News Column

Investigators at Suranaree University of Technology Report Findings in Alkenes

June 27, 2014

By a News Reporter-Staff News Editor at Science Letter -- Investigators discuss new findings in Alkenes. According to news reporting originating from Nakhon Ratchasima, Thailand, by NewsRx editors, the research stated, "Structural properties at the bond and molecular level of poly(ethylene-co-atactic propylene) copolymer nanofiber were studied by lattice Monte Carlo simulation. The simulation was performed with a coarse-grained model of these random copolymer chains with the density in the range of 0.753-0.760 g/cm(3) at 473 K. The properties of nanofiber were characterized at different monomer fraction."

Our news editors obtained a quote from the research from the Suranaree University of Technology, "When the ethylene fraction was increased, the relative bead density of nanofibers was increased in the bulk region near the fiber (X) axis and dramatically decreased in the region toward the surface along the radial direction. The interfacial widths of these radial bead density profiles were increased for copolymer with higher ethylene content. End beads of polymer chains became more abundant in the region closer to the vacuum side and the bonds near the surface were more oriented in a parallel direction to the surface with an increase of ethylene content. Molecular size as represented by the radius of gyration (R (g) ) in the X-component became smaller along the radical direction, while the R (g) in the Y-Z component was relatively unchanged. There were significant changes in molecular shape (acylindricity) and the size of copolymer (components of the radius of gyration) as a function of ethylene content."

According to the news editors, the research concluded: "Similarly, the largest molecular axis was oriented in a parallel direction to the fiber axis, and changed toward random orientation when the ethylene content was decreased."

For more information on this research see: Effect of monomer composition on structural properties of poly(ethylene-co-propylene) nanofiber by Monte Carlo simulation. Macromolecular Research, 2014;22(5):474-480. Macromolecular Research can be contacted at: Polymer Soc Korea, Room 601, Hatchon Building, 831 Yeoksam-Dong, Kangnam-Ku, Seoul 135-792, South Korea. (Springer -; Macromolecular Research -

The news editors report that additional information may be obtained by contacting V. Vao-soongnern, Suranaree University of Technology, Inst Sci, Sch Chem, Lab Computat & Appl Polymer Sci, Nakhon Ratchasima 30000, Thailand (see also Alkenes).

Keywords for this news article include: Asia, Alkenes, Thailand, Ethylenes, Nakhon Ratchasima

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Source: Science Letter

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