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New Findings in Materials Research Described by M. Fejos and Co-Researchers

February 25, 2014

By a News Reporter-Staff News Editor at Journal of Technology -- Researchers detail new data in Materials Research. According to news originating from Budapest, Hungary, by VerticalNews correspondents, research stated, "Triple-shape memory epoxy (EP)/polycaprolactone (PCL) systems (PCL content: 23 wt %) with different structures (PCL nanoweb embedded in EP matrix and EP/PCL with co-continuous phase structure) were produced. To set the two temporary shapes, the glass transition temperature (T-g) of the EP and the melting temperature (T-m) of PCL served during the shape memory cycle."

Our news journalists obtained a quote from the research, "An attempt was made to reinforce the PCL nanoweb by graphene nanoplatelets prior to infiltrating the nanoweb with EP through vacuum assisted resin transfer molding. Morphology was analyzed by scanning electron microscopy and Raman spectrometry. Triple-shape memory characteristics were determined by dynamic mechanical analysis in tension mode. Graphene was supposed to act also as spacer between the nanofibers, improving the quality of impregnation with EP. The EP phase related shape memory properties were similar for all systems, while those belonging to PCL phase depended on the structure. Shape fixity of PCL was better without than with graphene reinforcement. The best shape memory performance was shown by the EP/PCL with co-continuous structure."

According to the news editors, the research concluded: "Based on Raman spectrometry results, the characteristic dimension of the related co-continuous network was below 900 nm."

For more information on this research see: Epoxy/Polycaprolactone Systems with Triple-Shape Memory Effect: Electrospun Nanoweb with and without Graphene Versus Co-Continuous Morphology. Materials, 2013;6(10):4489-4504. Materials can be contacted at: Mdpi Ag, Postfach, Ch-4005 Basel, Switzerland. (Wiley-Blackwell -; Materials -

The news correspondents report that additional information may be obtained from M. Fejos, MTA BME Res Grp Composite Sci & Technol, H-1111 Budapest, Hungary. Additional authors for this research include K. Molnar and J. Karger-Kocsis.

Keywords for this news article include: Europe, Hungary, Budapest, Materials Research

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Source: Journal of Technology

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