Journal of the Japanese Technical Association of the Pulp and Paper Industry
Online ISSN : 1884-4731
ISSN-L : 0370-0313
Volume 7, Issue 3
Displaying 1-10 of 10 articles from this issue
  • Ryoiti Senzyu, Isao Sakata, Kitsuji Nishida
    1953 Volume 7 Issue 3 Pages 166-170,241
    Published: June 20, 1953
    Released on J-STAGE: November 10, 2009
    JOURNAL FREE ACCESS
    Die bisherigen Forscher haben sich vergebens anstrengt, von verschiedenen aromatischen Aminen ein gutes Fallungsmittel zu entdecken. Diese Misserfolge kommen daher, dass die bisher geprüften Amine alles ausnahmsloss niedermolekulare Verbindungen sind. Solange man daher als Fällungsmittel für Ligninsulfonsäure das niedermolekulare Amin wie aromatisches Amin wählt, wird es, wie man auch sich bemüht, nicht gelingen, ein geeignetes Fällungsmittel zu entdecken. Von diesem Gesichtpunkt aus wählte ich als Fällungsmittel ein hochpolymeres Amin (Glykol-Chitosan), dessen Poiymerizationsgrad etwa 600 war, und es ist mir gelungen, die Ligninsulonsdure in Ablauge bis auf b-Ligninsulfonsäure quantitativ (Empfindlichkeit über 4 Gamma) fallen zu lassen und sie titrimetrisch schnell und genau zu bestimmen. Das Prinzip dieser Kolloidtitration besteht darin, dass man eine bestimmte Menge der Glykol-Chitosan-losung in Ablauge hinzufugt und das unverbrauchte Glykol-Chitosan mit polyvinylalkoholschwefelsäure Kalium (P.V.S.-K) gegen Toluidinblau zuriicktitriert. Wenn man vorher das Aquivalentgewicht der Ligninsulfonsaure gegen Aminogruppe, das im allgemeinen bei üblichen Kochprozessen konstant (etwa 380) ist, weiss, so kann man gleich aus Polyaminverbrauch den Ligninsulfonsauregehalt von Probelosung rechnen.
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  • Ryoiti Senzyu, Motohiro Shimizu, Kitsuji Nishida
    1953 Volume 7 Issue 3 Pages 170-174,241a
    Published: June 20, 1953
    Released on J-STAGE: November 10, 2009
    JOURNAL FREE ACCESS
    In dem bei Gesamtcellulosebestimmung erhaltenen Waschabfall ist das Gesamtlignider Probe als Chlorlignin (genauer gesprochen Chlorligninsulfonsäure) gelost. Konnte man deshalb die Chlorligninsulfonsaure in der Losung bestimmen, so wird es gelingen, die Cellulose und das Lignin von Probe gleichzeitig zu ermitteln.Diese Ziel wurde zum erstenmal von uns erreicht.
    Nach Cross und Bevan lost man zuerst durch Wechselwirkung von Chlorgas und Natriumsulfit das Lignin von Probe vollständig heraus. Dazum ist es schon genug die zweimaligen Wechselwirkung von Chlorgas und NatriumsulfitiOsung. Die so erhaltene Chlorligninsulfonsäure-Losung wurde mit Ammoniak alkalisch gebracht und darauf auf 200 ccm aufgefüllt. Man gab in 10 ccm davon 15 ccm n/100-M. G. Ch.-Losung zu, und das restliche Amin wurde mit n/400-P. V. S.-K-Losung gegen Toluidinblau zurücktitriert.Annähme man, dass die 72% ige Schwefelsäure-Methode den echten Ligningehalt liefert, so erhält man als Aquivalentgewicht von Lignin der verschiedenen Holzarten die Ziffern in Tabelle 1 Spalte 8. Da das Aquivalentgewicht von Nadelholz-, Laubholz-und Bambuslignin sind 147, 182 und 188, so kann man gleich aus Polyaminverbrauch von Probelosung den Ligningehalt von Probe rechnen.
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  • H. Imai, M. Morimoto
    1953 Volume 7 Issue 3 Pages 174-178,242a
    Published: June 20, 1953
    Released on J-STAGE: February 10, 2010
    JOURNAL FREE ACCESS
    In consequence of some chemical analysis of “Kurokawa” and “Amakawa (structure under cuticle layer)” of Mitsumata and Kozo, we confirmed the fact that the alcoholbenzene extract was much in “Amakawa” of the phloem of them.
