Preparation and Properties of Starch-Based Colloidal Microgels
| العنوان: | Preparation and Properties of Starch-Based Colloidal Microgels |
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| المؤلفون: | Yannick Dziechciarek, Albert P. Philipse, Jeroen J.G. van Soest |
| المساهمون: | Colloïden en grenslagen, Universiteit Utrecht, Dep Scheikunde |
| المصدر: | Journal of Colloid and Interface Science, 246(1), 48-59 Journal of Colloid and Interface Science 246 (2002) 1 |
| بيانات النشر: | Elsevier BV, 2002. |
| سنة النشر: | 2002 |
| مصطلحات موضوعية: | Materials science, Starch, Intrinsic viscosity, Instituut voor Agrotechnologisch Onderzoek, Environmental scanning electron microscopy, Biomaterials, chemistry.chemical_compound, Colloid, Colloid and Surface Chemistry, Ionic strength, Polymer chemistry, Starch colloids, medicine, Reduced viscosity, Charged silica spheres, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Condensed Matter::Soft Condensed Matter, Chemical engineering, chemistry, Agrotechnological Research Institute, Emulsion, Particle, Particle size, Swelling, medicine.symptom, Starch microgels |
| الوصف: | Novel starch microgels were prepared by emulsion cross-linking and characterized with respect to shape, volume, and mass density. Starch microgels appear to be negatively charged (similar to-50 mV), with a particle size varying as a function of the type of cross-linker (ca. 0.25-10 mum). Environmental scanning electron microscopy observations show a dependence of the particle swelling on the cross-linking density. Viscosimetry reveals that starch microgels behave as charged polymers, where the reduced viscosity increases with dilution (anomalous viscosity behavior) for sufficiently low kappaa (ca. kappaa < 3), the ratio of the particle radius (a), and the Debye length (kappa(-1)). Analogous results are obtained for reference-charged rigid silica spheres, which approach the hard sphere limit for increasing ionic strengths. The shape of the microgels appears to play a minor role in the anomalous viscosity behavior, which is more likely dominated by electrostatic effects. (C) 2002 Elsevier Science. |
| وصف الملف: | application/octet-stream; application/pdf; image/pdf |
| تدمد: | 0021-9797 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a51104dc33e68a6abd61db8c6eb0964Test https://doi.org/10.1006/jcis.2001.8044Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....5a51104dc33e68a6abd61db8c6eb0964 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 00219797 |
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