Mechanical properties of cross-linked polymer particles prepared by nitroxide-mediated radical polymerization in aqueous micro-suspension

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• 作者：Takuya Tanaka ; Toyoko Suzuki ; Yuichi Saka ; Per B. Zetterlund ; Masayoshi Okubo
• 关键词：Compressive strength ; Deformation ; Cross-linking
• 刊名：Polymer
• 出版年：2007
• 出版时间：15 June 2007
• 年：2007
• 卷：48
• 期：13
• 页码：3836-3843
• 全文大小：1073 K

文摘

The compressive strengths of micron-sized, cross-linked poly(styrene-divinylbenzene) particles synthesized by conventional radical copolymerization (70 °C) and nitroxide (TEMPO)-mediated radical copolymerization (125 °C) in aqueous micro-suspension have been measured. In the conventional system, the breaking energies and the compressive strengths of the particles (after removal of unreacted monomer) remained approximately constant from low to high conversion, whereas in the NMP system, both quantities increased close to linearly with conversion. The results suggest that the network formation is more homogeneous in the NMP system than in the conventional system.