Transformation of waterborne hybrid polymer particles into films: Morphology development and modeling

Goikoetxea, Monika; Reyes, Yuri; Alarcón, Carolina de las Heras; Minari, Roque Javier; Beristain, Itxaso; Paulis, Marı́a; Barandiaran, Marı́a J.; Keddie, Joseph L.; Asúa, José M.

doi:10.1016/j.polymer.2012.01.021

Cited by 30 publications

(22 citation statements)

References 49 publications

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“…In this scenario, free casein acts as a mobile phase and protein migration may occur during film formation, causing the generation of aggregates [33]. AFM phase image of the material with 25 pphm shows that the film surface is principally constituted by soft acrylic particles with some domains of hard casein (Fig.…”

Section: Film Morphologymentioning

confidence: 99%

Waterborne acrylic–casein latexes as eco-friendly binders for coatings

Picchio

Passeggi

Barandiaran

et al. 2015

Progress in Organic Coatings

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Section: Film Morphologymentioning

confidence: 99%

Waterborne acrylic–casein latexes as eco-friendly binders for coatings

Picchio

Passeggi

Barandiaran

et al. 2015

Progress in Organic Coatings

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“…Here, the lighter AC regions are the core and the darker PU domains are the shell. 33 In this situation, systems like irregular hemispheres can be achieved. A typical neutralized emulsion latex is shown in Figure 6(b), the image shows that the neutralized emulsion particles (the average size is about 0.5 lm) tend to become much larger than the unneutralized ones.…”

Section: Article Wileyonlinelibrarycom/appmentioning

confidence: 99%

Preparation, properties, and applications of acrylic–polyurethane hybrid emulsions in extinction electrophoresis

Yang

Gan

et al. 2013

J of Applied Polymer Sci

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Aqueous acrylic-polyurethane hybrid emulsions (PUA) were fabricated by semibatch emulsion copolymerization using a mixture of acrylic (AC) monomers in the presence of an isocyanate terminated polyurethane (PU). The effects of PU content on the morphology of the hybrid emulsions and film properties were here investigated in detail using FT-IR, UV, TEM, and SEM. TEM images clearly showed that hybrid emulsions exhibited a core-shell structure before neutralization. However, after neutralization with N,N-dimethylethanolamine, the typical particles exhibited phase inversion, producing particles with irregular hemispheres shapes and diameters about 0.5 lm. SEM images showed that the film surface became rougher as PU content increased, peaking at 10 wt %, the gloss of this film was 23.1 (60 ). The UV transmittance spectra of the PUA hybrid emulsion within a wavelength range 700-200 nm decreased as PU content increased. This was consistent with the changes in the surface roughness of the film. Electrophoresis took place on an aluminum alloy surface and the product was dried at 120 C. The film exhibited excellent mechanical performance due to curing reaction between the N@C@O group on PU and hydroxyl group on the AC copolymer. The gloss of the film was found to be as low as 4.0 after electrophoresis testing. These films may be useful in practical extinction electrophoresis. V C 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40078.

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“…Heterogeneous polymer-polymer and polymer-inorganic particles have the possibility of combining the positive properties of each phase, avoiding their drawbacks and have found applications as coatings, adhesives, impact modifiers and medical diagnostics. [1][2][3][4][5][6][7][8][9][10][11] Structured polymer particles with different morphologies can be synthesized by chemical and physical methods. The choice of a specific technique depends on the final properties of interest of the material.…”

Section: Introductionmentioning

confidence: 99%

“…[13][14][15][16][17][18][19][20][21][22][23][24][25][26] Several authors reported theoretical approaches aimed at predicting the particle morphology, but most of the methods are based on two limiting assumptions: either the polymer chains do not move from the point that they are formed [25,[27][28][29][30][31] or the equilibrium morphology is attained instantaneously. [11,[32][33][34][35][36][37][38][39][40] There are only few works in the literature that take into account all relevant kinetic and thermodynamic effects. Gonzalez-Ortiz et al [41][42][43] developed a model to predict particle morphology that accounted for phase separation between Polymer 1 and Polymer 2 that leads to cluster nucleation, polymerization in both clusters and matrix (Polymer 1 rich area), polymer diffusion between matrix and clusters and cluster aggregation.…”

Section: Introductionmentioning

confidence: 99%

A new approach for mathematical modeling of the dynamic development of particle morphology

Hamzehlou

Leiza

Asúa

2016

Chemical Engineering Journal

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Please cite this article as: S. Hamzehlou, J.R. Leiza, J.M. Asua, A new approach for mathematical modelling of the dynamic development of particle morphology, Chemical Engineering Journal (2016), doi: http://dx. AbstractA new model for the dynamic evolution of the morphology of polymer-polymer latex particles has been developed. This model overcomes the limitations of the existing methodologies that were only able to provide the morphology of a single particle, which is only a restricted view of the real system that contains a distribution of particle morphologies. Taking into account the relevant kinetic and thermodynamic effects, the new model calculates the distribution of morphologies for the whole population of polymer particles with less computational effort than that needed by the previous models to calculate the morphology of a single particle. The model was validated by fitting the evolution of particle morphology of composite particles during polymerization of methyl methacrylate on a polystyrene seed. Furthermore, the ability of the model to predict the evolution of the particle morphology for different cases was explored.

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Transformation of waterborne hybrid polymer particles into films: Morphology development and modeling

Cited by 30 publications

References 49 publications

Waterborne acrylic–casein latexes as eco-friendly binders for coatings

Waterborne acrylic–casein latexes as eco-friendly binders for coatings

Preparation, properties, and applications of acrylic–polyurethane hybrid emulsions in extinction electrophoresis

A new approach for mathematical modeling of the dynamic development of particle morphology

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