並列タイトル等Effect of the polymer adsorption behavior on the control of flow characteristics and particle packing structure in aqueous slurry.
一般注記type:Thesis
In slurry-based material manufacturing processes, product characteristics are often affected by the dispersion and agglomeration states of particles. Therefore, controlling these characteristics is necessary. One method for controlling particle dispersion is polymer addition, which is used in lithium-ion batteries, ceramics manufacturing, cosmetics, water treatment, and a variety of other industries. The mechanisms underlying the changes in the dispersion and aggregation states of particles in a slurry with added polymers are as follows: steric hindrance, cross-linking between the particles through polymers, electrostatic repulsion in the presence of polymers with electric potentials (caused by the adsorption of polymers on particle surfaces), and depletion forces (caused by the addition of unabsorbed polymers). Despite extensive research into these mechanisms, controlling the dispersion and agglomeration of particles is not easy, even in modern industry.In this study, we elucidated the polymer adsorption behavior on particle surfaces in aqueous slurries to provide guidelines for controlling the dispersion and aggregation of particles in slurries, the flow properties that are important in the manufacturing process, and the particle packing structures that affect product properties. By elucidating the changes in adsorption and particle dispersion state mechanisms and focusing on the differences in the hydrophilicity of particles and polymers, the mechanism underlying slurry changes over time, and the relationship between adsorption and particle dispersion state with the addition of multiple polymers, guidelines for slurry preparation were developed.Based on these considerations, we suggest that controlling the affinity of particles and polymers for water molecules, interaction between additives, mixing sequences, and the adsorption time, in addition to considering the conventional theory, is necessary to control the dispersion/aggregation states, flow properties, and packing structures of particles in aqueous slurries.To establish a generalized theory that can control particle dispersion in slurries and can be applied to a wide range of industries, continually investigating the relationship between the polymer adsorption mechanism and the dispersion/aggregation states of particles under a wide range of experimental conditions is important.
コレクション（個別）国立国会図書館デジタルコレクション > デジタル化資料 > 博士論文
受理日（W3CDTF）2023-07-08T03:42:31+09:00
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