United States Patent
United States Patent
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DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
Sang H. Choi;Linda H. Hln.kbllnl
中科院分区：
文献类型：
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作者：
Sang H. Choi;Linda H. Hln.kbllnl
通过将精确形成的液体单体液滴（合适地为丙烯酸类化合物，例如甲基丙烯酸羟乙酯）部署到无容器环境中来生产具有非常精确的尺寸和单体类型和性质的广泛变化的非常小的单个聚合物微球。呈现球形形状的液滴在其穿过环境时经受聚合辐射，例如紫外线或γ辐射。回收具有精确直径的聚合物微球，所述精确直径与平均尺寸的变化不超过± 5%。包括磁性填料在内的许多类型的填料可以分散在液滴中。
Very small, individual polymeric microspheres with very precise size and a wide variation in monomer type and properties are produced by deploying a precisely formed liquid monomer droplet, suitably an acrylic compound such as hydroxyethyl methacrylate into a containerless environment. The droplet which assumes a spheroid shape is subjected to polymerizing radiation such as ultraviolet or gamma radiation as it travels through the environment. Polymeric microspheres having precise diameters varying no more than plus or minus 5 percent from an average size are recovered. Many types of fillers including magnetic fillers may be dispersed in the liquid droplet.