巻号一覧
17 巻, 8 号
選択された号の論文の15件中1～15を表示しています
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辻 和一郎1961 年 17 巻 8 号 p. 719-724
発行日: 1961/08/10
公開日: 2008/11/28
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森本 佐一1961 年 17 巻 8 号 p. 725-731
発行日: 1961/08/10
公開日: 2008/11/28
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小川 伸, 中原 昌孝1961 年 17 巻 8 号 p. 732-737
発行日: 1961/08/10
公開日: 2008/11/28
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高橋 富雄1961 年 17 巻 8 号 p. 737-740
発行日: 1961/08/10
公開日: 2008/11/28
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林 庄太郎1961 年 17 巻 8 号 p. 740-743
発行日: 1961/08/10
公開日: 2008/11/28
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白樫 侃, 小口 登, 平山 順之1961 年 17 巻 8 号 p. 744-752
発行日: 1961/08/10
公開日: 2008/11/28
ジャーナル フリーIn the previous paper, the yarn axis crimped in the fabric was assumed to be expressed by the following equation which contains an important parameter n. Here l is the length of a quarter of crimp measured along x-axis, which is the direction of tension and a is its amplitude. This shape of the yarn axis is also applied to crimped fiber. Using the above equation, the strain energy U of the crimped fiber is obtained. The deflection in the direction of the force is deduced from Castigliano's theorem. By expansion using binomial series, the initial resistance of the crimped fiber is obtained, but it is not useful for practical problems, as it is in too complicated form. Introducing m, which depends upon a, l and n, the practical equation of the initial resistance is obtained. These results are shown in equation (22). This theoretical equation was discussed by using the crimped model filament. The constant EI for three model filaments with the same EI but with various crimps was not constant when calculated from Van Wyk's theory, but it was constant from the author's theory.抄録全体を表示PDF形式でダウンロード (908K) -
第3報 ストレッチヤーンの伸長によるかさ高性の変化川崎 健太郎, 林 鈴子1961 年 17 巻 8 号 p. 753-758
発行日: 1961/08/10
公開日: 2008/11/28
ジャーナル フリーThe change of bulkiness with extension of stretch yarns was studied by the optical method proposed in the previous report1).
The following conclusions were obtained.
1) The change of bulkiness can not be expressed by Fr. Fourné's equation2), which was formerly proposed.
kD=√1-x2
k: constant
x: crimp length (ratio of crimp length to its fully extended length)
D: apparent diameter of yarn
but it is expressed by the following empirical equation,
Rr=αe-βx+R0
Rr: reduced radius of yarn1),
α, β and R0 are morphological characteristic constants of each yarn and they relate to respectively, bulkiness, the change of bulkiness with extension, and radius of filament yarn,
2) α and β of stuffing yarn are larger than those of torque yarn (Woollie Nylon); i.e. the rich bulkiness and large change of bulkiness by stretch are characteristic of stuffing yarn.抄録全体を表示PDF形式でダウンロード (367K) -
第15報 CLUSTER補遺ならびに本研究の総括上野 清一郎1961 年 17 巻 8 号 p. 759-763
発行日: 1961/08/10
公開日: 2008/11/28
ジャーナル フリーAs a supplement of the consideration on the cluster in previous report, now the cluster was studied on the basis of the theory of run. From the result, considering by a principle of blend distribution which separates component fibres to one by one as possible, the actual process of the blend may be at least more suitable than the attempt by which the fibres are arranged at random only final without such a process.
In conclusion, the results of author's studies were summarized. In short, although, up to present, the relations between blend percentages and physical properties of blended yarns have been investigated from the point of view of mean value, in author's studies this subject was mainly discussed from the point of view of variation and a suggestion in using blended yarns was given from those systematic experiments of blend distribution.
