Particle size analysis

Barth, Howard G.; Sun, Shao Tang.

doi:10.1021/ac00060a005

Cited by 26 publications

(7 citation statements)

References 8 publications

(8 reference statements)

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“…A multitude of methods other than SAXS, such as light scattering, sedimentation, and microscopy, are used to determine the properties of small particles. , In static light scattering (SLS), the scattered intensity of visible light is measured. The resulting diffraction patterns are compared to a model to determine the particle size.…”

Section: Introductionmentioning

confidence: 99%

In Situ Characterization of Colloidal Spheres by Synchrotron Small-Angle X-ray Scattering

et al. 1997

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In Situ Characterization of Colloidal Spheres by Synchrotron Small-Angle X-ray Scattering Megens, M.; van Kast, C.M.; Boesecke, P.; Vos, W.L. Published in: Langmuir DOI:10.1021/la970422vLink to publication Citation for published version (APA):Megens, M., van Kast, C. M., Boesecke, P., & Vos, W. L. (1997). In Situ Characterization of Colloidal Spheres by Synchrotron Small-Angle X-ray Scattering. Langmuir, 13, 6120-6129. DOI: 10.1021/la970422v General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. We have performed small-angle X-ray scattering with a synchrotron source on dilute suspensions of colloidal spheres of polystyrene latex, Stöber silica, and microemulsion-grown silica. Many interference fringes are observed of the monodisperse particles over a large range of scattering vectors and more than 5 orders of magnitude in intensity. We present a straightforward method to deduce the radii, the size polydispersity, and the interface thickness of the particles from a Porod plot of one and the same in situ measurement. The radii agree very well with static light-scattering data. The radii are larger than the electron microscopy data of dry spheres and smaller than the hydrodynamic radii from dynamic lightscattering data. The size polydispersities are smaller than those obtained by electron microscopy, which is well explained by the intrinsic random errors of electron microscopy. We find that nearly all the particles have a homogeneous internal density and a sharp interface with the suspending medium of less than 1 nm wide. In one case of a stepwise synthesized particle, we have discerned a dense core and a less-dense shell, without contrast matching with the suspending liquid. It is concluded that synchrotron small-angle X-ray scattering is a very powerful technique for the in situ study of colloidal systems.

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Section: Introductionmentioning

confidence: 99%

In Situ Characterization of Colloidal Spheres by Synchrotron Small-Angle X-ray Scattering

et al. 1997

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“…Gravimetric methods are used to measure solids content; particle size distribution information is obtained through light scattering methods, microscopy, or capillary hydrodynamic flow techniques. Photon correlation spectroscopy is also used to measure particle size distributions (116). Viscosity measurements are made using Brookfield or similar viscometers.…”

Section: Emulsion Polymersmentioning

confidence: 99%

Methacrylic Ester Polymers

Slone

2010

Encyclopedia of Polymer Science and Technology

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Historically speaking, methacrylic ester polymers and acrylic ester polymers developed at the same time. In 1933, acrylates were copolymerized with ethyl methacrylate; this work led to the commercialization of ethyl methacrylate monomer. The homopolymerization of methyl methacrylate [80‐62‐6] to form poly(methyl methacrylate) [9011‐14‐7] (PMMA) found a special market in safety glass which consisted of two glass plates separated by a thin layer of poly(methyl methacrylate). Cast sheets of PMMA were brought to market in the 1930s by the Rohm and Haas Co. and E. I. du Pont de Nemours & Co., Inc., in the United States as well as by Rohm and Haas AG and Imperial Chemicals Industries, Ltd., in Europe. These cast sheets were used as structural materials; the shatter resistance, light weight, high transparency, and moldability recommended the use of PMMA for windows and military aircraft canopies. Methacrylates entered the injection and compression molding arenas in 1938. Finally, during the 1930s, methyl methacrylate found a great deal of use as a comonomer in the production of acrylic polymers by emulsion and solution polymerization. These copolymers have primarily been employed as high quality paints and coatings.

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“…Gravimetric methods are used to measure solids content; particle size distribution information is obtained through light scattering methods, microscopy or capillary hydrodynamic flow (CHDF) techniques. Photon correlation spectroscopy is also used to measure particle size distributions (118). Viscosity measurements are made using Brookfield or similar viscometers.…”

Section: Emulsion Polymersmentioning

confidence: 99%

Methacrylic Polymers

Slone¹

2003

Kirk-Othmer Encyclopedia of Chemical Technology

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The commercially relevant and diverse chemistry of methacrylic ester polymers has encouraged their use in a remarkable variety of applications. Within this overview, particular attention is paid to the diversity of properties of methacrylic ester polymers and copolymers, the methods used to produce methacrylic ester polymers with specific properties, and the commercial applications of these materials.

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Particle size analysis

Cited by 26 publications

References 8 publications

In Situ Characterization of Colloidal Spheres by Synchrotron Small-Angle X-ray Scattering

In Situ Characterization of Colloidal Spheres by Synchrotron Small-Angle X-ray Scattering

Methacrylic Ester Polymers

Methacrylic Polymers

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