Polymer swelling via saxs
WebApr 10, 2024 · where κ is the shape factor taken as 0.9; λ, the wavelength of the Cu Kα line (0.1542 nm); θ, Bragg angle in radians; B, angular width in radians corresponding to the half-intensity width of the diffraction peaks; and b, the instrumental broadening (0.0035 in radians). Small-angle X-ray scattering (SAXS) To investigate microfibril interval periodicity … WebMay 1, 2001 · The possibility of estimating the polymer transition layer thickness in dried and wetted samples is an additional advantage of the SAXS method employment in the …
Polymer swelling via saxs
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WebThis study is focused on the formation of polymer/silica nanocomposite particles prepared by the surfactant-free aqueous emulsion polymerization of 2,2,2-trifluoroethyl methacrylate (TFEMA) in the presence of 19 nm glycerol-functionalized aqueous silica nanoparticles using a cationic azo initiator at 60 °C. WebJan 1, 2011 · Small-angle X-ray scattering (SAXS) is employed to establish the structure of a self-assembled lipid/water system formed in excess aqueous phase by pharmaceutical-grade glycerol monooleate (GMO). A nonionic guest component (octyl glucoside) is incorporated with the purpose to study the swelling of the structure under full hydration.
WebJun 21, 2014 · Affiliation 1 Structure et Propriétés d'Architectures Moléculaires, UMR 5819 SPrAM (CEA-CNRS-UJF), CEA-Grenoble, 17, rue des Martyrs, 38054 Grenoble, Cedex 9, France. [email protected]. WebMay 19, 2024 · The persistence length of the D-A polymer extracted from SAXS agrees well with a theoretical model based on the dihedral potentials. Additionally, we show that the broad high q structure factor peak seen in scattering profiles can be attributed to lamellar stacking occurring within the fibril aggregates and that the low q aggregate scattering is …
WebOnly a lamellar LLC phase is formed by L62, while P105 is capable of self-assembling with increasing polymer concentration into (body-centered close-packed) cubic, hexagonal, and lamellar LLC phases. Upon heating, the LLC phases of the L62-water and L64-water systems swell with water; no such swelling is detected for the P105-water system. WebNov 21, 2012 · The SAXS profiles of the swollen rubber materials with toluene were described well by a model that considers the hierarchical structure of the ZDA aggregates. …
Webprotocol to accelerate membrane swelling through a cyclic scheme of annealing and equilibration.31 Empirically, polymer swelling in liquids is assessed qualitatively through the solubility parameter difference between polymer and liquid. As the difference is close to zero, the miscibility of polymer in liquid tends to be high.
WebNov 2, 2024 · The example discussed above reveals that detailed study of the SAXS pattern during polymer deformation, or in general during any structural changes (including melting), relates to changes at the lamellar length scale, and thus can be useful in understanding the linkages between the crystalline and amorphous chain segments. dark brown leather tub chairdark brown leather trainersWebHere, conetworks composed of poly(2‐ethylhexyl acrylate) crosslinked by poly(2‐methyl‐2‐oxazoline) (PMOx) are investigated with small‐angle X‐ray scattering in … biscoff dippersWebJun 22, 2016 · The SAXS signal is proportional to the square of the electron density difference between polymer and solvent, and the q dependence is given by the size and shape of the polymers in solution (the form factor) and by the interactions between different polymers (described by the structure factor). 8 In the case of charged polymers, the … biscoff dark chocolate cookie butterWebMar 24, 2006 · The mechanism underlying the anisotropic swelling behavior and endoscopic deliverability (i.e., flexibility) was investigated by scanning electron microscopy (SEM), … biscoff dogsWebMicrogels can be considered soft, porous and deformable particles with an internal gel structure swollen by a solvent and an average size between 100 and 1000 nm. Due to their biocompatibility, colloidal stability, their unique dynamicity and the permeability of their architecture, they are emerging as important candidates for drug delivery systems, … dark brown leather watchWebMay 24, 2010 · This paper compares the results yielded by two methods of small-angle X-ray scattering data analysis for semicrystalline polymer blends. The first method is based on the use of a theoretical modeling for isotropic samples and a subsequent curve fitting. The second one is a more familiar method, based on the calculation of the linear one … dark brown leather upholstery fabric