By a News Reporter-Staff News Editor at Physics Week -- Investigators publish new report on Materials Science. According to news reporting out of Hsinchu, Taiwan, by VerticalNews editors, research stated, "A series of Cyclo-olefin copolymer (COC) blends were prepared via solution blending process and showed various miscibility because of different norbornene content as well as copolymer microstructure. Two kinds of nano-silica particles, including hydrophilic silica (Hp-SiO2) and hydrophobic silica (Hb-SiO2) were inducted into COC blends to deform the phase separation domains of COC blends."
Our news journalists obtained a quote from the research from National Tsing Hua University, "The properties and morphologies of the composites were characterized after preparation. The tensile moduli of 8007 blended films increase with increasing 5013 or 6013 content. The tensile moduli of the COCs composites slightly decrease either with 1 wt% Np- or Nb-SiO2. But the tensile strength and elongation increase as the 6013 content higher than 30 wt% in the 8007/6013 composites with 1 wt% Nb-SiO2 particles. By adding either Hp- or Hb-SiO2 particles, the haze value decreased in the immiscible blends (8007/5013) but slightly increase in the miscible blends (8007/6013). For all COCs and their blends, the transmittances are all higher than 85% with 1 wt% Nb-SiO2 loading. The phase separated domains deformed with nanosilica in 8007/5013 composites which might be a reason for lower haze."
According to the news editors, the research concluded: "In addition, transparent composite materials can be manufactured from immiscible COC blends containing nanoparticles."
For more information on this research see: Investigations on the optical and mechanical properties of cyclo-olefin copolymer blends and the effects of modified nanosilica particles. Materials Chemistry and Physics, 2013;141(2-3):694-704. Materials Chemistry and Physics can be contacted at: Elsevier Science Sa, PO Box 564, 1001 Lausanne, Switzerland. (Elsevier - www.elsevier.com; Materials Chemistry and Physics - www.elsevier.com/wps/product/cws_home/504097)
Our news journalists report that additional information may be obtained by contacting P.L. Shiao, Natl Tsing Hua Univ, Dept. of Chem Engn, Hsinchu 30013, Taiwan. Additional authors for this research include J.H. Yang, Y.S. Chou, M.C. Lai and Y.D. Lee.
Keywords for this news article include: Asia, Taiwan, Hsinchu, Materials Science
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