巻号一覧
45 巻, 6 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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Sang S. Song, James L. White, Mukerrem Cakmak1989 年 45 巻 6 号 p. 243-251
発行日: 1989/06/10
公開日: 2008/11/28
ジャーナル フリーポリエーテルエーテルケトン繊維の溶融紡糸および延伸における,結晶化度と配向の形成に関する研究を行った。溶融紡糸繊維は, DSC,複屈折,広角X線回折により解析した。この繊維を160, 180, 230°Cで延伸し,溶融紡糸繊維と同様の解析を行った。また一軸伸長下で,応力ひずみ挙動,引張強度,破断伸度を測定し,繊維構造との関連を調べた。溶融紡糸を高ドラフト比,高紡糸応力下で行うことにより,かなりの結晶化が紡糸線上で引き起こされるという重要な結果が得られた。さらに,繊維の機械的性質の,紡糸応力および複屈折との関係を明らかにした。抄録全体を表示PDF形式でダウンロード (1701K) -
朝倉 哲郎, 中山 信彦1989 年 45 巻 6 号 p. 252-257
発行日: 1989/06/10
公開日: 2008/11/28
ジャーナル フリー13C NMR spectra of Bombyx mori silk fibroin in a CaCl2 aqueous solution observed as a function of CaCl2concentration. This spectra changed markedly at more than 3.5 M CaCl2 concentration. The decrease in the high resolution NMR-detectable peaks and broadening of the detected peaks were observed. This phenomenon can be regarded as the so-called polymer effect of the silk fibroin and reflects the change in the hydrated state around the Ca2+ and Cl- ions. The latter conclusion was based on the 1H and 43Ca NMR spin-lattice relaxation times of the CaCl2 aqueous solution. The dissolution process of the silk fibroin power in the conc. CaCl2 aqueous solution was monitored by the observation of the high resolution 13C NMR peaks.抄録全体を表示PDF形式でダウンロード (380K) -
菅原 康里, 高橋 璋1989 年 45 巻 6 号 p. 258-264
発行日: 1989/06/10
公開日: 2008/11/28
ジャーナル フリーNBSP (P-sample), NaIO4 oxidized cellulose (A-sample) and NaIO4-NaCIO2 oxidized cellulose (C-sample) were hydrolyzed by sulfuric acid in heterogeneous and homogeneous systems.
Crystallinity Index (CI) was found to be in the order of P>C>A sample and these of the oxidized samples extremely decreased after hydrolysis. In case of the heterogeneous hydrolysis with 4N H2SO4 at 110°C for 24hr, the amount of the residue decreased and the products in the soluble part increased with increasing the functional group content. The product-yields of the oxidized samples were larger than those of the untreated P sample. By hydrolysis of C sample (COOH, 138mmol/100g cell.), glucose (44%), levulinic acid (24%) and formic acid (24%) were produced.
In case of the homogeneous hydrolysis with 72% H2SO4 at 23°C for 5hr followed by 1% H2SO4, the yields of glucose, cellobiose and cellotriose decreased with increasing the functional group content. The yields of glucose homologues as for the oxidized samples were smaller than those of P sample. By hydrolysis of A sample (C=O, 203mmol/100g cell.), glucose (19%), cellobiose (10%) and cellotriose (5%) were obtained along with a small amount of glyoxal and erythrose.抄録全体を表示PDF形式でダウンロード (450K) -
児嶋 佳世子1989 年 45 巻 6 号 p. 265-271
発行日: 1989/06/10
公開日: 2008/11/28
ジャーナル フリーAnalysis of hypophosphite (reducing agent), phoshite (the oxidation product of hypophosphite) and some organic acids (buffers and complexing agents) in electroless nickel plating baths used in fibers for electromagnetic wave shield was carried out within 10 minutes by isotachophoresis using hydrochloric acid and β-alanine buffer as the leading electrolyte.
Analysis formate (oxidation product of formaldehyde as a reducing agent), EDTA and tartaric acid (complexing agents), and Cu-EDTA (copper complex of EDTA) in electroless copper plating baths used in fibers for electromagnetic wave shield was carried out within 10 minutes by isotachophoresis using hydrochloric acid and histidine buffers as the leading electrolyte.
Several metals were simultaneously determined by isotachophoresis employing a solution of sodium acetate and tartaric acid as the leading electrolyte.
The plating speed and effective utility ratio of reducing agent, were caliculated the concentration of nickel, hypophosphite and phosphite in nickel plating bath obtained by this method.
