caa a22 4500 475764129 CHVBK 20180406123600.0 cr unu---uuuuu 170329e20000301xx s 000 0 eng 10.1007/s003960050035 doi (NATIONALLICENCE)springer-10.1007/s003960050035 Estimation of flocculation structure in filled polymer composites by dynamic rheological measurements [Elektronische Daten] [G. Wu, S. Asai, M. Sumita, T. Hattori, R. Higuchi, J. Washiyama]  The frequency and concentration dependences of the storage modulus (G ′) for carbon black and short-carbon-fiber-filled polymer composites were investigated by means of dynamic rheological measurements. It was found that G ′ at low frequencies and amplitudes could be used as a sensitive experimental parameter for detecting the flocculation structure of the ultra-fine-particle-filled polymer composites. Correlation of electrical resistivity of the composites to the relative storage modulus, G ′ r(=G ′ c/ G ′ p), revealed that the three-dimensional interparticle networks start to construct through the matrix when G ′ r increases to 7 regardless of the composite systems. Quantitative calculations in order to determine the flocculation structure were carried out by means of the modified Kerner equation. A plot of the calculated value, defined as the floc index A, dependence of electrical resistivity for various systems was found to be a universal curve. Accordingly, we suggest that A might universally correspond to the flocculation structure of the filler, which is independent of the nature of the filler, the molecular weight, the chemical composition of the polymer and the temperature at which the measurement is made. This method is particularly effective for estimating the flocculation structure of ultra-fine-particle-filled polymer composites no matter whether the filler is conductive or not. Springer-Verlag Berlin Heidelberg, 2000 Key words Dispersion nationallicence Flocculation nationallicence Rheology nationallicence Carbon black nationallicence Filled polymer composites nationallicence Wu G. Department of Organic and Polymeric Materials Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku, Tokyo 152, Japan e-mail: msumita@o.cc.bitech.ac.jp Tel.: +81-3-57342431 Fax: +81-3-57342876, JP aut Asai S. Department of Organic and Polymeric Materials Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku, Tokyo 152, Japan e-mail: msumita@o.cc.bitech.ac.jp Tel.: +81-3-57342431 Fax: +81-3-57342876, JP aut Sumita M. Department of Organic and Polymeric Materials Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku, Tokyo 152, Japan e-mail: msumita@o.cc.bitech.ac.jp Tel.: +81-3-57342431 Fax: +81-3-57342876, JP aut Hattori T. Japan Polyolefin Co. Ltd. 3-2, Yako 2-chome, Kawasaki-ku Kawasaki-shi, Kanagawa 210, Japan, JP aut Higuchi R. Japan Polyolefin Co. Ltd. 3-2, Yako 2-chome, Kawasaki-ku Kawasaki-shi, Kanagawa 210, Japan, JP aut Washiyama J. Montell-JPO Co. Ltd. 3-2, Yako 2-chome, Kawasaki-ku Kawasaki-shi, Kanagawa 210, Japan, JP aut https://doi.org/10.1007/s003960050035 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s003960050035 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wu G. Department of Organic and Polymeric Materials Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku, Tokyo 152, Japan e-mail: msumita@o.cc.bitech.ac.jp Tel.: +81-3-57342431 Fax: +81-3-57342876, JP aut NATIONALLICENCE 700 1- Asai S. Department of Organic and Polymeric Materials Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku, Tokyo 152, Japan e-mail: msumita@o.cc.bitech.ac.jp Tel.: +81-3-57342431 Fax: +81-3-57342876, JP aut NATIONALLICENCE 700 1- Sumita M. Department of Organic and Polymeric Materials Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku, Tokyo 152, Japan e-mail: msumita@o.cc.bitech.ac.jp Tel.: +81-3-57342431 Fax: +81-3-57342876, JP aut NATIONALLICENCE 700 1- Hattori T. Japan Polyolefin Co. Ltd. 3-2, Yako 2-chome, Kawasaki-ku Kawasaki-shi, Kanagawa 210, Japan, JP aut NATIONALLICENCE 700 1- Higuchi R. Japan Polyolefin Co. Ltd. 3-2, Yako 2-chome, Kawasaki-ku Kawasaki-shi, Kanagawa 210, Japan, JP aut NATIONALLICENCE 700 1- Washiyama J. Montell-JPO Co. Ltd. 3-2, Yako 2-chome, Kawasaki-ku Kawasaki-shi, Kanagawa 210, Japan, JP aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer