Interactions in Colloidal Mixtures: Partial Structure Factors in Mixtures of Colloidal Silica and an Anionic Oil-in-Water Microemulsion

Kline, S. J.; Kaler, Eric W.

doi:10.1006/jcis.1998.5543

Cited by 22 publications

(13 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Modeling II extends the capabilities by including additional structure factors, the code for which is adopted from the NIST Igor package (Kline, 2006): Percus-Yevick model hard spheres (Percus & Yevick, 1958;Thiele, 1963;Wertheim, 1963), square well (Sharma & Sharma, 1977), sticky hard spheres (Kline & Kaler, 1998) and Hayter-Penfold MSA (Hayter & Penfold, 1981).…”

Section: Non-interacting Dilute Systems Modelingmentioning

confidence: 99%

Irena: tool suite for modeling and analysis of small-angle scattering

2009

View full text Add to dashboard Cite

Irena, a tool suite for analysis of both X-ray and neutron small-angle scattering (SAS) data within the commercial Igor Pro application, brings together a comprehensive suite of tools useful for investigations in materials science, physics, chemistry, polymer science and other fields. In addition to Guinier and Porod fits, the suite combines a variety of advanced SAS data evaluation tools for the modeling of size distribution in the dilute limit using maximum entropy and other methods, dilute limit small-angle scattering from multiple noninteracting populations of scatterers, the pair-distance distribution function, a unified fit, the Debye-Bueche model, the reflectivity (X-ray and neutron) using Parratt's formalism, and small-angle diffraction. There are also a number of support tools, such as a data import/export tool supporting a broad sampling of common data formats, a data modification tool, a presentation-quality graphics tool optimized for small-angle scattering data, and a neutron and X-ray scattering contrast calculator. These tools are brought together into one suite with consistent interfaces and functionality. The suite allows robust automated note recording and saving of parameters during export.

show abstract

Section: Non-interacting Dilute Systems Modelingmentioning

confidence: 99%

Irena: tool suite for modeling and analysis of small-angle scattering

2009

View full text Add to dashboard Cite

show abstract

“…Condensed systems require the selection of a structure factor to describe the interparticle interference effects in a SASD pattern. Currently available in GSAS-II are hard sphere (Percus & Yevick, 1958;Thiele, 1963;Wertheim, 1963), sticky hard sphere (Kline & Kaler, 1998), square well (Sharma & Sharma, 1977) and interprecipitate (Giordano et al, 1991;Huang et al, 2008) models; each has additional parameters. Others listed by Pedersen (1997) are not currently in GSAS-II but could readily be added.…”

Section: Figurementioning

confidence: 99%

Small-angle scattering data analysis inGSAS-II

Dreele

2014

J Appl Crystallogr

View full text Add to dashboard Cite

The General Structure Analysis System II (GSAS‐II) now contains modules for the analysis of small‐angle X‐ray scattering data. This includes processing of two‐dimensional images to create corrected one‐dimensional patterns, analysis via maximum entropy or total nonnegative least‐squares methods of the size distribution, assuming polydispersity, in the dilute limit, and modeling of the one‐dimensional data with combinations of Guinier/Porod, Porod, both dilute and condensed populations of scattering objects, and Bragg scattering components; slit smearing corrections can be applied where needed. GSAS‐II can apply these modeling tools over a sequence of data collected while some experimental condition is varied. This sequential refinement result can then be subjected to a post refinement analysis to determine global parameters encompassing the entire experiment.

show abstract

“…the Dozier star polymer model [23,24], the poly-disperse core shell (PCS) model [25,26] or the Gaussian coil excluded volume (GCEV) model [27],…”

Section: Synthesis Of Dvb-ps-mentioning

confidence: 99%

“…The PCS model [25,26], in contrast to the Dozier model, does not take into account the structural correlations in the star polymers explicitly, but instead considers the polymer as a core-shell structure, in which multiple concentric shells of different densities are considered. We also took into account the size distribution of the scattering particles by modeling the intensity scattered from a poly-disperse system:…”

Section: Synthesis Of Dvb-ps-mentioning

confidence: 99%

Structural transition of nanogel star polymers with pH by controlling PEGMA interactions with acid or base copolymers

et al. 2016

View full text Add to dashboard Cite

We use small angle x-ray scattering (SAXS) to characterize a class of star diblock polymers with a nanogel core on which the outer block arms are comprised of random co-polymers of temperature sensitive PEGMA with pH sensitive basic (PDMAEMA) and acidic (PMAA) monomers. The acquired SAXS data shows that many of the nanogel star polymers undergo a sharp structural transition over a narrow range of pH, but with unexpectedly large shifts in the apparent pKa with respect to that of the acidic or basic monomer unit, the linear polymer form, or even an alternate star polymer with a tightly cross-linked core chemistry. We have demonstrated a distinct and quantifiable structural response for the nanogel star copolymers by altering the core or by pairing the monomers PDMAEMA-PEGMA and PMAA-PEGMA to achieve structural transitions that have typically been observed in stars through changes in arm length and number.

show abstract

Interactions in Colloidal Mixtures: Partial Structure Factors in Mixtures of Colloidal Silica and an Anionic Oil-in-Water Microemulsion

Cited by 22 publications

References 50 publications

Irena: tool suite for modeling and analysis of small-angle scattering

Irena: tool suite for modeling and analysis of small-angle scattering

Small-angle scattering data analysis inGSAS-II

Structural transition of nanogel star polymers with pH by controlling PEGMA interactions with acid or base copolymers

Contact Info

Product

Resources

About