Effect of compatibilizer and electron irradiation on free-volume and microhardness of syndiotactic polypropylene/clay nanocomposites |
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| Institution: | 1. Faculty of Physics, Sofia University “Kl. Ohridsky”, J. Bourchier Blvd. 5, 1126 Sofia, Bulgaria;2. Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 72 Tzarigradsko shoosse Blvd., 1784 Sofia, Bulgaria;3. Higher School of Transport “T. Kableshkov”, Geo Milev str. 159, 1574 Sofia, Bulgaria;4. Instituto de Ciencia y Tecnología de Polímeros (CSIC), Juan de la Cierva 3, 28006-Madrid, Spain;1. School of Chemical Engineering, College of Engineering, University of Tehran, P.O. Box 11365-4563, Tehran, Iran;2. Department of Nanotechnology and Advance Materials, Materials and Energy Research Center, Karaj, Alborz, Iran;3. Department of Chemical Engineering, Shahrood Branch, Islamic Azad University, P.O. Box 36155-163, Shahrood, Iran;4. Polymer Engineering and Color Technology Department, Amirkabir University of Technology, Tehran, Iran;1. Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand;2. Department of Chemical Engineering, Faculty of Engineering and Industrial Technology, Silpakorn University, NakornPathom 73000, Thailand;1. Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Strasse 6, 01069 Dresden, Germany;2. Goodyear S.A., Avenue Gordon Smith, L-7750 Colmar-Berg, Luxembourg;3. Institut für Werkstoffwissenschaft, Technische Universität Dresden, Helmholtz Strasse 7, 01069 Dresden, Germany;1. Technical University of Denmark, Department of Chemical and Biochemcial Engineering, Danish Polymer Center, DK-2800, Kgs. Lyngby, Denmark;2. DSM Research Performance Materials, Materials Science Center, NL-6160BB Geleen, The Netherlands;1. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China;2. School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, China |
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| Abstract: | Positron annihilation lifetime spectroscopy (PALS) and microindentation methods were applied to study the modification of syndiotactic polypropylene properties (PP) due to introducing of nanoclay (4 wt%) and maleic anhydride-modified PP oligomer into the polymer matrix.The influence of electron irradiation of nanocomposites with different doses (⩽440 kGy) was also studied. It was found that the initial irradiation with 30 kGy has a considerable effect on o-Ps lifetimes and intensities. However, the studied materials do not show noticeable differences in their behavior. |
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