巻号一覧
36 巻, 12 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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矢野 嘉男1980 年 36 巻 12 号 p. P485-P489
発行日: 1980/12/10
公開日: 2008/11/28
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中林 宣男1980 年 36 巻 12 号 p. P490-P495
発行日: 1980/12/10
公開日: 2008/11/28
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Adherence Chromatographyの現状と問題点本田 憲治, 宮本 正樹, 笹川 滋1980 年 36 巻 12 号 p. P496-P503
発行日: 1980/12/10
公開日: 2008/11/28
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野一色 泰晴1980 年 36 巻 12 号 p. P504-P509
発行日: 1980/12/10
公開日: 2008/11/28
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小林 寛伊1980 年 36 巻 12 号 p. P510-P516
発行日: 1980/12/10
公開日: 2008/11/28
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大場 琢磨1980 年 36 巻 12 号 p. P517-P521
発行日: 1980/12/10
公開日: 2008/11/28
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黒田 亘哉1980 年 36 巻 12 号 p. T527-T534
発行日: 1980/12/10
公開日: 2008/11/28
ジャーナル フリーThe relation between the permeability coefficients of some gases and the internal fine structure of polyester films has been studied on samples of the films stretched uniaxially under constant width. The permeability coefficients of He, 02 and N2 for variously stretched films were determined by an apparatus based on the low vacuum method. The internal fine structure of the films was discussed from the wide angle X-ray diffraction pattern, dynamic moduli determined in the stretched and the transversal directions and some other physical properties.
The permeability coefficients, Pa, of the amorphous region of the polymer were calculated for the gases based on the structural model described in a previous paper. The coefficients for O2 and N2 decreased monotonically with increasing stretching ratio, but the coefficient for He showed a maximum at a low stretching ratio.
The variations of Pa with stretching ratio were explained in illustrated terms of the number of possible conformations of chain molecules in the amorphous region of the uniaxially stretched polymer.
The relations between Pa and the dynamic modulus of the film showed some deviation from those found for other films. However the relation for the dynamic modulus in transversal direction to stretching showed a trend concomitant with other films below Tg of the films. The permeability coefficients at a given dynamic modulus increased with increasing the stretching ratio of the film.
In summary, the permeability coefficients for O2 and N2 were strongly affected by the number of possible conformations of the chain molecule in the amorphous region of the polymer. However, the effect to He was not so evident probably because of the contribution of some other mechanisms to the permeation.
For the uniaxially stretched polyester films, little correlation was found between the segmental motion of the chain molecule that contributes to the mechanical properties and the motion that contributes to the permeation of gases.抄録全体を表示PDF形式でダウンロード (1310K) -
鈴木 洋正, 田中 祥恵, 石井 美治1980 年 36 巻 12 号 p. T535-T540
発行日: 1980/12/10
公開日: 2008/11/28
ジャーナル フリーThe photofading rate of Astrazon Orange G in a dioxane-ethanol mixture has been studied in the presence of polymers having certain ultraviolet absorption groups, o-hydroxybenzophenone (HBP) and phenyl benzoate (PB) (polymer K and polymer E respectively).
Polymer K and HBP show emission maxima at 495 and 470 nm, respectively and Astrazon Orange G has λmax, at 503 nm. Therefore, it is expected that energy transfer from such ultraviolet absorbers to Astrazon Orange G may occur, and hence the absorbers act as an accelerator on the photofading rate of the dye.
The effects of the absorbers, found by the rate measurements, are summarized as follows:
(1) Polymer K and HBP act as retarder, while polymer E and PB act as accelerator.
(2) The energy transfer from HBP group to the dye does not occur; Stern-Volmer plot (Fig. 9) shows that HBP group acts as quencher.抄録全体を表示PDF形式でダウンロード (355K) -
小笠原 真次, 甘利 義夫, 黒岩 茂隆1980 年 36 巻 12 号 p. T541-T547
発行日: 1980/12/10
公開日: 2008/11/28
ジャーナル フリーIn a previous report, the diffusion of monoazo acid dyes, Orange II (C. I. Acid Orange 7) and Diacid Supra Red 3B (C. I. Acid Red 35), in nylon 6 films containing various amounts of tannic acid was measured by the film roll method, and the mechanism of the improvement in the wet fastness of acid dyes on nylon by aftertreatment with tannic acid was investigated. From the results obtained by the diffusion measurement, it was deduced that the improvement might be attributed to the lowering of the rate of diffusion of the dyes due to the electrostatic repulsion between the dye and tannic acid and the filling up of pores in nylon by tannic acid. However, since the dye bath used for dyeing film rolls consisted of an aqueous solution of dye alone and had no buffer effect, the effects of tannic acid could not be discussed in detail.
In the present report, in order to investigate the effects of tannic acid in more detail, the diffusion measurements for the same dyes were carried out in dye baths of various pH's adjusted with 0.1 mol/1 acetate buffer solution.
