メチル基を含有するナノシリカ中空粒子の合成

抄録

Synthesis of hollow nano silica particles with methyl groups based on inorganic template method. Typically, silica coating on calcium carbonate template is formed via sol-gel reaction, and then template is removed by addition of diluted hydrochloric acid solution. When a methyltriethoxysilane （MTES） having one methyl group was used for silica coating, hollow structures were not obtained because of its slow reactivity and low affinity with calcium carbonate surface. Therefore, when MTES was mixed with tetraethoxysilane （TEOS） for silica coating, hollow structures were obtained for enough reaction time and optimum MTES/TEOS rate. The hybrid hollow particles exhibited hydrophobic so that high affinity with dispersing medium and matrix can be achieved.