Particle size and shell composition as effective parameters on MFFT for acrylic core–shell particles prepared via seeded emulsion polymerization

Hasanzadeh, Iraj; Mahdavian, Ali Reza; Salehi‐Mobarakeh, Hamid

doi:10.1016/j.porgcoat.2014.06.018

Cited by 19 publications

(18 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The conventional emulsion samples were prepared according to the instruction given in Table . The ingredients ratio and polymerization procedure were optimized according to our previous studies . The initial charge of reactor containing initiator, surfactants, and buffer was dissolved in water and the obtained solution was added into the reactor, to remove dissolved oxygen, it was mechanically stirred at 400 rpm under argon purge.…”

Section: Methodsmentioning

confidence: 99%

Ultrasound-assisted emulsion polymerization of poly(methyl methacrylate-co-butyl acrylate): Effect of initiator content and temperature

2015

Self Cite

View full text Add to dashboard Cite

In this study, we propose an efficient method for preparation of large scale, monodisperse poly(methyl methacrylate-co-butyl acrylate) latexes by application of the low power ultrasound irradiation. The effect of polymerization temperature and initiator concentration on the polymerization nature, particle size, and particle size distribution were investigated. Results indicated that the ultrasound pulses in the first minutes of polymerization increase instant free radical to monomer ratio as well mixing efficiency which led to higher monomer conversion, improved polymerization rate (especially at first 15 min of the reaction), and remarkable decrease in molecular weight distribution. Transmittance electron microscopy (TEM) and dynamic light scattering (DLS) revealed that the particle size and particle size distribution were significantly affected, particle size decreased, and more uniform particles were obtained. Dynamic mechanical thermal analysis also showed that the initiator concentration affected glass transition temperature (T g ) of the final copolymers and in the case of ultrasound-assisted emulsion polymerization T g was in a very good agreement with theoretical predictions for copolymerization. POLYM. ENG. SCI., 56:214-221, 2016.

show abstract

Section: Methodsmentioning

confidence: 99%

Ultrasound-assisted emulsion polymerization of poly(methyl methacrylate-co-butyl acrylate): Effect of initiator content and temperature

2015

Self Cite

View full text Add to dashboard Cite

show abstract

“…70 Several studies have demonstrated that the core-shell morphology of the binder particles can help improve the final coating performance without hurting the film formation. 73,74 However, how the binder morphology is transformed during film formation is not well understood. In another report, instead of focusing on the binder morphology, the authors put forward a model system, trying to link the final coating film morphology to the improved coating performance.…”

Section: Coating Materials Designmentioning

confidence: 99%

Design colloidal particle morphology and self-assembly for coating applications

et al. 2017

View full text Add to dashboard Cite

The progressive replacement of organic solvent-based coatings by waterborne latex polymer coatings has substantially renovated the coating industry, and generated huge environmental and health benefits. Today, on top of the continuing demand for higher performance and lower costs, the coating industry faces tighter regulation and higher sustainability standards. In addition, the new waterborne coatings have created unique opportunities and challenges in terms of fundamental understanding and research development. To address these challenges, polymer latex binders with diverse particle morphologies have been developed to improve coating performance. Furthermore, colloidal self-assembly has been utilized to help manufacturers make better paint with less cost. In this report, we review the recent progress in both fundamental study and industrial application in the context of developing new generation architectural coating materials. We introduce the basic concepts in coating materials and showcase several key technologies that have been implemented to improve coating performance. These technologies also represent the most important considerations in architectural coating design.

show abstract

“…In this case, unlike latex blends, a more homogeneous distribution of the two phases throughout the polymer film is acheived . One common approach is to use particles with a core–shell morphology consisting of a hard core, which reinforces the film, and a soft shell, which allows for film formation at acceptable temperatures . Such core–shell morphology is relatively easily synthesized by seeded emulsion polymerization, where the seed forms the core of the final particle .…”

Section: Introductionmentioning

confidence: 99%

“…Such core–shell morphology is relatively easily synthesized by seeded emulsion polymerization, where the seed forms the core of the final particle . However, while such particles containing a hard core and a soft shell lead to an improvement in mechanical strength of the resulting film, the improvement is not substantial due to the lack of interaction among the hard domains that was a key component of the optimum structure proposed by Geurts et al …”

Section: Introductionmentioning

confidence: 99%

Soft core–hard shell latex particles for mechanically strong VOC‐free polymer films

Limousin

Ballard

Asúa

2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

Polymer films cast from aqueous polymer dispersions typically suffer from an inherent lack of mechanical strength when compared to their solvent-borne counterparts. This drawback can be overcome by the use nanostructured hybrid particles that contain both a hard and soft phase. In this work, we demonstrate the use latex particles consisting of a soft core with a multilobed hard shell synthesized by seeded semicontinuous emulsion polymerization with the aim of maximizing the interconnectivity of the hard phase in the resulting polymer film, thus generating films with improved mechanical properties. Films with a minimum film formation temperature (MFFT) close to that of the soft phase are formed while obtaining a Young's modulus up to 4.5 times higher that of a standard homogeneous latex particle. The effect of annealing temperature on film morphology is also investigated, clearly demonstrating that a marked difference in mechanical properties is observed when a percolating network of the hard phase within the film is obtained.

show abstract

Particle size and shell composition as effective parameters on MFFT for acrylic core–shell particles prepared via seeded emulsion polymerization

Cited by 19 publications

References 30 publications

Ultrasound-assisted emulsion polymerization of poly(methyl methacrylate-co-butyl acrylate): Effect of initiator content and temperature

Ultrasound-assisted emulsion polymerization of poly(methyl methacrylate-co-butyl acrylate): Effect of initiator content and temperature

Design colloidal particle morphology and self-assembly for coating applications

Soft core–hard shell latex particles for mechanically strong VOC‐free polymer films

Contact Info

Product

Resources

About