However, the problem of blend may finally be connected with the properties of fabrics, especially with the variation of the shade of color, and so further studies of this field will be desirable.抄録全体を表示PDF形式でダウンロード (410K) -
その1 漂白工程におけるヘミセルロースおよびリグニンの挙動戸田 久昭, 木島 常明1961 年 17 巻 8 号 p. 764-772
発行日: 1961/08/10
公開日: 2008/11/28
ジャーナル フリーSoftwoods (spruce+fir, and fir only) and hardwoods (mixed hardwood, and birch only) unbleached sulphite paper grade pulps were bleached with three-stage processes (chlorination, caustic extraction, hypochlorite) and a comparison was made on behavious of softwood and hardwood sulphite pulps during the bleaching.
1) In comparison with softwood unbleached sulphite of the same Sieber number, hardwood sulphite pulps were lower in the bleaching loss (Fig. 1), and higher in brightness of bleached pulp (Table 1 and 2) and consumption of caustic soda (Fig. 2). The yields of boths oftwood and hardwood bleached pulps were lower than those expected from their lignin contents calculated from Sieber number of unbleached pulps.
2) The loss of xylan and mannan in pulps during bleaching process were very small and total amounts of them were about 0.2% in both softwood and hardwood unbleached pulps (Sieber number about 52) (Table 5). The dissolved carbohydrate materials were mainly xylan in the case of hardwood pulp, while considerable amount of mannan was found in addition to xylan in the case of softwood pulp. Considerable amounts of uronic acids were also removed during these treatments and the loss mounted to 20-30% of original uronic acid contents of both softwood and hardwood unbleached sulphite pulps (Table 3 and 4).
3) Lignin contents of unbleached pulps were determined UV-absorptiometrically on phosphoric acid solution. It was shown that the lignin content of the herdwood unbleached sulphite pulps was about 20% less than that of softwood unbleached sulphite pulps of the same Sieber number (Fig. 5 and 6). It seems that the difference in the yield of softwood and hardwood bleached sulphite pulps was mainly due to the difference in the lignin contents.
4) The amounts of lignin eliminated from unbleched sulphite pulps were determined UV-absorp-tiometrically in the bleaching process. Lignin in unbleached hardwood sulphite pulp was easier to remove than that of softwood pulp during caustic extraction after chlorination (Fig. 8) and hypochlorite bleaching. Considerable amount (about 35%) of the former was also removed even by 1% NaOH extraction at 20°C for 1 hr. (Fig. 9)抄録全体を表示PDF形式でダウンロード (657K) -
その2 未さらしパルプ中のアルカリ消費性物質について戸田 久昭, 木島 常明, 浜田 忠平1961 年 17 巻 8 号 p. 772-777,765
発行日: 1961/08/10
公開日: 2008/11/28
ジャーナル フリーHardwood unbleached sulphite pulps consumed more caustic soda than softwood pulps during caustic extraction in bleaching process. This investigation concerns this problem.
The results of conducto-and potentiometric titrations of spent caustic extraction liquors (Fig. 1), and gas-chromatographic analysis of the same liquors (Fig. 7) and hydorolysates of these pulps show that the difference in the consumption of caustic soda is due to the difference of acetyl group contents in the both unbleached pulps. Acetyl group contents of hardwood unbleached sulphite pulps (47-55% of total cooking yield) are 0.6-1.0%, while only about 0.1% in softwood unbleached pulps.
In the bleaching process, these acetyl groups in unbleached sulphite pulps were not or little removed by chlorination (Fig. 5 and 6), but most parts were removed by caustic extraction. Therefore, acetyl groups cannot be found in bleached sulphite pulps.
The acetyl groups in unbleached sulphite pulps were nearly completely removed by 1% NaOH extraction (20°C, 1 hr.) or bisulphite-soda cooking. By those processes the amotnts of caustic soda consumed in bleaching of hardwood unbleached sulphite pulps decreased greatly to that of softwood unbleached sulphite pulps of the same Sieber number (Table 1, Fig. 3, 4 and 8).
