巻号一覧
13 巻, 3 号
選択された号の論文の11件中1～11を表示しています
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第6報 綿繊維の生長過程におけるリントの結晶領域の変化について大野 泰雄1957 年 13 巻 3 号 p. 127-129
発行日: 1957/03/10
公開日: 2008/11/28
ジャーナル フリーIn order to make clear the formation of cellulose chain molecule and its aggregate state, the amount of crystalline region and the average degree of polymerization of crystalline region (the length of crystalline particle) in lint during the growing process of cotton fiber were daily measured. The cotton variety used for this research was “Rikuchimen Kanno No.1, ” a sort of upland cotton. Maeda's method of acid hydrolysis was used for the measurement of amount of crystalline region. The amount of crystalline region in lint shows constant value (78-82%) and the length of crystalline particle also shows constant value (130-140 as the degree of polymerization in glucose rest.) from the day when wall thickening just begins, until the day when boll openning just finishes.
From above experiments and the observations by electron microscope, it may be concluded that the micell or microfibrill generates in cell on the same aggregate state from the day when wall thickening just begins and deposits inside the wall of lumen, and the growth of wall thickeness daily proceeds.抄録全体を表示PDF形式でダウンロード (285K) -
森 昇, 田中 毅1957 年 13 巻 3 号 p. 130-134
発行日: 1957/03/10
公開日: 2008/11/28
ジャーナル フリーThe demixing of the solution of the mixture of polyvinyl alcohol and its derivatives such as polyvinyl formal, polyvinyl cyanoethylether and partially saponified polyvinyl acetate was studied, and was found that it was influenced by the kind of substituent, the degree of substitution and the ratio of two polymers.
The nature of fibers spun from the solutions, such as the cross sectional forms and dyeability was influenced greatly by the demixing in the fiber structure.抄録全体を表示PDF形式でダウンロード (1229K) -
清水 周, 奥 正巳1957 年 13 巻 3 号 p. 135-138
発行日: 1957/03/10
公開日: 2008/11/28
ジャーナル フリー1) The solubility of wool has been studied in 0.1N NaOH and 0.1N KOH at 56°C each containing NaCl, KCl, KBr, KI, KNO3, NaNO3, K2SO4, or Na2SO3,
The solvent power of electrolytes is stronger in its relatively lower concentration and maximum solubility almost depends on Hofineister's series. But when NaOH contains NaCl, Na2SO4, or NaNO3 and KOH contains NaCl, KCl or Na2SO4, the solubility of wool is less than that in the absence of these electrolytes.
2) When ionic strength is below 1.8, the solubility of wool with alkali containing some electrolytes may be satisfactorily described in terms of the empirical equation;
where S is the solubility, S0 the solubility in the absence of electrolytes and K1, K0 is constant.抄録全体を表示PDF形式でダウンロード (269K) -
第3報 絹の黄褐変機構について岡本 奨, 今井 其枝1957 年 13 巻 3 号 p. 139-143
発行日: 1957/03/10
公開日: 2008/11/28
ジャーナル フリーOn the mechanism of the yellowing of silk by the sunlight, it was reported recently by Chujo that tyrosine contained 13-14 per cent in silk fibroin was changed into the indole derivatives and then into melanin-like pigments photochemically. This theory however deserves further investigations.
We recognized that tyrosine was easily decomposed in the diluted hydrogen peroxide solution at room temperature, while tryptophan, especialy its indole-ring, was more stable for it. So the silk cloth was dipped in the diluted hydrogen peroxide solution to make tyrosine in it decompose, and was exposed to ultraviolet radiation. The exposed cloth was sifted by means of the rate of yellowing and the reactions for the colouring matters such as nitric acid or Ehrlich's reagent.
These changes were compared with those of the oxidized wool as well as the formalized silk or wool. While, tyrosine and tryptophan fixed on the rayon cloth by polyvinylalcohol were also exposed to light and their changes were detected by paper chromatographic method.
It may be conclueded that the changing process proposed by Chujo does not coincide with the various results obtained in this experiments, and that the leading cause of the yellowing is not attributed to the changes of tryosine, but to tryptophan although the amount contained in silk fibroin is very little.抄録全体を表示PDF形式でダウンロード (412K) -
第4報 異繊度スフ混紡における混紡むらおよび糸むらについて上野 清一郎1957 年 13 巻 3 号 p. 144-147
発行日: 1957/03/10
公開日: 2008/11/28
ジャーナル フリーOn the interaction of rayon s. f. with dfferent denier, the blended yarns with various counts of two and three component systems have been used. The results obtained are as follows:
(1) As far as same proportion of blend is concerned, the component fibres with the finer denier have greater influence to others as the yarn becomes finer.
(2) The thicker denier fibres may have greater blend variance than the finer in same proportion of blend, and any denier fibres may have maximum variance near 50% blend.抄録全体を表示PDF形式でダウンロード (298K) -
第2報 織物剪断変形機構のモデル的解析呉 祐吉, 篠原 昭, 松橋 房江1957 年 13 巻 3 号 p. 148-151
発行日: 1957/03/10
公開日: 2008/11/28
ジャーナル フリーWe analysed a shearing deformation behaviour of fabriclike model, which was made of rubber strings (warp direction) and glass rods (weft direction), by the dynamical method described in a previous paper. It was found that the relationship between the properties of model elements and the one of glass rods may be shown by the formula.
