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Volume 12, Issue 10
Displaying 1-11 of 11 articles from this issue
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Ayao Amemiya1956 Volume 12 Issue 10 Pages 685-688
Published: October 10, 1956
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSDownload PDF (325K) -
(5) THE CONTENT OF PECTIC SUBSTANCE IN LINT DURING THE GROWING PROCESS OF COTTON FIBERYasuo Ono1956 Volume 12 Issue 10 Pages 689-692
Published: October 10, 1956
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSThe weight percent and absolute weight of pectic acid, instead of pectic substance, in lint during the growing process of cotton fiber were daily measured in order to make clear the distribution of pectic substance in cotton fiber. From this series of experiments, it may be concluded that the pectic substance is also the surface constituents of cotton fiber and exists only in the primary wall of the cotton fiber and can not be found in appreciable amount in the inner structure of cotton fiber, i. e. the secondary wall of cotton fiber. The pectate content in cotton fiber is directry proporional to the content of wax, surface constitutents of cotton fiber, and is also constituents of the primary wall. The relationships between pectic substance and the formation of cellulose is also discussed.View full abstractDownload PDF (318K) -
(XIV) INFLUENCES ON THE PROPERTIES OF THE FIBER BY THE CONDITIONS TO THE FIBER FORMATION IN THE WET SPINNING OF POLYVINY-LCHLORIDE-TETRAHYDROFURAN SOLUTIONTamio Yoshioka1956 Volume 12 Issue 10 Pages 693-700
Published: October 10, 1956
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSInfluences on the mechanical properties of the fiber by the fiber formation were studied to find the conditions of the industrial manufactures of the fiber which is prepared by spinning polyvinyl-chloride-tetrahydrofuran solution into water and the following results were obtained.
(1) By change of spinning speed at the constant volume of exclusion, the change of denier accord with the theoretical value; tensile strength (g) shows nearly the constant value even if the denier is decreased, so, tensile strength (g/D) increases as the effect of decrease in denier, and elongation decreases in proportion to the draft between 2 and 4.
(2) By change of the volume of exclusion, denier, tensile strengtn (g) and tenacity (g/D) show have almost the same results as by the change of the spinning speed but elongation shows the maximum at the draft 2.5.
(3) At the constant draft adjusting the relations between the spinning speed and the volume of exclusion, denier, tensile strength (g) tenacity (g/D) and elongation show respectively the maximum at the spinning speed 25-30m/min. and 2.5 sec. of time passing through the congulation bath.
(4) In the fixed condition of the heat-drawing process industrialy, high draft, spinning speed 20-25m/min. and the passing of more than 2.5 sec. through the coagulation bath are produce more satisfactory results; for the maximum drawing draft 2.5, spinning speed 25-30m/min. and 2.5 sec. in the coagulation bath are better.View full abstractDownload PDF (1353K) -
(XV) INFLUENCES ON THE PROPERTIES OF THE FIBER BY THE POLYME-RIZATION DEGREE OF THE SPINNING SOLUTIONS IN THE WET SPINNING OF POLYVINYLCHLORIDE-TETRAHYDROFURAN SOLUTIONTamio Yoshioka1956 Volume 12 Issue 10 Pages 700-703,693
Published: October 10, 1956
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSInfluences of the polym. degree (600-2100) of P. V. C. on the mechanical properties of the fiber prepared by the conc. P. V. C. solution in spinning into water were studied and the following results were obtained. In the _??_, 600 and 2100 there is no spinability, but spinable at _??_ 800-1900. Denier shows almost the same value at the 400% drawing in each _??_, though in the draft and the 200% drawing it shows different tendencies with each _??_.
