Aggregation kinetics of OX50 hydrosols in NaCl solutions studied by dynamic light scattering

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• 作者：L. M. Molodkina ; E. V. Golikova ; R. S. Bareeva ; A. N. Chusov…
• 刊名：Colloid Journal
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：78
• 期：5
• 页码：623-632
• 全文大小：928 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Polymer Sciences
  Surfaces and Interfaces and Thin Films
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1608-3067
• 卷排序：78

文摘

The aggregation kinetics of OX50 sols in aqueous NaCl solutions (10–4–2 × 10–1 M) has been studied for 15 days or more by dynamic light scattering. The following set of characteristics has been considered to quantitatively estimate the coagulation intensity in the disperse systems: the particle size corresponding to the maximum in the differential particle size distribution curve, the height of the maximum, the polydispersity index, and the average diameter of the intensity distribution. It has been found that slow sol coagulation proceeds via the barrierless mechanism in secondary potential minimum, which arises from the predominance of the dispersion attractive forces over structural and electrostatic repulsive forces.