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Researchers from University of Delaware Report Recent Findings in Molecular Structures [Near-infrared (NIR) imaging analysis of polylactic acid (PLA)...

August 1, 2014



Researchers from University of Delaware Report Recent Findings in Molecular Structures [Near-infrared (NIR) imaging analysis of polylactic acid (PLA) nanocomposite by multiple-perturbation two-dimensional (2D) correlation spectroscopy]

By a News Reporter-Staff News Editor at Science Letter -- A new study on Molecular Structures is now available. According to news reporting from Newark, Delaware, by NewsRx journalists, research stated, "Multiple-perturbation two-dimensional (2D) correlation spectroscopy was applied to sets of near-infrared (NIR) imaging data of polylactic acid (PLA) nanocomposite samples undergoing UV degradation. Incorporation of clay nanoparticles substantially lowers the surface free energy barrier for the nucleation of PLA and eventually increases the frequency of the spontaneous nucleation of PLA crystals."

The news correspondents obtained a quote from the research from the University of Delaware, "Thus, when exposed to external stimuli such as UV light, PLA nanocomposite may show different structure alternation depending on the clay dispersion. Multiple-perturbation 2D correlation analysis of the PLA nanocomposite samples revealed different spatial variation between crystalline and amorphous structure of PLA, and the phenomenon especially becomes acute in the region where the clay particles are coagulated. The incorporation of the clay leads to the cleavage-induced crystallization of PLA when the sample is subjected to the UV light."

According to the news reporters, the research concluded: "The additional development of the ordered crystalline structure then works favorably to restrict the initial degradation of the polymer, providing the delay in the weight loss of the PLA."

For more information on this research see: Near-infrared (NIR) imaging analysis of polylactic acid (PLA) nanocomposite by multiple-perturbation two-dimensional (2D) correlation spectroscopy. Journal of Molecular Structure, 2014;1069():171-175. Journal of Molecular Structure can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Journal of Molecular Structure - www.elsevier.com/wps/product/cws_home/500850)

Our news journalists report that additional information may be obtained by contacting H. Shinzawa, University of Delaware, Dept. of Mat Sci & Engn, Newark, DE 19716, United States. Additional authors for this research include T.N. Murakami, M. Nishida, W. Kanematsu and I. Noda (see also Molecular Structures).

Keywords for this news article include: Newark, Delaware, United States, North and Central America, Molecular Structures

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Science Letter


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