Particulate ionomer films prepared from dispersions of crosslinked polymer colloids: A structure–property study

Pinprayoon, Orawan; Saiani, Alberto; Groves, Robert; Saunders, Brian R.

doi:10.1016/j.jcis.2009.03.081

Cited by 16 publications

(17 citation statements)

References 28 publications

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“…The differential asymmetric and symmetric stretching induced the adsorption of stearic acid ions to the surface of the ZnO nanorods. Pinprayoon et al21 found that Zn 2+ ions formed ionic crosslinks with carboxylate groups. Therefore, it was possible that stearic acid molecules were attached to the ZnO nanorods by single‐molecular‐layer adsorption through the SAM process.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of superhydrophobic wood surfaces

Wang

Piao

Lucas

2010

J of Applied Polymer Sci

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Superhydrophobic films were developed on wood substrates with a wet chemical approach. Growth of zinc oxide (ZnO) nanorods was found differentially in the cross-sectional walls and inner lumenal surfaces. The surface roughness of the prepared films on the inner lumenal surface conformed to the Cassie-Baxter wetting model, whereas the roughness across the microsurface of the cell wall was in conformity with the hydrophobic porous wetting model. The space between the ZnO nanorods and the microstructure of the wood surface constituted the nanoscale and microscale roughness of the ZnO nanofilm, respectively. The water contact angle of the prepared wood surfaces was up to 153.5 . In the prepared films, monolayers of stearic acid molecules were self-assembled on the ZnO nanorods, which in turn, were attached to the wood surface via dimeric bonds.

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Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of superhydrophobic wood surfaces

Wang

Piao

Lucas

2010

J of Applied Polymer Sci

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“…Previously, we explored the structure-property relationships for low modulus Bd-based coreshell nanostructured ionomer films and probed methods for controlling their mechanical properties 9,23,24 . For those soft films it was shown that inclusion of AN was an effective method for tuning the modulus of the films 8 .…”

Section: Introductionmentioning

confidence: 99%

“…AN is known to increase the surface hardness 25 , modulus 26 and tensile strength 27 and thermal stability 28,29 of copolymers due to the strong polarity of nitrile groups 28 and strong molecular interactions 30 . However, all of our previous nanostructured ionomer films used Bd as the main structural monomer 9,23,24 . For the coreshell systems, Bd compromised more than ~ 70 wt.% of the nanoparticles and the Young;s modulus values were less than 12 MPa 8, 9, 24 .…”

Section: Introductionmentioning

confidence: 99%

Tuning the modulus of nanostructured ionomer films of core–shell nanoparticles based on poly(n-butyl acrylate)

et al. 2016

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ABSTRACT:In this study we investigate the structure-mechanical property relationships for nanostructured ionomer films containing ionically crosslinked core-shell polymer nanoparticles based on poly(n-butyl acrylate) (PBA). Whilst nanostructured ionomer films of core-shell nanoparticles have been previously shown to have good ductility [Soft Matter, 10, 4725, 2014], the modulus values were modest. Here, we used BA as the primary monomer to construct core-shell nanoparticles that provided films containing nanostructured polymers with much higher glass transition temperature (T g ) values. The core-shell nanoparticles were synthesised using BA, acrylonitrile (AN), methacrylic acid (MAA) and 1, 4-butanediol diacrylate (BDDA). Nanostructured ionomer films were prepared by casting aqueous coreshell nanoparticle dispersions in which the shell -COOH groups were neutralised with KOH and ZnO. The film mechanical properties were studied using dynamic mechanical analysis and tensile stress-strain measurements. The use of BA-based nanoparticles increased the T g values to close to room temperature which caused a strong dependence of the film mechanical properties on the AN content and extent of neutralisation of the -COOH groups.The Young's modulus values for the films ranged from 1.0 to 86.0 MPa. The latter is the highest modulus reported for cast films of nanostructured ionomer films prepared from coreshell nanoparticles. The films had good ductility with strain-at-break values of at least 200%.The mechanical properties of the films were successfully modelled using the isostrain model.From comparison with an earlier butadiene-based system this study demonstrates that the 2 nature of the primary monomer used to construct the nanoparticles can profoundly change the film mechanical properties. The aqueous nanoparticle dispersion approach used here provides a simple and versatile method to prepare high modulus elastomer films with tuneable mechanical properties.

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“…The spectra of films cast from MAE100P dispersions with different ionization levels are shown in The peak at 1692 cm -1 was characteristic of the hydrogen-bonded carbonyl groups. The Na + (RCOO) -gave rise to a weaker peak at 1548 cm -1 (91). The spectrum showed that the peak intensity at 1692 cm -1 decreased with an increase in the ionization level.…”

Section: Ftirmentioning

confidence: 97%

“…The effects of the curing and casting methods on the mechanical properties of SR30D films are illustrated in The core-shell structures of latex particles have been reported in several publications (28,91,92). Core-shell polymer structures occur for certain compositions when the latex is prepared by emulsion polymerization.…”

Section: Mechanical Properties Of Free Filmsmentioning

confidence: 97%

Investigation of the effects of curing and casting methods on the physicochemical properties of polymeric coating systems

Yingjian¹

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Particulate ionomer films prepared from dispersions of crosslinked polymer colloids: A structure–property study

Cited by 16 publications

References 28 publications

Synthesis and characterization of superhydrophobic wood surfaces

Synthesis and characterization of superhydrophobic wood surfaces

Tuning the modulus of nanostructured ionomer films of core–shell nanoparticles based on poly(n-butyl acrylate)

Investigation of the effects of curing and casting methods on the physicochemical properties of polymeric coating systems

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