The information obtained from the pH dependences of the diffusion profiles leads to the following speculation; whether the predominant type of dye diffusion is ionic or nonionic is determined principally by the basicity of dye anion and dissociation states of functional groups in dye and nylon. Furthermore, it is ascertained that the sorption and diffusion of the dyes in nylon are suppressed by the electrostatic repulsions between a dye anion and negative charges of dissociated phenolic hydroxyl groups of tannic acid. These electrostatic repulsions seem to be stronger for a dye having more sulfonic acid groups at higher pH's where the degree of dissociation of tannic acid increases.抄録全体を表示PDF形式でダウンロード (459K) -
幾田 信生, 古賀 城一, 黒木 宣彦1980 年 36 巻 12 号 p. T548-T554
発行日: 1980/12/10
公開日: 2008/11/28
ジャーナル フリー未延伸および延伸したナイロン6フィルムの末端アミノ基に結合した光学的プローブ. 5-N, N-ジメチルアミノナフタレン-1-スルホニル基の塩化ナトリウム水溶液中における酸塩基平衡をケイ光強度変化から検討した。プローブをフィルムに結合した際に未反応のプローブがフィルム内に残留するので,これを除くために異なる条件下でフィルムを処理した。各々の条件下で処理したフィルム内のプローブの酸塩基平衡はそれぞれ異なった挙動を示した。それらの酸解離指数, pKはpH減少とともに減少したが, pH 2以下の範囲では一定の値を示した。またそれらのpKは水溶液中におけるプローブ自身のpKよりも著しく小さな値を示した。これらの現象をナイロン6フィルムとバルク水間の静電的ポテンシャルによって説明した。この観点は0.5M塩化ナトリウム水溶液中におけるフィルム内のプローブのpKが水や0.05M水溶液中におけるそれよりも小さかったことから確められた。抄録全体を表示PDF形式でダウンロード (440K) -
黒川 正隆, 古元 嘉昭, 山木 薫, 熨斗 秀夫, 荒木 幹夫, 相宅 省吾, 武内 民男, 林屋 慶三, 山崎 隆, 藤井 忠彦, 宇津 ...1980 年 36 巻 12 号 p. T555-T559
発行日: 1980/12/10
公開日: 2008/11/28
ジャーナル フリーThe artificial blood vessel of 5mm I. D. compound-braided by using two ply yarns of polytetrafluoroethylene and collagen is designed and manufactured by circular braider.
The test tubes of about 50mm in length were implanted in the place of the right external iliac artery in line and in the right common carotid artery as an arteriovenous shunt to the right external jugular vein of an adult mongrel dog. Microknit tubes of 4mm I. D. and 50mm in length, polyester knitted vascular prostheses of Golaski Lab., Philadelphia, Pa., U.S.A., were implanted in the left side respectively as a control.
Bleeding through the tubes at implantation was found less in the new designed tubes than in the Microknits. The specimen obtained two days after implantation showed; 1) test tube implanted in the right external iliac artery was found thrombosed at the sites of anastomoses, and 2) the other one implanted in the right common carotid artery was found free from thrombus formation, whereas no thrombus formation in the Microknit grafts either in the external iliac or in the common carotid arteries.
Poor cuff formation and too much tension of the tube at implantation should be responsible for an early thrombus formation.抄録全体を表示PDF形式でダウンロード (1010K) -
手代木 琢磨, 山本 秀夫, 坂本 宗仙, 砺波 宏明1980 年 36 巻 12 号 p. T560-T563
発行日: 1980/12/10
公開日: 2008/11/28
ジャーナル フリー8種類のアミノデオキシセルロースと6-アミノ-6-デオキシデンプンをジメチルホルムアミドーSO3錯体で硫酸化して,抗血液凝固剤として有名なヘパリンに類似した構造をもつ,酸性ムコ多糖同族体を合成した。生成物のイオウ含有量は,原料の窒素含有量に無関係に10～12%で,これは硫酸基の置換度がほぼ1に該当する。ただし6-アミノ-6-デオキシセルロースは例外で,その硫酸化に対する反応性は非常に低く,イオウ含有量は約7%であった。またこの原料の選択的N-硫酸化をピリジンーSO3錯体で行うと,約半分のアミノ基が反応し,イオウ含有量は約4%であった。さらにこれらの生成物の赤外吸収スペクトルを測定し,比較険討した。抄録全体を表示PDF形式でダウンロード (214K) -
黒田 亘哉1980 年 36 巻 12 号 p. T564-T567
発行日: 1980/12/10
公開日: 2008/11/28
ジャーナル フリーThe permeability coefficients of gases were measured for the polyester films obtained by simultaneous biaxial stretching. The relation between the permeability coefficients of gases and the internal fine structure of polymer film was discussed.
The permeability coefficients decreased with increasing stretching ratio more drastically than the case of uniaxially stretched films, suggesting that the orientation or order of molecular chain in the biaxially stretched polymer film increased more than that of uniaxially stretched polymer film. The permeability coefficients, Pa, of gases in the amorphous region pf polymer were discussed along the same lines as given in our preceding report.抄録全体を表示PDF形式でダウンロード (282K)
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