The nickel/copper ratios in extracts from the deposit films into an aqueous solution of HNO3 obtained by isotachophoresis were almost equal to that found by atomic absorption spectrometry.抄録全体を表示PDF形式でダウンロード (421K) -
菊地 正志, 松田 伯1989 年 45 巻 6 号 p. 272-277
発行日: 1989/06/10
公開日: 2008/11/28
ジャーナル フリーロイコナフタザリンは穏和な条件下すなわち染浴に還元剤,強アルカリなしで室温下毛髪を染色し,酸化剤を添加しなくても発色した。染色性はベンジルアルコールを染浴に添加することにより著しく増大した。染料の殆どは毛髪中のキュウティクル層に存在するが,ベンジルアルコールの存在下では容易にコルテックス層まで侵入した。洗濯堅牢度は極めて良好であり, 25%ビリジン水溶液中で還流処理しても脱着しなかった。
切断した染色毛髪の顕微分光スペクトルおよび染色毛髪のラマンスペクトルの結果は毛髪中ではロイコナフタザリンが単純にナフタザリンに酸化されないことを示しており,染料と毛髪との化学的相互作用が示唆された。
ロイコナフタザリンに反して,ロイコキニザリンはベンジルアルコール存在下でも毛髪を全く染色しなかった。抄録全体を表示PDF形式でダウンロード (1161K) -
新宅 救徳, 尾田 十八, 奥野 登起男1989 年 45 巻 6 号 p. 278-286
発行日: 1989/06/10
公開日: 2008/11/28
ジャーナル フリーThe internal strain in the package of nylon-6 yarn is made clear through a model experiment. The experimental results are discussed and compared with the results derived from the elastic theory of yarn package, In the theory, the yarn package is modeled by a cylindrically layered film having an orthotropic elastisity.
The results obtained are as follows;
(1) Inner layers of yarn are compressed in the circumferential direction by the outer layers wound on to the former, and the internal strain increases with increase in the number of layers; the circumferential strain takes its maximum near the surface of the barrel.
(2) As time goes on, the circumferential compressive strain increases but the axial tensional strain decreases.
(3) The circumferential stress relaxes in outer layers, and does most near the surface of the barrel. If the relaxation of stress exceeds a limit, buckling occurs: the buckled region grows outward with increase in the number of yarn layers.
(4) The radial and circumferential stresses change rapidly with increase in the degree of elastic anisotropy and in the radius of the package relative to that of the barrel.
(5) The winding tension given to the yarn must be controlled over a wide range for the residual stress to be kept constant throughout the package.抄録全体を表示PDF形式でダウンロード (605K) -
林 貞男, 小林 勝, 鈴木 崇, 平井 利博, 村山 守生1989 年 45 巻 6 号 p. 287-296
発行日: 1989/06/10
公開日: 2008/11/28
ジャーナル フリーThe geometrical moiré patterns which are formed by superposing two figures of dots arranged on intersections of triangle fretworks have been investigated by using a personal computer. When a moving angle between the two figures is small, the appearing patterns have a hexagonal form. In particular, when two figures of dots arranged on intersections of regular triangle fretwork are superposed at the moving angle (θ) chosen at m1=1, and n1=3, 9, 15, ...... (a multiple of three in an odd-number) according to the equation, tan (θ/2)=m1l2/n1l1, the hexagons in the moiré patterns at each n1 consist of all the same shape, where n1 and m1 are the abscissa and the ordinate of dot lines, l1 is the dot pitch of the abscissa, and l2 is the dot of the ordinate (double the high of triangle-dots). The appearance period of moiré patterns based on moving angle is 60° in the regular triangle-dot arrangement system, and is 180° in the equilateral triangle-dot arrangement system. Since the moiré patterns are very regularly constructed, the working technique will have a bright prospect of developing the new field of various printing patterns for cloths, papers and so forth.抄録全体を表示PDF形式でダウンロード (860K) -
間 和夫1989 年 45 巻 6 号 p. P248-P251
発行日: 1989/06/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (884K) -
朝倉 哲郎, 出村 誠1989 年 45 巻 6 号 p. P252-P257
発行日: 1989/06/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (943K) -
中山 博1989 年 45 巻 6 号 p. P258-P262
発行日: 1989/06/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (2265K) -
平林 潔, 渡辺 誠, 鈴木 誠1989 年 45 巻 6 号 p. P263-P267
発行日: 1989/06/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (1220K) -
高林 千幸1989 年 45 巻 6 号 p. P268-P273
発行日: 1989/06/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (3250K) -
水島 繁三郎1989 年 45 巻 6 号 p. P274-P276
発行日: 1989/06/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (1054K) -
布目 順郎1989 年 45 巻 6 号 p. P277-P282
発行日: 1989/06/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (2249K) -
飯塚 英策1989 年 45 巻 6 号 p. P283-P285
発行日: 1989/06/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (780K)
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