Polymer hollow particles with controllable holes in their surfaces
Polymer hollow particles with controllable holes in their surfaces
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DOI：
10.1038/nmat1448
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发表时间：
2005-09-01
期刊：
影响因子：
41.2
通讯作者：
Xia, YN
中科院分区：
文献类型：
--
作者：
Im, SH;Jeong, UY;Xia, YN
具有中空内部的胶体颗粒在微胶囊化中起着重要作用-微胶囊化是一种广泛应用于药物、化妆品、油墨、颜料或化学试剂的控释;生物活性物质的保护;以及污染物的去除等应用中的方法（1-5）。中空颗粒最常见的制备方法是用所需材料（或其前体）的薄层涂覆胶体模板的表面，然后通过煅烧或化学蚀刻选择性去除模板（5）。这种简单直接的方法适用于各种材料，包括聚合物，陶瓷，复合材料和金属（5-14）。对于聚合物，也已经证明了诸如乳液聚合、相分离、胶束交联和自组装的方法用于产生中空结构（15-20）。然而，通过这些具有孔隙的封闭壳的扩散
Colloidal particles with hollow interiors play important roles in microencapsulation - a process that has found widespread use in applications such as controlled release of drugs, cosmetics, inks, pigments or chemical reagents; protection of biologically active species; and removal of pollutants(1-5). The hollow particles are most commonly prepared by coating the surfaces of colloidal templates with thin layers of the desired material (or its precursor), followed by selective removal of the templates by means of calcination or chemical etching(5). This simple and straightforward approach works for a variety of materials that include polymers, ceramics, composites and metals(5-14). For polymers, methods such as emulsion polymerization, phase separation, crosslinking of micelles and self-assembly have also been demonstrated for generating hollow structures(15-20). However, diffusion through these closed shells with pores