繊維学会誌
Online ISSN : 1884-2259
Print ISSN : 0037-9875
41 巻, 7 号
選択された号の論文の10件中1~10を表示しています
  • 功刀 滋
    1985 年 41 巻 7 号 p. P205-P214
    発行日: 1985/07/10
    公開日: 2008/11/28
    ジャーナル フリー
  • 三石 賢
    1985 年 41 巻 7 号 p. P215-P226
    発行日: 1985/07/10
    公開日: 2008/11/28
    ジャーナル フリー
  • 安塚 勝三
    1985 年 41 巻 7 号 p. P227-P238
    発行日: 1985/07/10
    公開日: 2008/11/28
    ジャーナル フリー
  • 塚田 益裕
    1985 年 41 巻 7 号 p. T265-T270
    発行日: 1985/07/10
    公開日: 2008/11/28
    ジャーナル フリー
    In order to elucidate the molecular conformation and the morphology of silk fibroin obtained by casting from an aqueous silk fibroin solution, infrared spectroscopic and scanning electron microscopic observations were done. The lower the casting speed, the more the silk fibroin molecules gave a beta-rich conformation even if the casting temperature is high. The higher the casting speed, the more the silk fibroin molecules gave a random coil-rich form, indicating that the molecular conformation chiefly depends on the casting temperature and also on the casting speed. The optimum temperature for obtaining the spherulites from the silk fibroin solution (0.4%) was found to be about 25°C.
  • 〔II〕非晶性ポリマーの解析
    金井 俊孝, 高重 真男, 岩井 昭之, 清水 二郎
    1985 年 41 巻 7 号 p. T271-T281
    発行日: 1985/07/10
    公開日: 2008/11/28
    ジャーナル フリー
    The theoretical analysis of the tubular film extrusion of amorphous polymer polystyrene (PS) by using a computer simulation presented several interesting results, such as bubble shape, velocity profile, temperature profile, deformation rate and stretching stress. The influence of the process conditions on the film physical properties and the study on the scale-up were discussed. Bubble pressures and bubble tensions predicted theoretically during the tubular film process generally agreed with those observed experimentally. Further, film shrinkage stresses measured experimentally were proportional to the maximum stretching stresses obtained theoretically. The stretching stress and film shrinkage stress decreased with increasing process temperature and decreasing the blow up ratio. It was found that the change of die diameter influenced the stretching stress at a constant out-put rate.
    As a result of the experimental comparison of the crystalline polymer with the amorphous polymer as to bubble velocity, deformation rate, bubble shape and bubble temperature, there was big difference between the crystalline polymer and the amorphous one. It was found that the dependence of the temperature on the melt viscosity, crystallinity and crystallization rate profoundly influenced the dynamics of the tubular film extrusion.
  • 三輪 実, 大沢 直志, 佐藤 匡生
    1985 年 41 巻 7 号 p. T282-T289
    発行日: 1985/07/10
    公開日: 2008/11/28
    ジャーナル フリー
    Dependences on strain rate and temperature for the tensile strength of epoxy resin and unsaturated polyester resin reinforced with random-planar orientation of short glass fibers were studied.
    In both composites, the tensile strength increased with increasing strain rate and was independent on the nature of interfacial treatment. This increment in tensile strength became slightly large with temperature. The strain rate-temperature reduction held for all composite samples made of epoxy and unsaturated polyester resins along with glass fibers treated with coupling and release agents. The strain rate and the temperature dependences of tensile strength could be estimated based on those dependences of the mechanical properties of matrix resins, the interfacial yield shear strength, and the critical fiber length. The strain rate and the temperature dependences of the tensile strength of the composites resembled the behavior of the interfacial yield shear strength rather than that of the tensile strength of matrix resins.
