By a News Reporter-Staff News Editor at Science Letter -- Fresh data on Nanocomposites are presented in a new report. According to news reporting originating from Beijing, People's Republic of China, by NewsRx correspondents, research stated, "Novel montmorillonites (Mts) were prepared by reacting aminopolyhedral oligomeric silsesquioxane (PUSS) with organic Mt (OMt). Poly(L-lactide) (PLLA)-based nanocomposites with Mt were produced by melt compounding."
Our news editors obtained a quote from the research from the Beijing University of Chemical Technology, "The effects of PUSS modified OMt (POSS-OMt) on the gas transport, thermal properties, and morphology of PLLA were investigated. PUSS in the interlayers of OMt exerted important effects on the properties of the clay polymer nanocomposites (CPN). XRD studies revealed that the layer spacing of OMt increased from 1.68 nm to 3.74 nm after intercalation with POSS. TEM findings indicated that the CPN consisted of a random dispersion of intercalated/exfoliated aggregates throughout the PLLA matrix. DSC results demonstrated that incorporation of 2 mass% POSS-OMt results in a significant increase in crystallization temperature. TGA studies further showed that the CPN prepared from POSS-OMt displays a 31.2 degrees C increase in decomposition temperature for 5% mass loss relative to virgin PLLA. Gas permeation analysis showed that increasing the Mt concentration in the polymer matrix leads to expected decreases in permeation values."
According to the news editors, the research concluded: "The gas barrier properties of the CPN were comparable with those predicted by phenomenological models, such as those from Nielsen and Cussler."
For more information on this research see: Synthesis of polyhedral oligomeric silsesquioxane-modified organic montmorillonites and their nanocomposites with poly(L-lactide). Applied Clay Science, 2014;87():34-39. Applied Clay Science can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Applied Clay Science - www.elsevier.com/wps/product/cws_home/503322)
The news editors report that additional information may be obtained by contacting D. Bi, Beijing University of Chemical Technology, Minist Educ, Key Lab Carbon Fiber & Funct Polymers, Beijing 100029, People's Republic of China. Additional authors for this research include Q.F. Li and G.X. Chen (see also Nanocomposites).
Keywords for this news article include: Asia, Beijing, Nanotechnology, Emerging Technologies, People's Republic of China
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