Where f: the numbers of rubber strings, n-1: no_??_ of glass rods, l: an interval of glass rod in cm, A: contact area between glass rod and rubber string in cm2, E: young's modulus of rubber string in dyne cm-2, and Es: apparent shear modulus of fabric shear in dyne.
The contact area was determined by means of Finch's method i.e. carbon black coating method and Heltz's theoretical calculus.
From this result, we obtain some useful hints for the analysis of more complicated cases as apparel fabfics.抄録全体を表示PDF形式でダウンロード (291K) -
玉井 重威1957 年 13 巻 3 号 p. 152-158
発行日: 1957/03/10
公開日: 2008/11/28
ジャーナル フリーThe circular condenser which contains variable electric resisting plates made of dielectric matter, having large enough electric capacity, is inserted between the cathode and suppressor grid in an electron tube and a stable circuit is equipped, having one edge of an interpole connected to the edge of the suppressor grid and another edge suffering the action of electric field of change body, thereupon some displacement current is made to cause by transition-phenomena at the electrostatic influence period, and the electron tube is given some minus power which is not relative to the plus or the minus of the charge body but is in proportion to its quantity. Thus investigation is aimed to make it clear that the relation between the quantities of electricity and the electric denisity of the field which will vary with time by the strength of plate current.抄録全体を表示PDF形式でダウンロード (1217K) -
第1報 縮合リン酸ソーダによる練減について平田 行, 小林 正光1957 年 13 巻 3 号 p. 159-164
発行日: 1957/03/10
公開日: 2008/11/28
ジャーナル フリーThe effects of condensed sodium phosphates, sodium metasilicate and soap on the degumming of _??_aw silk were investigated.
As condensation salts, sodium pyrophosphate, sodium triphosphate and sodium metaphosphate glass were used.
The pH values, the permeating rate and the sericin dissolving power of phosphates, silicate and soap were measured at the same concentration and temperature respectively.
The results showed that the pH values of phosphates were lower than those of silicate and soap, the permeating rate of phosphates was greater than that of soap and smaller than that of silicate, and the dissolving power of silicate was the greatest and that of soap the smallest.
Below 70°, the solutions of phosphates and soap showed little or no dissolving power for sericin, but the solution of silicate dissolved sericin considerably.
Treated by soap below 70°, the weight of silk was increased by the contaminations of free fatty acid or metallic soap.
The functions which affect the dissolving power for sericin are considered to be pH values and permeating rate of the degumming reagents; but further investigations have to be made to make clear the mechanism of the reaction between phosphates and sericin, (These are to be reported later.)
To conclude, risks are seen in either case (1) of dissolving a part of fibroin when treated with metasilicate solutions or (2) of contamination by fatty acid or metallic soap when treated with soap solution. The condensed phosphates, therefore, are considered to be better degumming reagents for silk.抄録全体を表示PDF形式でダウンロード (970K) -
分散性酢人染料染布について吉田 皆蔵, 橋本 健1957 年 13 巻 3 号 p. 165-169
発行日: 1957/03/10
公開日: 2008/11/28
ジャーナル フリーIn experiments on the effect of disperse acetate colours on the tendering of nylon 6 by exposure to light, aminoanthraquinone dyes increased the degree of tendering, while azo dyes decreased it.
No relation was found between the light absorption of dyes and the degree of tendering. Correlation was found, however, between tendering and fading, when dyes were devided into two groups, a minoanthraquinone dyes and azo dyes.
Experiments on the action of anthraquinone derivatives suggested that the photosensitivity of anthraquinone dyes is mainly due to their anthraquinone nucleus.抄録全体を表示PDF形式でダウンロード (292K) -
II 酸性媒染染料による染色の影響岡島 三郎, 菊池 京子1957 年 13 巻 3 号 p. 170-174
発行日: 1957/03/10
公開日: 2008/11/28
ジャーナル フリーThe effect of the mordant-dyeing upon the set-abilities of the wool fibers was examined; Neolan Brown GRM, Chrome Brown RH and Eriochrome Azurol B were used as the dyes.
In the case of Neolan Brown GRM, the set-abilities decreased a little as in the cases of the acid dyes reported previously (Part I). In this experiment the desorption of dyes was not observed during the setting. The effects of Chrome Brown RH and Eriochrome Azurol B were more remarkable than that of Neolan Brown GRM, but the effect is supposed to be negligibly slight in the concentration ranges of dyes and mordants used commercially.
As the mordant Cr2(SO4)3 was also examined instead of K2Cr2O7, but its effect is remarkably inferior to the latters.抄録全体を表示PDF形式でダウンロード (350K) -
田畑 昌顕1957 年 13 巻 3 号 p. 175-180
発行日: 1957/03/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (483K)
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