巻号一覧
45 巻, 9 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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堀北 道子, 福田 光完, 高岡 昭, 河合 弘迪1989 年 45 巻 9 号 p. 367-381
発行日: 1989/09/10
公開日: 2008/11/28
ジャーナル フリーシープ,ゴート,キャメル,およびラビットに分類される15種の獣毛繊維の等温水分収着曲線を,主として秤量瓶法を用いて, 30°Cにおいて観測した。得られた結果を, Brunauer, Emmett, Teller (B. E. T.)の多分子層吸着式によって解析し,そのパラメータC(吸着エネルギー因子), vm(最大単分子層吸着水分率)およびnmax(最大多分子層吸着層数)と構造との関連を論じた。
多種にわたる獣毛類にかかわらず,パラメータの値は相互に類似しており, Cは9.40～11.7, vmは5.74～7.18%,さらにnmaxは5～6の範囲にあった。X線回折強度分布よりRuland法によって決定された結晶化度Xxを用いて, vmを非晶度(1-Xx)の関数としてプロットすると,羊毛類には原点を通る直線関係が認められ,その完全非晶物でのvmは9.27%,髄構造をもつ獣毛類はこの直線より上方にプロットされ,さらにスケールの等温収着への影響はほとんどないことが判明した。
特定の羊毛について,その水分収着熱を乾燥状態から飽和水分収着の範囲にわたり,収着水分率の関数として測定し,収着過程の熱力学的考察を行った。羊毛の吸湿は発熱過程であり,微分収着熱QL(収着水の液相水に比較したエンタルピー差)および過剰エネルギーTΔS (収着水の液相水に比較したエントロピー差)を収着水分率の関数として決定し,収着された水分が乾燥状態近傍では極めて高い秩序状態にあり,飽和収着でも液相水に比較してなお高い秩序状態にあることを決論した。抄録全体を表示PDF形式でダウンロード (1509K) -
小川 昭二郎, 杉井 史子, 関 裕之, 岩元 和敏, 妹尾 学1989 年 45 巻 9 号 p. 382-387
発行日: 1989/09/10
公開日: 2008/11/28
ジャーナル フリーA solution of a mixture of polyvinyl alcohol (PVA) and polyethylene glycol (PEG) in water gave a PVA hydrogel including PEG by a given cycle of freezing and thawing. The rate of the release of PEG from the gel decreased with increasing the molecular weight of PEG and the freezing cycle number. Diffusion coefficients of PEG in the gel were determined by the relationship between the release amounts and square root of release time. Diffusion coefficient decreased with increasing the cycle number, then becoming horizontal after a definite number of cycle which depended on the molecular weight of PEG. We found that emulsified triolein was also included in the gel by the freezing and thawing method.抄録全体を表示PDF形式でダウンロード (306K) -
坂部 寛, 伊藤 啓, 鈴木 秀松, 宮本 武明1989 年 45 巻 9 号 p. 388-393
発行日: 1989/09/10
公開日: 2008/11/28
ジャーナル フリーThis work deals with the preparation of orthocortical and paracortical cells by a new method and the protein-chemical characterization of keratin proteins extracted from them. The preparation method consists of three procedures, i.e., i) removal of the cuticle from wool fibers by shaking with glass fiber snippets in aqueous propanol, ii) disintegration of decuticled wool fibers by successive freezing in formic acid, and iii) separation of the disintegrated cortical cells into ortho- and paracortical cells by using a difference in density between the two cortical cells. The relative amounts of the low-sulfur (Low-S), high-sulfer (High-S) and high-glycine-tyrosine (High-GT) protein components were estimated from the gel filtration chromatograms in 8M urea solution. For this analysis, S-car boxy methylkerateines (SCMK) were prepared from the cortical cells isolated. It was confirmed that the paracortex is rich in High-S proteins, while the orthocortex in Low-S proteins.抄録全体を表示PDF形式でダウンロード (2498K) -
佐々木 雅彦, 倉山 勲, 須澤 利郎1989 年 45 巻 9 号 p. 394-398
発行日: 1989/09/10
公開日: 2008/11/28
ジャーナル フリーTo study the interfacial electrical properties of the nylon 6 fibers grafted with acrylic and methacrylic acid and the surface dyeability of cationic dye on these fibers, the ζ-Potential of the fibers was measured in the aqueous solution of Methylene Blue. With an increase in the concentration of the dye, the sign of the ζ-potential changed from negative to positive and the amount of the dye adsorbed on the fiber surface increased. These results suggest that electrostatic interaction and van der Waals force act between the fibers and the dye. The amount of the adsorbed dye decreased with an increase in the degree of grafing.
