巻号一覧
37 巻, 8 号
選択された号の論文の9件中1～9を表示しています
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桜井 雅志1981 年 37 巻 8 号 p. P286-P293
発行日: 1981/08/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (2522K) -
河内 保二1981 年 37 巻 8 号 p. P294-P300
発行日: 1981/08/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (1268K) -
コットン,ニットを中心として西田 道雄1981 年 37 巻 8 号 p. P301-P304
発行日: 1981/08/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (292K) -
山本 雄三, 森下 貞夫, 木下 茂武1981 年 37 巻 8 号 p. T309-T317
発行日: 1981/08/10
公開日: 2008/11/28
ジャーナル フリー配向方向(一段目延伸方向FDDとする)に対し角度α (α=0, 30, 60, 90°)で延伸して得られた再配向アイソタクチックポリプロピレンフィルムの熱収縮が広角及び小角X線回折によって研究された。
延伸-熱収縮により得られた配向アイソタクチックポリプロピレンフィルムを延伸比λ=4 (一部は3)に延伸したフィルムを試料とした。これらの試料フィルムはその熱履歴によっていくつかの特別な結晶配向を示す。熱収縮によってこれらのフィルムの結晶配向は収縮温度の上昇と共にオリジナルフィルム(再延伸前の)の配向にもどる。これは再延伸により結晶及び非晶領域に生じた歪エネルギーの熱緩和によって起るのだろう。一方再延伸フィルムの寸法変化はX線回折パターンに顕著に反映する。しかし,高温で再延伸されたフィルムについては明瞭にはあらわれない。抄録全体を表示PDF形式でダウンロード (1753K) -
神田 拓馬1981 年 37 巻 8 号 p. T318-T321
発行日: 1981/08/10
公開日: 2008/11/28
ジャーナル フリーp-Phenylenediamine, N, N′-dicyanoethyl-p-phenylene diamine and terephthaloyl chloride were copolymerized to give a partially N-cyanoethylated poly(p-phenylene terephthalamide) (degree of substitution: 30%), which was soluble in dimethylacetamide-calcium chloride. This solution was wet-spun and the spun fiber was drawn and heat-treated at above 450°C, thereby decyanoethylation occurred to yield a fiber composed substantially of poly(p-phenylene terephthalamide). This fiber showed the following tensile properties: 10.5g/d tenacity, 1.6% elongation and 760g/d initial modulus, respectively.抄録全体を表示PDF形式でダウンロード (278K) -
O-アセチル化アルジトールの挙動との比較梶山 孝一, 石橋 多代子, 子安 しげ乃1981 年 37 巻 8 号 p. T322-T329
発行日: 1981/08/10
公開日: 2008/11/28
ジャーナル フリーGas chromatography of the mixtures of various O-methyl- and O-ethylglucoses prepared from partially O-methylated and O-ethylated celluloses by acid hydrolysis respectively, was carried out on OV-7 column by the linear temperature-programmed method after the mixtures being converted to O-acetylated aldononitriles.
The Kováts retention indices were determined for each component in the mixtures and the correlation between the chemical structures and the retention indices of O-acetylated aldononitriles of various O-methyl- and O-ethylglucoses was discussed comparing with the case of the corresponding O-acetylated alditols described in the previous papers. It was concluded that the gas chromatographic retention behaviour of O-acetylated aldononitriles was similar to that of O-acetylated alditols except a few points.抄録全体を表示PDF形式でダウンロード (616K) -
小笠原 真次, 滝野 定行, 細谷 武司, 黒岩 茂隆1981 年 37 巻 8 号 p. T330-T334
発行日: 1981/08/10
公開日: 2008/11/28
ジャーナル フリーThe diffusion behaviors of anthraquinone acid dyes, C. I. 61570 and C. I. 62000, in nylon 6 films containing various amounts of tannic acid have been studied. The diffusion measurements were carried out by the film roll method in dye baths of varying pH's and ionic strengths at 70°C.
The pH dependences of diffusion profile, surface adsorption, Cs, and diffusion coefficient, D, of these dyes were almost similar to those of monoazo acid dyes reported in our preceding papers. Further, the extrapolated value of D at C (dye concentration in the nylon film)=0, D0, which is regarded as a measure of the dye mobility independent of dye concentration in nylon, decreased with increased tannic acid content of nylon. These results support the speculation presented in a previous report, that the sorption and diffusion of acid dyes in nylon are suppressed by electrostatic repulsions between the dye anion and the negative charges of dissociated phenolic hydroxyl groups of tannic acid.
The effects of ionic strength, Is, on the sorption and diffusion of C. I. 61570 at pH 4 were studied for nylon samples untreated and treated with tannic acid. In the latter case, noticeable Is dependences were observed. Namely, the maximum diffusion coefficient, the corresponding dye concentration and Cs in tannic acid treated nylon, were suppressed at low Is. The increase in Is brought these values up to those found for untreated nylon. D0 values were lowered by the presence of tannic acid and the positive dependence of D0 on Is was stronger for treated nylon than for untreated one. These facts clearly evidence the existence of electrostatic interactions between the dye anion and the dissociated phenolic hydroxyl groups of tannic acid.抄録全体を表示PDF形式でダウンロード (354K) -
岩垂 芳男, 岡部 瑞穂, 長山 芳子1981 年 37 巻 8 号 p. T335-T341
発行日: 1981/08/10
公開日: 2008/11/28
ジャーナル フリーThe effects of alkali metal chlorides on dyeing properties of formalized poly (vinyl alcohol) (PVA) fiber (I) and its acid-treated product (II) with direct dye have been studied at 80 and 90°C. Each dyeing was made in a finite bath (liquor ratio 1:2500) with 1×10-5 mol/l of direct dye and with 0.1mol/l of alkali metal chlorides. The equilibrium sorption of dye (C∞) (Table 2) and the apparent diffusion coefficients (D) (Table 3) decreased with an increase in the degree of formalization of the fiber. The D values decreased in the order, NaCl>KCl>CsCl, but C∞ values increased in the reverse order. The D and C∞ values for II were fairly larger than those for I. The standard affinities of dyeing (-Δμ°) (Table 4) increased in the order, NaCl<KCl<CsCl, but the standard heats of dyeing (-ΔH°)and the standard entropies (-ΔS°) decreased in the reverse order.抄録全体を表示PDF形式でダウンロード (460K) -
中島 利誠, 田丸 秀子, 服部 仁美1981 年 37 巻 8 号 p. T342-T345
発行日: 1981/08/10
公開日: 2008/11/28
ジャーナル フリーThe present work attempts to elucidate in detail the sorption properties of poly (acrylonitrile)/ poly (acrylamide) blends at low vapor pressures. The adsorption was measured with a volumetric water sorption apparatus similar to those widely used for surface area measurements. The results were compared with our previous results obtained by the weighing bottle method. It was found that the vacuum apparatus provided higher precision than the classical weighing bottle method, even under a relative vapor pressure, 0.1. The results obtained on the blends were compared with those on an acrylonitrile/acrylamide copolymer sample.
The sorption capacity of the blends was less than that of the copolymer at a relative vapor pressure, 0.2. This was attributed to the existence of strong hydrogen bond interactions between the amide groups in the blends. However, above a pressure, 0.3, the hydrogen bonds seemed to be no longer operative, probably due to the formation of the monolayer of adsorbed water. The total uptake of water by the blends could be taken as the sum of the individual uptakes of the blend components. This exact same behaviour was found at all pressures for the copolymer, the total uptake was the result of the linear additivity of the uptakes of the components.抄録全体を表示PDF形式でダウンロード (268K)
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