Fibre- and Polymer Technology, Royal Institute of Technology (KTH), SE-100 44 Stockholm, Sweden.
Biomacromolecules. 2011 Jan 10;12(1):253-9. doi: 10.1021/bm101357k. Epub 2010 Dec 17.
A multifunctional macroinitiator for single-electron-transfer mediated living radical polymerization (SET-LRP) was designed from acetylated galactoglucomannan (AcGGM) by α-bromoisobutyric acid functionalization of the anomeric hydroxyl groups on the heteropolysaccharide backbone. This macroinitiator, with a degree of substitution of 0.15, was used in the SET-LRP of methyl acrylate, catalyzed by Cu(0)/Me(6)-TREN in DMSO, DMF, or DMSO/H(2)O in various concentrations. Kinetic analyses confirm high conversions of up to 99.98% and a living behavior of the SET-LRP process providing high molecular weight hemicelluloses/methyl acrylate hybrid copolymers with a brush-like architecture.
设计了一种多功能的大分子引发剂，用于单电子转移介导的活性自由基聚合（SET-LRP），它是通过异多糖主链上的端基羟基的α-溴代异丁酸功能化，从乙酰化半乳甘露聚糖（AcGGM）得到的。这种大分子引发剂的取代度为 0.15，用于在 DMSO、DMF 或 DMSO/H2O 的不同浓度中，由 Cu(0)/Me6-TREN 催化的甲基丙烯酸甲酯的 SET-LRP。动力学分析证实了高达 99.98%的高转化率和 SET-LRP 过程的活性行为，提供了具有刷状结构的高分子量半纤维素/甲基丙烯酸甲酯杂化共聚物。
