Radical polymerization of capillary bridges between micron-sized particles in liquid bulk phase as a low temperature route to produce porous solid materials.
Radical polymerization of capillary bridges between micron-sized particles in liquid bulk phase as a low temperature route to produce porous solid materials.
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DOI：
10.1007/s00396-017-4149-y
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发表时间：
2017-10
影响因子：
2.4
通讯作者：
Koos E
中科院分区：
文献类型：
--
作者：
Hauf K;Riazi K;Willenbacher N;Koos E
我们提出了一种通用的和多功能的低温路线，以生产大孔体的孔隙率和孔径分布，是在很大范围内可调。毛细管悬浮液，其中次要流体是单体，被用作前体。单体优先位于颗粒之间，形成毛细桥，从而形成坚固的交联网络。这些桥在低于100 °C的温度下热诱导聚合少于5小时，随后除去本体流体，产生具有高孔隙率的宏观自支撑固体。这个过程是证明使用甲基丙烯酸甲酯和甲基丙烯酸羟乙酯与玻璃颗粒作为模型系统。所生产的PMMA具有约500.000 g/mol的分子量和约3的分散度。还示出了应用特定的多孔体，包括通过PMMA桥连接的PMMA颗粒、含有具有高内表面的相变材料的微米尺寸的胶囊和具有高电导率的多孔石墨膜。
We present a generic and versatile low temperature route to produce macro-porous bodies with porosity and pore size distribution that are adjustable in a wide range. Capillary suspensions, where the minor fluid is a monomer, are used as pre-cursors. The monomer is preferentially located between the particles, creating capillary bridges, resulting in a strong, percolating network. Thermally induced polymerization of these bridges at temperatures below 100 °C for less than 5 hours and subsequent removal of the bulk fluid yields macroscopic, self-supporting solid bodies with high porosity. This process is demonstrated using methylmethacrylate and hydroxyethylmethacrlyate with glass particles as a model system. The produced PMMA had a molecular weight of about 500.000 g/mol and dispersity about three. Application specific porous bodies, including PMMA particles connected by PMMA bridges, micron-sized capsules containing phase change material with high inner surface, and porous graphite membranes with high electrical conductivity, are also shown.
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DOI：
10.1016/j.colsurfa.2017.01.026
发表时间：
2017-04-05
期刊：
Colloids and surfaces. A, Physicochemical and engineering aspects
影响因子：
--
作者：
Bossler F;Weyrauch L;Schmidt R;Koos E
通讯作者：
Koos E
影响因子：
4.6
作者：
Hemmerle A;Schröter M;Goehring L
通讯作者：
Goehring L
影响因子：
11.4
作者：
Kumar, R;Bhattacharjee, B
通讯作者：
Bhattacharjee, B
影响因子：
4.6
作者：
Lee, Sang-Young;Park, Soon-Yong;Song, Heon-Sik
通讯作者：
Song, Heon-Sik
影响因子：
5.5
作者：
OBER, CK;LOK, KP
通讯作者：
LOK, KP