Production of porous suspension polymer beads with a narrow size distribution using a cross-flow membrane and a continuous tubular reactor
Production of porous suspension polymer beads with a narrow size distribution using a cross-flow membrane and a continuous tubular reactor
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DOI：
10.1016/s0927-7757(00)00777-9
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发表时间：
2001-05-31
影响因子：
5.2
通讯作者：
Vincent, B
中科院分区：
文献类型：
--
作者：
Dowding, PJ;Goodwin, JW;Vincent, B
所描述的工作重点是生产具有确定粒径和窄尺寸分布的大多孔悬浮聚合物珠粒的两阶段工艺。乳化是使用特制的错流膜设备进行的，该设备可以控制生产尺寸分布更窄的大乳液液滴。所描述的工作比较了通过搅拌和使用错流膜制备的单体大乳液液滴的生产。还研究了膜孔径和流速的变化对产生的乳液液滴尺寸的影响。该过程的第二阶段是使用连续管式反应器聚合预形成的单体乳液液滴。使用这种方法聚合的样品显示出比批量聚合的类似系统更窄的尺寸分布。 (C) 2001 Elsevier Science S.V.版权所有。
The work described Focuses on a two-stage process for the production of large porous suspension polymer beads of defined particle size and narrow size distribution. Emulsification has been performed using purpose built cross-flow membrane equipment, which allows controlled production of large emulsion droplets with a much narrower size distribution. The work described compares the production of large emulsion droplets of monomer prepared both by agitation and using a cross-flow membrane. The effects of variations in the pore size of the membrane and flow-rates on the size of the emulsion droplets produced are also investigated. The second stage of the process is polymerisation of preformed monomer emulsion droplets using a continuous tubular reactor. Samples polymerised using such a method show a narrower size distribution than similar systems polymerised as a batch. (C) 2001 Elsevier Science S.V. All rights reserved.