巻号一覧
23 巻, 7 号
選択された号の論文の13件中1～13を表示しています
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第12報 アクリルアミドと2-メチル-N-ビニルイミダゾールの共重合町田 誠之, 斎藤 博1967 年 23 巻 7 号 p. 301-305
発行日: 1967/07/10
公開日: 2008/11/28
ジャーナル フリーCopolymerization of acrylamide with 2-methyl-N-vinyl imidazole in acetone was investigated. The monomer reactivity ratios of the copolymerization were determined and the Q and e values were calculated as follows: r1=2.50, r2=0.22; Q2=0.49, e2=-0.06 where r1 and r2 are the monomer reactivity ratios of acrylamide and 2-methyl-N-vinyl imidazole respectively.
The resulting copolymers are soluble in water and also serve as a cationic polyelectrolyte in a dilute hydrochloric acid solution.
In paper making tests, it was found that the copolymer gives the excellent size-retaining and strengthening effects on the forming paper. It is to be noted that the copolymer is effective in the paper making by using calcium carbonate as a filler抄録全体を表示PDF形式でダウンロード (318K) -
第2報 ポリペンテン-1およびペンテン-1と3-メチル-1-ブテンコポリマーの性質阪口 文雄, 辻 和一郎1967 年 23 巻 7 号 p. 306-310
発行日: 1967/07/10
公開日: 2008/11/28
ジャーナル フリーPhysicochemical and mechanical properties of crystalline polypentene-1 and its copolymer with 3-methyl-1-butene were studied. The Form II, one of the two crystalline modifications of polypentene-1 was stable at room temperature and transformed gradually to another modification, Form I, by annealing at temperature range from 50°C to 80°C.
Though mechanical properties of films or fibers of the both crystalline forms are affected by the degree of crystallinity, there is no essential difference in the tensile properties. It was found that copolymer of pentene-1 with 3-methyl-1-butene can cocrystallize in the Form II of polypentene-1 over the whole range of composition, and their melting points change continuously from 80°C of polypentene-1 to 300°C of poly(3-methyl-1-butene) according to the composition.
Although the crystalline copolymer of pentene-1 with minor 3-methyl-1-butene composition has almost the same poor tensile properties as pentene-1 homopolymer, the melting point of polypentene-1 increases by the copolymerization.
It is also recognized that the copolymerization of major 3-methyl-1-butene with pentene-1 is effective to decrease the characteristic brittleness of poly (3-methyl-1-butene).抄録全体を表示PDF形式でダウンロード (315K) -
第3報 柞蚕フィブロインにおけるα-Helixの確認近藤 慶之, 平林 潔, 飯塚 英策, 呉 祐吉1967 年 23 巻 7 号 p. 311-315
発行日: 1967/07/10
公開日: 2008/11/28
ジャーナル フリーThe presence of α-helical conformation in Antheraea pernyi silk fibroin was confirmed by means of X-ray diffractometry, infrared spectroscopy and optical rotatory dispersion as follows:
1. Spacings of 7.4 and 3.7A in the X-ray patterns of fibroin gel are correspond to the twe specific leading spacings in the powder diagram of α-helical poly-L-alanine.
2. In Amide V region of IRS, the fibroin film gives 620cm-1 band typical of α-helix as well as 650cm-1 band typical of random coil, both diminishes in their intensity upon deuteration.
3. The fibroin in aqueous solution at neutral pH shows the Cotton effects typical of α-helix, atrough at 232mμ and a peak at 198mμ with a shoulder arround 210mμ. The he_??_cal content is 10 to 20%.抄録全体を表示PDF形式でダウンロード (859K) -
第3報 編成柄一部消去法についてのアルゴリズム相坂 登, 川上 達也1967 年 23 巻 7 号 p. 316-320
発行日: 1967/07/10
公開日: 2008/11/28
ジャーナル フリーIn the logical treatment of pattern producing signals, an algorithm for the elimination of parts of the knitting pattern is described.
Such elimination gives large scorpe and versatility of patterning in circular knitting machine. In order to knit a fabric with partially eliminated pattern without regard to the pattern producing signals, the signal “1” is sent to the actuators being responsible for knitting the base color of the fabric, and the signal “0” to the remaining actuators for the duration needed.
To eliminate the optional section of the pattern, it is required to know the relation between the numbers of the cylinder needle and the actuator during the knitting action is continued. This relation is known from the count of the Counter For Reading in the control circuit.