    According to the above result and the consideration about the phloem, we suggested theoretically that the surface active agents were to be effective on the loosening and peeling of the outer bark of it, therefore we carried out laboratory and industrial experiments and found the new effective loosening and peeling method of applying surface active agents instead of the former manual primitive method.
    On the laboratory test, we used the following surface active agents and obtained good results. - Mikesoap as a commercial soapless soap, alkyl benzene sulphonate as an anionic agent, alkyl polyester alcohol as a nonionic agent, cetyl trimethyl ammonium chloride as a cationic agent.
    On the industrial trial, in case of Mitsumata, we used the commercial soapless soap and the most suitable industrial treating condition given by authors is as follows.
    Treating temperature 70 - 120°C
    Amount of soapless soap 5 - 11% to “Kurokawa”
    Amount of water 7 - 15 parts to “Kurokawa”
    Treating time about 60 minutes
    Then the yield of available fibres from “Kurokawa” increased about 5% in comparison with the former method.
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  • Masao Tayama, Shukuro Ishikawa
    1953 Volume 7 Issue 3 Pages 178-182,242b
    Published: June 20, 1953
    Released on J-STAGE: November 10, 2009
    JOURNAL FREE ACCESS
    In Japan, about 35, 000 to 40, 000 cords of camphor tree (Cinnamomum camphor Sieb.) are consumed for extracting camphor in a year. And the wood after extracting camphor is utilized for the fuel only.
    When this was cooked by the neutral sulphite semichemical pulping method, we found this pulp can be used for paper.
    And when camphor tree was cooked, we can extract the camphor and the camphor oil at the time of recovering liquor and blow.
    The results of experiment are outlined as follows :
    1). The chips were cooked by the impregnation method, and the ratio of Na2SO3to NaHCO3in the impregnation liquor was 7 : 1.
    2). When the wood after camphor extraction was cooked, the chemicals consiumed in the cooking were about 12% based on the oven dry chip, and the yield was 78 to 79%. And when the original wood was cooked, the chemicals were consumed 13% to 15% and the yield was about 77%.
    3). There was not a difference of properties between these two pulps, and both have an available paper strength.
    4). Fig. shows the apparatus for the camphor extraction. At the time of recovering liquor and blow, the same operation was done. The recovered liquor (the waste liquor) was led to the flask at first. At this time, a part of liquor contains the camphor and the camphor oil goes into the flask as a form of vapour, for even the temperature of recovered liquor as high as 120°C. By this reason, the camphor and the camphor oil are steam-distilled from the liquor spontaneously. In this way, we can extract the camphor and camphor oil perfectly, especially the former, simulataneously with pulping.The properties of camphor and camphor oil extacted by this way remain the sameas that extracted by the normal steam-distillation.
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  • Torn Hanzawa
    1953 Volume 7 Issue 3 Pages 182-188,243a
    Published: June 20, 1953
    Released on J-STAGE: February 10, 2010
    JOURNAL FREE ACCESS
    The experiment on Red Pine in Akita-ken to investigate the best season for cutting and necessary time for seasoning from the points of resin contents of raw woods and unbleached or refined pulp was made.
    The following conclusion was resulted-the cutting is the most effective in the warm season and the necessary time for seasoning is 4-8 months for woods cut in the warm season and over 8 months at least in the cold season.
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  • [in Japanese]
    1953 Volume 7 Issue 3 Pages 189-193
    Published: June 20, 1953
    Released on J-STAGE: November 10, 2009
    JOURNAL FREE ACCESS
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  • [in Japanese]
    1953 Volume 7 Issue 3 Pages 193-200
    Published: June 20, 1953
    Released on J-STAGE: November 10, 2009
    JOURNAL FREE ACCESS
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  • [in Japanese]
    1953 Volume 7 Issue 3 Pages 200-202
    Published: June 20, 1953
    Released on J-STAGE: November 10, 2009
    JOURNAL FREE ACCESS
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  • 1953 Volume 7 Issue 3 Pages 203
    Published: June 20, 1953
    Released on J-STAGE: November 10, 2009
    JOURNAL FREE ACCESS
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  • 1953 Volume 7 Issue 3 Pages 215
    Published: 1953
    Released on J-STAGE: November 10, 2009
    JOURNAL FREE ACCESS
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