巻号一覧
38 巻, 6 号
選択された号の論文の11件中1～11を表示しています
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小山 清人, 石塚 修1982 年 38 巻 6 号 p. T239-T245
発行日: 1982/06/10
公開日: 2008/11/28
ジャーナル フリー溶融体の一定ひずみ速度下での伸長粘度を等温伸長レオメータによって測定した。使用した試料は分子量分布の大きく異なる高密度ポリエチレンである。これらすべての試料の伸長粘度-時間関係は,短時間側,すなわち低ひずみ域で,線形粘弾性に従う挙動が観測された。また定常状態は最も分子量分布がせまい試料にのみ認められた。伸長粘度の非線形性は分子量分布に強く依存し,しかもその強さは分子量分布がひろがるにつれて減少した。このような非線形性のデータを構成方程式から予測される値と比較した。その結果,伸長粘度の非線形性の分子量依存性はBogue-Whiteモデルでうまく説明できた。すなわち,このモデルのパラメータaは分子量分布が広がるにつれて増加すると考えられる。また分子量分布の広い試料の伸長粘度は温度依存性が小さいことが明らかにされた。抄録全体を表示PDF形式でダウンロード (411K) -
飯田 昌造1982 年 38 巻 6 号 p. P245-P256
発行日: 1982/06/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (890K) -
許斐 毅志, 大橋 鏡子1982 年 38 巻 6 号 p. T246-T253
発行日: 1982/06/10
公開日: 2008/11/28
ジャーナル フリーThermal degradation and water sorption were investigated for the copolymers (4/6 copolymers), which had been prepared by anionic copolymerization of α-pyrrolidone and ε-caprolactam, in comparison with those of nylon 4, 6 and blends. The compositions of 4/6 copolymers were determined by IR spectrometric analysis. The water sorption isotherms were obtained by a weighing bottle method at various water vapor pressures controlled with saturated salt solutions.
The rates of thermal degradation for 4/6 copolymers at 275°C (3mm Hg, N2) were somewhat smaller than those for nylon 4 and blends in the range of weight loss less than the amount of nylon 4 component. The amount of water sorbed in a monolayer state (Vm) obtained by BET plot, and the molar ratio of Vm to the amide content in amorphous region (Vm/(CONH) (1-α), α: crystallinity) for nylon 4 were about 2 and 1.5 times, respectively as large as those for nylon 6. As to 4/6 copolymers, Vm/(CONH) (1-α) increased linearly with the composition of nylon 4. From the analysis using the cluster function, it was elucidated that the formation of cluster in sorbed water molecules began to arise at a higher moisture regain for nylon 4 than for nylon 6, and the behavior in cluster formation for 4/6 copolymer having the composition 23.2 mole-% nylon 4 was rather similar to that of nylon 4, because of the increase of free amide groups caused by the decrease of crystallinity.
Although there are some problems in a low molecular weight and a low crystallinity, the 4/6 copolymer is interesting from the view point of melt process (spinning), because of their high moisture regain and melting point of about 150°C at which the polymer chain of nylon 4 is thermally stable.抄録全体を表示PDF形式でダウンロード (528K) -
矢上 一夫, 山田 仁穂, 正泉寺 秀人1982 年 38 巻 6 号 p. T254-T258
発行日: 1982/06/10
公開日: 2008/11/28
ジャーナル フリーA fluorescent brightening agent of a stilbene type C. I. FBA 24 (FBN) was found to enhance the fading rate of a blue direct azo dye C. I. (DB15) in aqueous solution, on the irradiation with a high pressure mercury lamp. On the other hand, DB15 depressed the fading of FBN. Fading of both DB15 and FBN was depressed in aqueous solution by the irradiation using a low mercury lamp. Similar effect was also observed in the measurement on cotton fabric, on the irradiation with a high pressure mercury lamp, whereas FBN depressed the fading of the dye on the irradiation with a low pressure mercury lamp. These effects were found in the concentration range of the dye bath of FBN higher than 1×10-5 mol/l. The dye accelerated the fading of FBN at the early stage of the reaction when exposed to a low pressure mercury lamp, a high pressure mercury lamp or a xenon lamp.抄録全体を表示PDF形式でダウンロード (313K) -
功刀 利夫1982 年 38 巻 6 号 p. P257-P263
発行日: 1982/06/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (542K) -
溝口 健作1982 年 38 巻 6 号 p. T259-T265
発行日: 1982/06/10
公開日: 2008/11/28
ジャーナル フリーロープ状布染色における不均染は,染浴温度変動時に,布自身の運動および液流にもとづいて,布塊内外に温度差が生じることにより発生するものと思われる。
このような不均染発生機溝を仮定し,ロープ状布の染色挙動を表現するシミュレーションモデルの提示を試みた。モデルは基本的には,布運動をあらわす式群と染色速度に関係する式群で表現される。
このモデルにより,不均染部の染着率曲線を定量的に追跡することが可能となった。また2, 3の染浴温度-時間曲線に対して均染度を計算した結果から,本モデルは.ある程度実用的にも適用しうるものであることが示された。抄録全体を表示PDF形式でダウンロード (409K) -
神谷 武, 矢崎 勝義1982 年 38 巻 6 号 p. P264-P270
発行日: 1982/06/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (467K) -
寺主 一成, 佐藤 哲也1982 年 38 巻 6 号 p. T266-T273
発行日: 1982/06/10
公開日: 2008/11/28
ジャーナル フリーAuthor has already proposed the depth value C* as a numerical expression of tinctorial strength for dyeings. Though C* value can be calculated easily from the least reflectance of color, the constitution of the three attributes of C* has not yet been clear.
For further understanding of the colorimetric meaning about C* value, it is necessary to clarify the relation between C* value and the three attributes of color.
Through the analysis of C* values measured on the standard color chips arranged according to the Munsell system, the following equations were obtained. where, C*: depth value C: Munsell Chroma V: Munsell Value tanH°: hue coefficient to multiply the chroma ΔH5P: hue step from 5P on Munsell hue circle抄録全体を表示PDF形式でダウンロード (477K) -
金綱 久明, 中山 和郎1982 年 38 巻 6 号 p. P271-P278
発行日: 1982/06/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (1212K) -
脇田 登美司1982 年 38 巻 6 号 p. T274-T278
発行日: 1982/06/10
公開日: 2008/11/28
ジャーナル フリーIt is known that nonionic surfactant is an effective dyeing accelerator in polyester printing by super heat steaming. In this paper, 4 mol ethylene oxide addition of orthophenyl phenol (OPP-(EO)4) was used as a model compound of dyeing accelerator, and the dyeing behavior was compared with those of OPP and urea. OPP-(EO)4 was more effective than urea to accelerate the polyester printing by super heat steaming, however, it was quite ineffective in aqueous dyeing. An addition of OPP-(EO)4 in dyeing solution was found to decrease the dyeing properties, because the partition coeffi-cient decreased by the increase of the solubility of dye.
Furthermore, change of the fine structure of polyester fiber treated with OPP-(EO)4 and OPP was investigated by X-ray diffractometry and dynamic viscoelastic measurement. The fine structure of the fiber was changed markedly by OPP treatment. On the contrary, the change was scarcely observed by OPP-(EO)4.
From these results, the effect of OPP-(EO)4 on the dyeing improvement in polyester printing can be considered to increase the dye solubilization and the dye transfer in printing paste during super heat steaming.抄録全体を表示PDF形式でダウンロード (853K) -
橋本 城次, 市原 祥次1982 年 38 巻 6 号 p. P279-P283
発行日: 1982/06/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (363K)
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