Features of composites prepared by radical graft‐polymerization of styrene to a hydrophilic macromer adsorbed on ultrafine colloidal particles
Features of composites prepared by radical graft‐polymerization of styrene to a hydrophilic macromer adsorbed on ultrafine colloidal particles
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苯乙烯与超细胶体颗粒吸附的亲水大分子自由基接枝聚合制备复合材料的特性
DOI：
10.1002/pat.1994.220050607
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发表时间：
1994
影响因子：
3.4
通讯作者：
K. Nagao
中科院分区：
文献类型：
--
作者：
K. Yoshinaga;K. Nagao
采用苯乙烯接枝聚合法制备了粒径小于80 nm的单分散超细金属氧化物胶体颗粒，并对其进行了高分子改性。在中性水溶液中ζ-电位分别为- 30 mV和- 42 mV的乙醇二氧化硅和二氧化钛胶体溶液中聚合，得到非球形的聚苯乙烯-二氧化硅或二氧化钛复合材料。对Al(OH)3和CeO2-TiO2-SiO2配合物等表面能较低的胶体粒子进行改性，形成了粒径在500 ~ 3000 nm之间的球形复合材料，由分散的金属氧化物或氢氧化物组成。
Polymer modifications of ultrafine monodispersed colloidal metal oxide particles, smaller than 80 nm in diameter, by the graft-polymerization of styrene to a hydrophilic macromer adsorbed on the surface were investigated. The polymerization in ethanolic silica and titania colloid solution, which had negatively larger ζ-potentials, −30 and −42 mV in neutral aqueous solution respectively, gave poly(styrene)–silica or titania composite, being of nonspherical shape. The modifications of colloidal particles, having lower surface energy, such as Al(OH)3 and CeO2–TiO2–SiO2 complex, led to the formation of spherical composites, ranging in size from 500 to 3000 nm, of scattered metal oxide or hydroxide particles.