The following notations are used in this paper:
N: numbers of actuator,
n: numbers of color in the knitting pattern,
Ab: the b-th actuator,
M: number of cylinder needle,
MA: number of needle between the actuators,
Mc: number of needle needed to knit one course of the fabric,
Ms_??_Me: pattern eliminating section,
Ms: number of the start needle of pattern elimination,
Me: number of the end needle of pattern elimination,
Sb: count of the counter for reading corresponding to Ms for Ay,
Eb: count of the counter for reading corresponding to Me for Ab.
According to the flow chart given in Fig. 4, the calculation to get the values Sb and Eb is performed under given conditions, N, n, M, Ms and Me.
An example of the additional circuit for the partial elimination of patterning is illustrated in Fig. 2抄録全体を表示PDF形式でダウンロード (334K) -
置換基の異なる分散染料の染色性いついて甫天 正靖, 岡田 修造1967 年 23 巻 7 号 p. 321-326
発行日: 1967/07/10
公開日: 2008/11/28
ジャーナル フリーThe dyeability of acrylic fiber “Exlan L” with disperse dyes having different substituted groups was examined at 90°C and 100°C in the states of equilibrium.
The effects of the substituted groups in disperse dyes on their dyeabilities were discussed, using the thermodynamic parameters such as the standard affinity (-Δμ°) the standard heat of dyeing (-ΔH°) and the change in standard entropy (-ΔS°).
It is found that both affinity and heat of dyeing are increased by introducing -NH2 groups or -OH groups into dye molecules.
Consequently, it is considered that polar interaction such as hydrogen bonding contributes to dyeability for acrylic fiber.
On the other hand, non-polar interaction such as Van dar Waal's force also contributes to the dyeability, since both affinity and heat of dyeing are increased by introducing -CH3 groups or -C2H5groups or phenyl groups into dye molecules and by lowering the solubility of the dye in water.
Based on the linear relationship between ΔH° and ΔS° for most of the disperse dyes, it is assumed that the mechanism involved dyeing acrylic fiber does not change with the dye structures or the substituted groups of the dyes, namely that the contribution of both intractions and the steric effects of the fiber structure on the dyes are relatively constant in these cases.抄録全体を表示PDF形式でダウンロード (401K) -
第1報 アクリル酸グラフトポリプロピレン繊維辻 和一郎, 池田 徹雄, 黒川 洋子, 中谷 登1967 年 23 巻 7 号 p. 327-334
発行日: 1967/07/10
公開日: 2008/11/28
ジャーナル フリーAcrylic acid was graft copolymerized onto polypropylene fiber and fabric using Co60 γ-ray preirradiation method.
As the grafted polypropylene has reactive groups such as caroboxyl groups in the grafted side chains, some aftertreatments including cross-linking can be achieved using these reactive groups.
Some properties of the acrylic acid grafted and aftertreated polypropylene fiber and fabric were examined.
The results are summarized as follows:
(1) Tensile properties such as dry, wet and knot tenacity and elongation of the grafted and aftertreated fibers are equal to that of original polypropylene fiber.
(2) Heat shrinkage of the fibers decreases considerably by acrylic acid grafting and the fiber grafted by 62% shows heat shrinkage of 5_??_7% and does not melt till 300°C.
(3) The effects of aftertreatment of the grafted fiber on the heat shrinkage are also remarkable. For example, greater heat stability is obtained by Ca-salt, NH4Cl and epoxy treatments. Melting temperature of the polypropylene monofilament is not improved by acrylic acid grafting, but elevates to as high as above 300°C by the aftertreatment with inorganic salts of some metals such as Na and Ca.
(4) Tensile properties of the grafted and aftertreated fibers at elevated temperature do not improve as expected from the melting property.
(5) Moisture regain of polypropylene fabric increases by acrylic acid grafting and metal salts treatments. Especially in the case of Na-salt treatment the moisture regain is about 10% in the 35.8% grafted sample.
(6) It was found that the polypropylene fabric which is 20.5% grafted with acrylic acid and converted into Na-salt has excellent dyeability for cationic dye and heat settability.
(7) Frictional static electricity of the acrylic acid grafted polypropylene monofilament and fabric decreases to about one half of the original polypropylenes. Conversion of the grafted acrylic acid to a hydrophilic Na-salt shows more remarkable decrease of frictional static electricity.抄録全体を表示PDF形式でダウンロード (529K) -
第2報 アクリル酸グラフトポリ塩化ビニル繊維辻 和一郎, 池田 徹雄, 黒川 洋子1967 年 23 巻 7 号 p. 335-341
発行日: 1967/07/10
公開日: 2008/11/28
ジャーナル フリーAcrylic acid was graft copolymerized onto polyvinyl chloride (PVC) multifilament yarn using Co60 γ-ray irradiation and some properties of the fibers grafted and aftertreated were examined. The results are summarized as follows:
(1) Tensile properties of fibers such as dry and wet tenacity and elongation are almost unchanged by the grafting or aftertreatment.