It seems that the acetyl groups combine with xylan existing in amorphous region of unbleached sulphite pulps.抄録全体を表示PDF形式でダウンロード (522K) -
第4報 液相酢化綿布の諸性質におよぼす触媒種類の影響辻 和一郎, 北丸 竜三, 今井 政三1961 年 17 巻 8 号 p. 778-783
発行日: 1961/08/10
公開日: 2008/11/28
ジャーナル フリーThe influence of the difference in the sorts of acetylating catalyzer upon the properties of the acetylated cotton fabrics was studied, Some influences were observed, although they were not great.
For example, the acetylated cotton fabrics prepared by ZnCl2 catalyzer have better acid-resistance and lesser solubility in chloroform, and those prepared by HClO4 catalyzer have more water-and moisture-absorbency than those prepared by other catalyzers.抄録全体を表示PDF形式でダウンロード (1266K) -
第5報 ポリ酢酸ビニルのケン化エーテル化-段階法 第6報 ポリビニルヴリコール酸エーテルの性質飛田 昌雄1961 年 17 巻 8 号 p. 784-793
発行日: 1961/08/10
公開日: 2008/11/28
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第1報 合成とその反応について岩倉 義男, 手塚 義郎1961 年 17 巻 8 号 p. 794-798
発行日: 1961/08/10
公開日: 2008/11/28
ジャーナル フリーPolyoxyethylene dichloroformates were prepared by phosgenation of polyethylene glycols. Then, dimethylene, dioxyethylene, trioxyethylene and polyoxyethylene (600) N, N, N′, N′-bis-ethylene-urethanes were prepared by the reactions of polyoxyethylene dichloroformates with ethylenimine in ether or benzene using triethylamine as dehydrochloric acid agent. These bis-ethylene-urethanes reacted with thiophenol or hydrochloric acid to give the corresponding addition compounds. It is expected that the bis-ethylene-urethanes will be used as a cross-linking agent of cellulose.抄録全体を表示PDF形式でダウンロード (387K) -
第2報 水中合成法手塚 義郎1961 年 17 巻 8 号 p. 798-801,794
発行日: 1961/08/10
公開日: 2008/11/28
ジャーナル フリーDimethylene, dioxyethylene, trioxyethylene and polyoxyethylene (600) N, N, N′, N′-bis-ethylene urethanes were prepared by the reaction of corresponding polyoxyethylene dichloroformates with ethylenimine in aqueous solution using Na2CO3 or (NH4)2CO3 as dehydrochloric acid agent.
It was proved that the yield of these bis-ethylene-urethanes prepared in water was good as shown by determination of the yield by addition compounds prepared from these bis-ethylene-urethanes in aqueous solution and hydrochloric acid, while the yield of bis-ethylene-urethanes isolated as pure products was lower. Preparation of these bis-ethylene-urethanes in water is advantageous, when they are used for cellulose treatment as their aqueous solution.抄録全体を表示PDF形式でダウンロード (340K) -
手塚 義郎1961 年 17 巻 8 号 p. 802-806
発行日: 1961/08/10
公開日: 2008/11/28
ジャーナル フリーReactions of octadecyl ethylene urea and water-repellent effect of derivatives of octadecyl isocyanate were studied.
Octadecyl ethylene urea reacted with nucleophilic agents openning the ethylene imino ring at lower temperature, while at higher temperature it reacted as octadecyl isocyanate which was formed by the decomposition of octadecyl ethylene urea. It was supposed that the reactions of the above two types with cellulose would proceed, when cellulose treated with octadecyl ethylene urea was cured.
As octadecyl isocyanate derivatives, N-octadecyl phenyl urethane, sodium bisulfite adduct, octadecyl urea, dioctadecyl urea and octadecyl isocyanate trimer were prepared. It was found that these derivatives reacted with cellulose at higher temperature as octadecyl isocyanate which was formed by the thermal decomposition, and accordingly viscose rayon fabrics treated by the derivatives had water-repellent property. But the water-repellency was not so remarkable.抄録全体を表示PDF形式でダウンロード (373K)
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