. In the present paper (constituting Part II of the review) synthesis and characterization of aqueous polyurethane-acrylic dispersions (APUAD) which have hybrid particle structure and produce films and coatings exhibiting much better properties than those produced from blends of APUD and acrylic polymer dispersions are reviewed based on recent literature data. Possibilities of crosslinking the films and coatings produced from APUD and APUAD and of obtaining filled composites, specifically nanocomposites, from those dispersions are also demonstrated, and currently reported applications of those dispersions are briefly summarized. The most important developments and areas where further research may still be required are suggested with regard to synthesis and characterization of APUAD as well as to crosslinked and filled systems involving APUD or APUAD.

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Section: Aqueous Polyurethane-acrylic Dispersionsmentioning

confidence: 99%

Developments in aqueous polyurethane and polyurethane-acrylic dispersion technology. Part II. Polyurethane-acrylic dispersions and modification of polyurethane and polyurethane-acrylic dispersions

Kozakiewicz

2016

Polimery

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“…The stress-strain studies were done on MTS-4/M universal testing machine (Sintech -MTS System Corporation, USA) according to CSN EN ISO 527-3 at a tension rate of 10 mm/min at 23 °C. The specimen size used for the tensile tests was 50 × 5 × 0.75 mm 3 .…”

Section: Coating Preparation and Evaluationmentioning

confidence: 99%

“…The swollen films were carefully removed from water, and water from the film surface was removed by touching the polymer with a filter paper. For each sample, three specimen of the approximate dimensions 20 × 20 × 0.75 mm 3 were tested.…”

Section: Coating Preparation and Evaluationmentioning

confidence: 99%

Determination of molar mass of structured acrylic microgels: effect of molar mass on coating properties of self-crosslinking latexes

et al. 2016

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The film formation process of emulsion polymers may be affected seriously by introducing the self-crosslinking chemistry. In order to possess increased final coating properties, a balance between chemical crosslinking and polymer chain mobility resulting in sufficient inter-diffusion and entanglement of polymer chains during the particle coalescence stage has to be maintained, which can be tuned significantly by varying the molar mass of emulsion copolymers. The self-crosslinking latexes of coreshell microgel particles were synthesized by the emulsion polymerization of methyl methacrylate and butyl acrylate as main monomers. The particle core was slightly crosslinked using allyl methacrylate, to prevent the copolymers forming the core phase from migration into the shell phase. For inter-particle crosslinking, diacetone acrylamide was copolymerized into the shell layer of latex particles to provide sites for subsequent reaction with adipic acid dihydrazide. The molar mass of copolymers forming the shell layer was systematically reduced by isooctyl 3-mercaptopropionate included in the synthesis of shell layers. The molar mass distribution of latex particles was determined using size exclusion chromatography (SEC) and asymmetric flow field flow fractionation (A4F), respectively, both separation methods being coupled with a multi-angle light scattering (MALS) detector. Whereas SEC-MALS was 2 found to be convenient for the characterization of low molar mass shell copolymers without crosslinked structure, A4F-MALS was proved as a very efficient technique for the characterization of high molar mass copolymers and core-shell microgels. The results described empirically the effects of molar mass of the shell layer copolymer on influencing the end-use properties of coatings.

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“…Currently, the self-crosslinkable acrylic latexes based on diacetone acrylamide (DAAM) and adipic acid dihydrazide (ADH) crosslinking system have been studied extensively [15,16,17,18,19,20]. The reaction between the carbonyl functionalities of DAAM and hydrazine groups of ADH proceeds rapidly at ambient temperature and is favored by the loss of water and the simultaneous decrease in pH arising from the evaporation of ammonia or amines during the film forming process [21].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Molecular Structure of Emulsion Acrylic Microgels: Exploring the Impact of Molar Mass on Coating Properties of Self-Cross-Linkable Latexes

Machotová

Zgoni

Podzimek

et al. 2016

Polymer-Plastics Technology and Engineering

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Self-crosslinkable latexes of coreshell microgel particles were synthesized by the emulsion polymerization of acrylic monomers. The molar mass of copolymers forming the shell layer was gradually reduced by isooctyl 3-mercaptopropionate included in the synthesis of the shell layers. The molar mass distribution of latex particles was determined using size exclusion chromatography and asymmetric flow field flow fractionation, respectively, both separation methods being coupled with a multi-angle light scattering detector. The results confirmed theoretical predictions and described empirically the effects of molar mass of the shell layer copolymer on decreasing the minimum film-forming temperature and influencing the end-use properties of coatings.2

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Waterborne Polyurethane–Polyacrylic Ester Hybrid Emulsion for Humidity-Controlling Coatings

Cited by 21 publications

References 20 publications

Developments in aqueous polyurethane and polyurethane-acrylic dispersion technology. Part II. Polyurethane-acrylic dispersions and modification of polyurethane and polyurethane-acrylic dispersions

Developments in aqueous polyurethane and polyurethane-acrylic dispersion technology. Part II. Polyurethane-acrylic dispersions and modification of polyurethane and polyurethane-acrylic dispersions

Determination of molar mass of structured acrylic microgels: effect of molar mass on coating properties of self-crosslinking latexes

Characterization of Molecular Structure of Emulsion Acrylic Microgels: Exploring the Impact of Molar Mass on Coating Properties of Self-Cross-Linkable Latexes

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