Polydimethylsiloxane latexes and copolymers by polymerization and polyaddition in miniemulsion

Landfester, Katharina; Pawelzik, U.; Antonietti, Markus

doi:10.1016/j.polymer.2005.07.080

Cited by 44 publications

(19 citation statements)

References 22 publications

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“…Preparation and application of hybrid latexes have been one of the most active research fields in literature due to easy tuning of end properties [8,26] Polysiloxane acrylic latexes bear similar benefits to acrylic latexes such as low viscosity, lower VOC, and high UV-resistance. In this study, different synthesis methodologies resulted in varying microstructures which influenced macroscopic properties.…”

Section: Discussionmentioning

confidence: 99%

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Optimization and comparison of polysiloxane acrylic hybrid latex synthesis methods

Bas

Soucek

2012

J Polym Res

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Two methods were used to prepare polysiloxanefunctionalized acrylic latexes via emulsion polymerization. Ethyl acrylate and 2-ethylhexyl acrylate were used in both methods as acrylic phase. In the first method, an acrylic core was prepared with addition of a coupling agent, 3-(trimethoxysilyl) propyl methacrylate, after which cyclic siloxane monomer (octamethylcyclotetrasiloxane) was reacted with the coupling agent. In the second method, a silaneterminated polysiloxane (H-PDMS) was reacted with ethylene glycol dimethacrylate, and then copolymerized with ethyl acrylate and 2-ethylhexyl acrylate in a batch emulsion polymerization. Particle size distribution and particle morphology were evaluated by using dynamic light scattering (DLS) and transmission electron microscopy (TEM), respectively. Core-shell morphology was observed in TEM for the first preparation method as proposed. After film formation, surface tension, morphology and dynamic mechanical properties were investigated. Stratification of polysiloxane was examined by Fourier-transform infrared spectroscopy (FT-IR) and energy dispersive X-ray (EDX). Energy dispersive X-ray data indicated that only the second preparation method had higher silicon content at film-air interface than film-substrate interface. In both methods, storage modulus and surface energy of latex films decreased after grafting polysiloxane.

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Section: Discussionmentioning

confidence: 99%

“…The acrylate-terminated polysiloxane was polymerized in miniemulsion [8]. Polysiloxanes bearing vinyl groups were employed as seeds in emulsion polymerization [6].…”

Section: Introductionmentioning

confidence: 99%

Optimization and comparison of polysiloxane acrylic hybrid latex synthesis methods

Bas

Soucek

2012

J Polym Res

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“…This makes PDMS hybrids 90 an interesting class of materials for low VOC coatings. To obtain a sufficient level of mechanical performance, the PDMS polymer is covalently bonded to a polymer with a higher T g , for which purpose both polyacrylates and polyurethanes have been reported.…”

Section: Various Other Hybridsmentioning

confidence: 99%

Polymer heterogeneity in waterborne coatings

Overbeek

2009

J Coat Technol Res

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An overview is presented of the progress in understanding polymer heterogeneity over the last 20 years and how this has contributed to the improvement of coatings. Solvent-based polymers are homogeneous in nature, since all polymeric materials tend to be dissolved in the same solvent mixture. This is different for most waterborne polymers, which tend to be present in a compartmentalized way. Most polymeric materials are present in particles, which are separated by the continuous aqueous phase. This gives excellent opportunities to create particle morphologies that form the basis for the film morphology after drying of the coating. This article gives an overview of the various types of heterogeneity which are accessible in waterborne polymers and will show how heterogeneity in the polymer can contribute to the solution of several persistent problems of the coating industry.

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“…Landfester et al made use of polydimethylsiloxane diol for the formation of polysiloxane-urethane latexes. [18] There are not many efforts in the literature to make use of other condensation polymers for block copolymer synthesis in miniemulsions. It would be of both academic and industrial interest for many different applications to combine polycondensates having hetero atoms in the backbone with polyvinyl polymers as block copolymers in water, because it would introduce new functionalities in vinyl polymer dispersions like (bio)degradability, biocompatibility, hydrophobicity, hydrophilicity, flexibility etc.…”

Section: Introductionmentioning

confidence: 99%

Use of Reactive and Functional Hydrophobes (Hydrophobins) in the Miniemulsion Polymerization of Styrene and Methyl Methacrylate

Agarwal

Grabe

2011

Macro Chemistry & Physics

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The successful use of multitasking polycaprolactone‐based hydrophobins for miniemulsion polymerization of model monomers like styrene and methyl methacrylate is demonstrated. These hydrophobins were synthesized in two steps – the synthesis of polyester diol (i.e., polycaprolactone diol) followed by polycondensation with an equimolar amount of azobis(cyanopentanoic acid dichloride). The hydrophobin, besides acting as a hydrophobe and initiator for the miniemulsion polymerization, also provided functionality; in this case degradability to the miniemulsion. An optimum ratio of hydrophobin to monomer was required for making stable dispersions of a small size (average diameter around 100 nm) with relatively high solid content (around 22%). magnified image

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Polydimethylsiloxane latexes and copolymers by polymerization and polyaddition in miniemulsion

Cited by 44 publications

References 22 publications

Optimization and comparison of polysiloxane acrylic hybrid latex synthesis methods

Optimization and comparison of polysiloxane acrylic hybrid latex synthesis methods

Polymer heterogeneity in waterborne coatings

Use of Reactive and Functional Hydrophobes (Hydrophobins) in the Miniemulsion Polymerization of Styrene and Methyl Methacrylate

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