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International Journal of Polymer Science
Volume 2012 (2012), Article ID 816163, 8 pages
doi:10.1155/2012/816163
Synthesis of Hyperbranched Polymer Using Slow Monomer Addition Method
Division of Biotechnology and Macromolecular Chemistry, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
Received 17 August 2011; Accepted 13 October 2011
Academic Editor: Eri Yoshida
Copyright © 2012 Toshifumi Satoh. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
This paper details the synthesis of a well-defined hyperbranched polymer using a slow monomer addition method. The polymerization under slow monomer addition conditions results in a very low monomer concentration actually present in the reaction mixture, and the exclusive reaction of the monomer with the growing polyfunctional macromolecules occurs, resulting in a high molecular weight and a high degree of branching value. Thus, the slow monomer addition is a versatile and preferential method for the controlled synthesis of a well-defined hyperbranched polymer with both a high molecular weight and a high degree of branching value.