Hosono, Masao

Sakurada, Ichiro

Kyoto University Research Information Repository

Title Electrophoretic Mobility of Polyelectrolytes. (I) :Electrophoretic Mobility of Polyvinyl AlcoholAuthor(s)Hosono, Masao; Sakurada, IchiroCitationBulletin of the Institute for Chemical Research, KyotoUniversity (1958), 36(4): 108-108Issue Date1958-07-31URL http://hdl.handle.net/2433/75649RightType Departmental Bulletin PaperTextversionpublisherKyoto University                                    ABSTRACTS         study the influence of degrees of polymerization on the second-order transition         temperature was investigated. The fractionated PVA films with various degrees         of polymerization (DP  140-4635) were used in the experiment. The influence         of polymerization were not detected.                  Electrophoretic Mobility of Polyelectrolytes. (I)                      Electrophoretic Mobility of Polyvinyl Alcohol                          Masao HosoNo and Ichiro SAKURADA                                     (Sakurada Laboratory)              Chemistry of High Polymers (Kobunshi Kogaku), 14, 624 (1957)            The electrophoretic mobility of polyvinyl alcohol was measured with the         Tiselius' apparatus. It was found, that polyvinyl alcohol molecules were nega-        tively charged. The mobility depends on the concentration of the polyelectolyte,         but is almost independent from the polymerization degree of the polymer.         From the theory of the polymerization and the experimental determination of         Yoshizaki the highest possible carboxyl content of polyvinyl alcohol is one or         two carboxyl groups per molecule, but the experimental found number of         charge is much greater than this value.             Studies on Line Structures in Single Crystals of Tin. (IV)                 Hideo TAKAKI, Masashige KoYAMA and Hidekiyo FuJixmRA                                   (Takaki Laboratory)                Journal of the Japan Institute of Metals (Nippon Kinzokugaku                              Kaishi), 21, 279 (1957)            An examination was carried out microscopically and X-ray analytically         with single crystals of 99.87 % pure tin, in order to clarify the relation between         the temperature gradient and the substructures (corrugations and striations)         which had been observed in single crystals of tin grown from the melt. The         features obtained by increasing the temperature gradient from 13°C/cm to 45°         C/cm, are summarized as follows :            (1) The direction of corrugations inclines steeply from the direction of         easy growth, [110], towards that of the specimen axis.            (2) The striations are easy to generate.           (3) On the free top surface of the single crystals of 99.87(Vpure tin grown (108)

Electrophoretic Mobility of Polyelectrolytes. (I) : Electrophoretic Mobility of Polyvinyl Alcohol

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Electrophoretic Mobility of Polyelectrolytes. (I) : Electrophoretic Mobility of Polyvinyl Alcohol

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