(2) Heat shrinkage of the PVC fibers is decreased by acrylic acid grafting. The original PVC fiber shows the heat shrinkage up to about 60% of it's original length, while that of the 60.5% grafted PVC fiber is below 10%.
(3) The effects of the aftertreatments of the grafted fibers on the heat shrinkage are remarkable. For instances, about 25% grafted PVC fiber aftertreated with Ca(CH3COO)2 or APO shows heat shrinkage of only 10% or below under 300°C.
(4) No improvement is resulted in tensile properties of the grafted and aftertreated PVC fibers at higher temperature in spite of their excellent heat stability.抄録全体を表示PDF形式でダウンロード (346K) -
第9報 ポリアクリロニトリル繊維の窒素下加熱(250～1000°C)に伴う構造の変化宮道 一夫, 片山 将道1967 年 23 巻 7 号 p. 342-347
発行日: 1967/07/10
公開日: 2008/11/28
ジャーナル フリーPolyacrylonitrile fiber was heat-treated for 1.5 hours in nitrogen at various temperatures mainly between 250 and 1000°C, and measurements of weight, density, solubility, X-ray, electron spin resonance and elementary analysis were carried out on the heat-treated samples. From the results of these measurements, following explanation may be given to the change in structure with the heat-treatment.
By heating in the range of 250 to 280°C, polyacrylonitrile fiber changes to a brittle fused solid due to rapid decomposition with following depression of molecular weight. Solubility for 85% formic acid develops by heating at above 250°C, but is lost by heating at above 400°C. The density increases fairly fast in the range of 230° to 250°C and continues to increase with rising of temperature. These changes may be attributed that low-molecular weight molecules having A type structure are formed and then the structure is transformed gradually to B type structure as dehydrogeneration reaction proceeds at higher temperatures. The results of X-ray and of elementary analysis seem to support the change in structure shown above. Moreover, insolubilization occures above 400°C suggests formation of intermolecular linkages.
Number of unpaired electrons tends to increase as temperature is elevated from 230 to 600°C. It is supposed that stable unpaired electrons detected as singlet spectra by electron spin resonance are mainly of the following types:
It is considered that as temperature is elevated, especially above 500_??_600°C, foreign atoms (including some carbon atoms) are eliminated markedly while carbon-carbon bonds increase in number, resulting in increase of aromatic planar fragments (condensed carbon rings) in size and in number.抄録全体を表示PDF形式でダウンロード (430K) -
第1報 蛍光の定量方法とビニロンの蛍光特性について別所 義雄, 那須野 昭文1967 年 23 巻 7 号 p. 348-353
発行日: 1967/07/10
公開日: 2008/11/28
ジャーナル フリーThe peculiar behavior and physical state of fluorescent dyes on Vinylon (polyvinyl alcohol fiber) have been mainly investigated on the relationship between fluorescence and amount of dye adsorption on the fiber.
A heat-treated polyvinyl alcohol fiber was formalized under various conditions of reaction. As to fluorescent dyes, triazylstilbene, benzoxazol and coumarin derivatives were used.
Generally, fluorescence and critical quenching concentration (amount of dye adsorption to occur quenching) on Vinylon dyed with stilbene derivatives decrease as formalization proceeds. In case of Vinylon formalized in sodium sulfate bath, fluorescence is small and the point of critical quenching concentration occurs at the smaller amount of dye adsorption compared with Vinylon in blank bath. On the other hand, fluorescence and critical quenching concentration on Vinylon dyed with oxazol and coumarin derivatives increase as formalization proceeds and the amount are almost unrelated to the conditions of formalization.
Such behaviors seem to be related with the physical state of fluorescent dyes on Vinylon and they can be explained from the changes in the loss percentage of energy caused by collision between the excited fluorescent dye molecules, in the fiber.抄録全体を表示PDF形式でダウンロード (441K) -
星野 孝平1967 年 23 巻 7 号 p. S187-S190
発行日: 1967/07/10
公開日: 2009/03/26
ジャーナル フリーPDF形式でダウンロード (363K) -
万代 昭次, 酒野 敏明1967 年 23 巻 7 号 p. S202-S211
発行日: 1967/07/10
公開日: 2009/03/26
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久世 栄一1967 年 23 巻 7 号 p. S212-S221
発行日: 1967/07/10
公開日: 2009/03/26
ジャーナル フリーPDF形式でダウンロード (930K) -
別能 恒夫1967 年 23 巻 7 号 p. S222-S226
発行日: 1967/07/10
公開日: 2009/03/26
ジャーナル フリーPDF形式でダウンロード (399K)
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