  • 米竹 孝一郎, 増子 徹, 青砥 浩一, 真島 正樹
    1985 年 41 巻 7 号 p. T290-T299
    発行日: 1985/07/10
    公開日: 2008/11/28
    ジャーナル フリー
    Polyethylene (PE) single crystals prepared from 0.01 wt% solution of PE in xylene were sedimented to form mats. These mats were annealed at various temperatures ranging from 70_??_120°C, and then were dyed at 80°C with C. I. Disperse Yellow 7 (Y-7) or p-aminoazobenzene. The equilibrium sorption (Mo), density, long period, and crystallinity (Cv) obtained for these single crystal mats increased with an increase in annealing temperature (Ta). These values increased rapidly over Ta=110°C (Cv=0.858). The change in Mo was analyzed in terms of the mosaic-block dyeing model by use of above fine structural data. It was suggested that Mo was governed by the sorption in the amorphous side region (Ms) located between crystalline cores parallel to the molecular chain axis, and the sorption in the end amorphous region (Me) located between lamellar surfaces was very small. From the view point of paracrystal model proposed by Hosemann, the amorphous side region corresponds to a grain boundary of microparacrystals. Hence, this region is rich in tie chains having trans type conformation. The difference between Ms and Me is attributable to the fraction of tie molecules on which a long rod-like molecule, Y-7, is easily absorbed; few tie molecules exist in the end region of a single crystal mat. The conformation of tie chains in side region probably becomes more extended by the thickening of lamellae during annealing. This leads to the increase in Mo with increasing Cv.
  • 広津 敏博, 浜中 裕, 溝口 健作, 須田 昌男
    1985 年 41 巻 7 号 p. T300-T302
    発行日: 1985/07/10
    公開日: 2008/11/28
    ジャーナル フリー
    ポリエステル,アクリル,ナイロンおよび絹の標準布帛を, N2よびO2プラズマで処理することによりそれぞれの重量減少速度からプラズマの効果を見積った。重量減少速度を処理の際のプラズマガス圧に対してプロットすると,ある圧力のもとでそれぞれ極大が認められた。いずれの布帛の処理においても, O2プラズマ処理の場合にはN2プラズマ処理の場合よりもより高い圧力条件のところで極大がみられる。W/FMというプラズマエネルギー指標を用いて比較すると, O2プラズマ処理, N2プラズマ処理でそれぞれ1.14×10-2kWhr/g, 3.56kWhr/gに相当する。すなわち, O2プラズマ処理ではより弱いプラズマ条件下でも灰化によるエッチング活性が維持されていることが示唆された。
  • 一條 久夫, 末広 哲朗, 長沢 順一, 山内 愛造, 提坂 道明
    1985 年 41 巻 7 号 p. T303-T307
    発行日: 1985/07/10
    公開日: 2008/11/28
    ジャーナル フリー
    アミノ化及びスルフォン化ポリビニルアルコール極細繊維(SFF)と2種のカチオン交換体を用いてイオン結合法によるβ-ガラクトシダーゼ(ナタ豆由来)の固定化を行い,スルフォン化SFFが最も優れた担体であることを明らかにした。また,固定化物を用いp-ニトロフェノールメβ-D-ガラクトピラノシドの繰り返し及び連続的加水分解反応を行った結果,グルタルアルデヒドによる処理が活性維持に有効な事を見い出した。
  • 木村 実, 松井 真也, 中田 幸次郎
    1985 年 41 巻 7 号 p. T308-T312
    発行日: 1985/07/10
    公開日: 2008/11/28
    ジャーナル フリー
    紙の種々の物理的および力学的性質は構成繊維の集合状態の影響をうける。本研究ではシート密度の局所変動に着目し,これの検出方法について検討した。まず差動トランスを用いた紙厚計をシート上の測定線に沿って走査した。次いで軟X線により紙を通して感光させたフィルム上の,厚さ測定線と対応する線上をデンシトメータの光ビームを走査して坪量変動を求あた。最後にコンピュータ内に読み込まれた測定線上の各点における坪量を対応する厚さで除すことにより,この走査線上の密度の局所変動を求めることができた。
feedback
Top