Tensile strength (g) and (g/D) show the larger values in the higher _??_ and elongation shows the small value in the draft only, but in the 400% drawing in tends to show the same value. In the ratios of knot strength and elongation by influences of the draft, the rate of decrease is larger in the low _??_ and smaller in the high _??_ by the 400% drawing.View full abstractDownload PDF (326K) -
(XXIV) ON THE MECHANICAL PROPERTIESMasamichi Katayama1956 Volume 12 Issue 10 Pages 704-711
Published: October 10, 1956
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSThe mechanical properties of P. A. N fibers and Co-polymer fibers were studied, and it was shown that the Bu OH-D. M. F spinning system is an excellent method, for instance, high tenacity (>3g/den) fiber can be spun from ηsp/C=0.075 (lgr P. A. N/1, 000cc D. M. F, 30°C) polymer and the other properties are same as these of “Orlon” and “Acrilan”View full abstractDownload PDF (562K) -
(XXIV) ON THE CHEMICAL PROPERTIESMasamichi Katayama1956 Volume 12 Issue 10 Pages 711-719,704
Published: October 10, 1956
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSThe chemical properties of pure P. A. N fibers and Co-polymer fibers were studied with the following results;
1) HNO3 has bleaching action
2) AAm Co-polymer fibers treated with HCl (>20%) can be dyed with acid colors
3) AA (CH2 CH-COOH) Copolymer treated with Amine compounds shows good dyeability to Acid dryesView full abstractDownload PDF (778K) -
(XI) MATHEMATICAL EXPRESSION OF A COMPRESSION-RECOVERY BEHAVIOR OF A BULK OF ANGORA RABBIT FURSSaburo Okajima, Sakio Ikeda1956 Volume 12 Issue 10 Pages 720-726
Published: October 10, 1956
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSDownload PDF (431K) -
(1) CHEMICAL OBSERVATIONSItaru Shimizu, Shoichi Kobayashi1956 Volume 12 Issue 10 Pages 727-731
Published: October 10, 1956
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSChemical investi_??_ations were carried out on wool of sheep parasitized by flukes.
The comparison of the results of the study on the Australian merino wool with 13 kinds of Japanese wool are summarized as followe;
1) Kempy wool content in the inflicted wool is higher than in the merino.
2) Grease content is poorer than in the merino.
3) Total nitrogon and diamino acid-nitrogen contents are poorer, but amide-nitrogen and mono amino acid-nitrogen contents are richer than in the merino. Total sulfur content is somewhat poorer and tyrosine content lies between 3.3 and 6.4%.
4) Affinity of acid color on Japanese wool is smaller, and that of basic color varies in some cases. Acid combining capacity relates to the affinity of basic color on Japanese wool.View full abstractDownload PDF (368K) -
III. EFFECT OF THE TEMPERATURE UPON CRABBINGSaburo Okajima, Tetsuo Inoue1956 Volume 12 Issue 10 Pages 732-736
Published: October 10, 1956
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSThe effect of temperature upon crabbing was examined on the model plant in which the temperature was controlled at 77, 92 and 100°C and pH of the water was kept constant at 8.5, 9.2 and 9.5 in each case. The effect of the crabbing was apraised by determining the decrease of the lustre of the fabric treated by steam. The results are:
(1) The higher the crabbing temperature, the more lustrous is the fabric,
(2) and the more effective is the permanent-set at each pH-value.
(3) The effect of the crabbing is the highest at pH 9.2_??_9.5 even at the lower temperature.
(4) The fabric yellows slightly by the treatment at 100°C and at the higher pH but the crabbing at 77°C_??_does not show any yellowing even at pH 9.2_??_9.5.View full abstractDownload PDF (335K) -
IV. PERMANENCY OF THE LUSTRE OF THE FABRIC PRESSED IN THE AIR-DRIED STATESaburo Okajima, Tetsuo Inoue1956 Volume 12 Issue 10 Pages 736-739,732
Published: October 10, 1956
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSThe pressing the fabric in the air-dried state also raises its lustre, but the lustre is only temporary, and it lowers almost completely to the original amount when the fabric is released in the steam. This effect of pressing is a function of the moisture content in the fabric treated, and there is found a critical moisture content (14_??_15%) in this experiment above which the lustre remains remarkably permanent.
The permanency of the lustre is also high even in ease the fabric is slightly alkalined.View full abstractDownload PDF (851K) -
Temperature Dependency of Mechanical Prope_??_tiesHeihachiro Ito1956 Volume 12 Issue 10 Pages 740-747
Published: October 10, 1956
Released on J-STAGE: November 28, 2008
JOURNAL FREE ACCESSDownload PDF (459K)
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