Nukushina, Yasuhiko

Sakurada, Ichiro

Kyoto University Research Information Repository

Title Studies on Copolymers of Vinyl Chloride and Vinyl Acetatewith an X-Ray CounterAuthor(s)Nukushina, Yasuhiko; Sakurada, IchiroCitationBulletin of the Institute for Chemical Research, KyotoUniversity (1953), 31(6): 426-426Issue Date1953-11-30URL http://hdl.handle.net/2433/75378RightType Departmental Bulletin PaperTextversionpublisherKyoto University 8. Studies on Copolymers of Vinyl Chloride and ' Vinyl Acetate with an X-ay Connt a                 Yasuhiko NUKUSHINA and Ichiro SAKURADA                           (Sakurada Laboratory)Copolymers of vinylchloride and vinyl acetate have been prepared and fractionated in this laboratory and several fractions of different compositions have been investi-gated with an X-ray counter spectrometer mentioned in the above report.    It has been found that the change of spacings takes place with the change of copolymer composition. The results are given below.             Content of V. C.Specing (A° )                                                    in polymer. mol % "" Inner halo Outer halo      1005.213.56 96.75.213.56 61.95.373.70 41.35.533.86 22.45.533.86      06.803.95        9. On the Bulk Volume of Some Clay-Air-Water System                     Kaoru UMEYA and Iktitaro SAWAI                              (Sawai Laboratory)   The relation between the molding pressure and bulk volume of the clay-air-water system in some clay bodies was studied.    The typical pictures of the bulk volume at the different molding pressures, i.e., 8 and 80 kg./cm'. are given in the following figure.                         200                    190 180` ., !r*g__ 170 O 160 150 14c, h ~ 130r.. A 120 11. 1o0                       0 10 20 30 40 50 6o 70 8o go No                           Water Content (cc/clay 100)(426)

Studies on Copolymers of Vinyl Chloride and Vinyl Acetate with an X-Ray Counter

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Studies on Copolymers of Vinyl Chloride and Vinyl Acetate with an X-Ray Counter

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