Room temperature preparation of highly crosslinked microgels
Room temperature preparation of highly crosslinked microgels
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DOI：
10.1007/s00289-009-0134-z
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发表时间：
2010-01-01
期刊：
影响因子：
3.2
通讯作者：
Biffis, Andrea
中科院分区：
文献类型：
--
作者：
Dvorakova, Gita;Biffis, Andrea
以N，N-二甲基甲酰胺（DMF）为溶剂，甲基丙烯酸甲酯（MMA）和二甲基丙烯酸乙二酯（EDMA）分别为非功能单体和交联剂，在室温下通过光引发稀溶液聚合制备了一系列高度交联的微凝胶。研究了单体浓度和EDMA/MMA比例对产率、分子量和微凝胶尺寸的影响，并将数据与先前通过热引发制备的类似组合物的微凝胶进行了比较。与更常规的热方法相比，这种温和的聚合方法产生更好的结果，因为它允许使用更高的单体浓度以及更好的微凝胶尺寸控制。因此，该方法可以有利地用于制备具有改进的性能的高度交联的微凝胶，特别是用于例如分子印迹应用。
A series of highly crosslinked microgels has been prepared at room temperature via photoinitiated polymerisation in dilute solution using methyl methacrylate (MMA) and ethylene dimethacrylate (EDMA), respectively as non-functional monomer and crosslinker in N,N-dimethylformamide (DMF) as a solvent. The effect of monomer concentration and EDMA/MMA ratio on the yield, molecular weight and microgel size was studied and the data were compared to those previously obtained for microgels of similar composition prepared by thermal initiation. This mild polymerisation method yields better results compared to the more conventional thermal method, since it allows higher monomer concentrations to be employed as well as a better microgel size control. Consequently, the method can be advantageously used for the preparation of highly crosslinked microgels with improved properties, particularly useful, e.g. for molecular imprinting applications.