1998
DOI: 10.1021/la980268s
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A Small-Angle Neutron Scattering Study of the Structure of Gelatin at the Surface of Polystyrene Latex Particles

Abstract: Small-angle neutron scattering has been employed to investigate the effects of salt and pH on the structure of gelatin at the surface of negatively charged polystyrene latex particles. Measurements were made with the scattering length density of the particles matched with the solvent. The data have been fitted to a combination of the scattering due to the average volume fraction profile of the layer and scattering from spatial concentration fluctuations. It has been shown that the scattering from the bare late… Show more

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Cited by 52 publications
(57 citation statements)
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“…Gelatin also forms coacervates with oppositely charged surfactants, and to this end, studies have been mainly made with anionic surfactants. [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] Interaction of gelatin with polyanions like sodium polystyrenesulfonate (NaPSS) or sodium poly(2-acrylamido-2-methylpropanesulfonate) 41 or mixed micelles of SDS and a sugar-based non-ionic surfactant 42 have been found to depend on the critical mole fraction, charge density, and chain length of the surfactants. But reports on the interaction of gelatin with non-ionic surfactants 43 or with cationic surfactants of varied types have been strikingly limited.…”
Section: Introductionmentioning
confidence: 99%
“…Gelatin also forms coacervates with oppositely charged surfactants, and to this end, studies have been mainly made with anionic surfactants. [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] Interaction of gelatin with polyanions like sodium polystyrenesulfonate (NaPSS) or sodium poly(2-acrylamido-2-methylpropanesulfonate) 41 or mixed micelles of SDS and a sugar-based non-ionic surfactant 42 have been found to depend on the critical mole fraction, charge density, and chain length of the surfactants. But reports on the interaction of gelatin with non-ionic surfactants 43 or with cationic surfactants of varied types have been strikingly limited.…”
Section: Introductionmentioning
confidence: 99%
“…Howe (1) has provided a comprehensive summary of the research done in this area. Small angle neutron scattering and fluorescence labeling have been used to deduce the adsorption and conformation of gelatin adsorbed to organic surfaces (2,3). The gelatin layer thickness obtained in these studies is closely matched to the values obtained from models using rheological data (4,5).…”
Section: Introductionmentioning
confidence: 53%
“…The smaller emulsions were sized using a cross flow field flow fractionation (CFFFF) instrument, Model F-1000, made by FFFractionation, LLC. The eluent used was 0.1% surfactant 2 Front face acquisition is where the excitation beam incidence and emission collection are at the same face of the spectrophotometric cell. The acquired signal is only from the part of the sample adjacent to the cell wall (2-dimensional collection).…”
Section: Drop Size Measurementsmentioning
confidence: 99%
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“…These interactions can be affected by many factors in the bulk aqueous solution, such as concentration [19], presence of surfactants [20,21], pH [22], and temperature, which can induce the extension or entanglement of gelatin molecules. Gelatin is composed of single ˛-chains, double-chained ˇ-fragments, undegraded triple-chained -material, and highly degraded low-molecularweight oligomeric fragments [23]. The supramolecular structure of gelatin is thus decided by the sophisticated intermolecular interactions among the chains.…”
Section: Introductionmentioning
confidence: 99%