The free energy of adsorption (Δ_??_) of Methylene Blue on the fibers was calculated from the slope of the ζ-log Cd (Cd: the concentration of dye) curve etc. The negative value of Δ_??_ decreased with an increase in the degree of grafting. The heat of adsorption (Δ_??_) was negative and the entropy of adsorption (Δ_??_) was positive. The positive value of Δ_??_ suggests the importance of entropic interaction (the formation of hydrophobic bond) as a driving force to the adsorption of the dye on the fiber surface. The negative values of Δ_??_ of the ungrafted and the grafted nylon 6 fibers were larger than those of the ungrafted and the grafted polyester fibers, and the Δ_??_ values of the former were smaller than those of the latter documented in our recent report. Therefore, the dependence of hydrophobic bond on the ungrafted and the grafted nylon 6 fibers was smaller than that on the ungrafted and the grafted polyester fibers. It is concluded that the surface dyeability of Methylene Blue on the grafted nylon 6 fibers is lower than that on the ungrafted nylon 6 fiber, because the water-soluble polymer layer is formed at the fiber surface due to the grafted polymer chains.抄録全体を表示PDF形式でダウンロード (330K) -
岡田 安代, 広瀬 美恵, 加藤 敏子, 本村 洋美, 森田 全三1989 年 45 巻 9 号 p. 399-407
発行日: 1989/09/10
公開日: 2008/11/28
ジャーナル フリーThe simultaneous effect of light and perspiration on the fading of 6 vinylsulfonyl reactive dyes, C. I. Reactive Red 22, Blue 19, Black 5, an aminopyrazolinyl azo dye (Yellow), a copper complex azo dye (Blue-Cu) and a copper phthalocyanine dye (Cu-Pc), on cellulose fabrics was investigated by the use of the ‘A method’ of JIS L 0888 with the artificial acidic perspiration of the ATTS (Association for Textile Technical Study) and JIS L 0848. By removing each component from the ATTS artificial perspiration, these dyes were classified into two groups depending on the fading behavior by the component, of which, with an exception, lactic acid gave the largest effect followed by histidine and glucose in decreasing order. Aspartic and panthotenic acids gave a suppression effect with an exception. The ATTS artificial perspiration and lactic acid gave the severe fading for C. I. Reactive Black 5, while the artificial acidic perspiration of JIS L 0848 gave a weak one. The dyed fabrics after soaking in aqueous solutions containing each one component of lactic acid, histidine, glucose, panthotenic acid and aspartic acid showed so complex fading behavior that the simple comparison among the effect of each component could not be made. The effect of component on the fading of VS dyes were appeared in the initial fading in which excess amount of aqueous solution on fabrics took a part and in the subsequent fading under the conditions of 100% RH after the evaporation of excess water. Water gave the accerelated fading in the decreasing order: Red 22>Yellow>Black 5>Blue-Cu>Cu-Pc>Blue 19. Panthotenic acid gave an accerelated effect on the fading when used singly, but a supression effect in a mixture of lactic acid. Cu-Pc was photoreduced during the exposure after soaking in the artificial perspiration, which was shown by the color of leuco compound formed on fabrics and recolored after the oxidation in water or in air.抄録全体を表示PDF形式でダウンロード (609K) -
山本 明彦1989 年 45 巻 9 号 p. P374-P380
発行日: 1989/09/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (1060K) -
東海林 陸夫1989 年 45 巻 9 号 p. P381-P388
発行日: 1989/09/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (1629K) -
豊島 節夫1989 年 45 巻 9 号 p. P389-P393
発行日: 1989/09/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (1109K) -
黒柳 能光1989 年 45 巻 9 号 p. P394-P397
発行日: 1989/09/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (2400K) -
安藤 勝敏1989 年 45 巻 9 号 p. P398-P402
発行日: 1989/09/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (1020K) -
山口 嘉一1989 年 45 巻 9 号 p. P403-P408
発行日: 1989/09/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (1215K)
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