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

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...

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Bibliographic Details
Published in:Polymer (Guilford) 2007-06, Vol.48 (13), p.3836-3843
Main Authors: Tanaka, Takuya, Suzuki, Toyoko, Saka, Yuichi, Zetterlund, Per B., Okubo, Masayoshi
Format: Article
Language:English
Subjects:
Applied sciences
Compressive strength
Cross-linking
Deformation
Exact sciences and technology
Mechanical properties
Organic polymers
Physicochemistry of polymers
Properties and characterization
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Summary: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.
ISSN:0032-3861
1873-2291
DOI:10.1016/j.polymer.2007.04.040