巻号一覧
19 巻, 2 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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第5報 酢化液の黒化と酢化繊維の白度 第6報 低白度酢化繊維の抽出による白度改良斎藤 正雄, 笠井 忠夫, 永井 一弘1963 年 19 巻 2 号 p. 87-94
発行日: 1963/02/10
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) -
第12報 セルロース・トリエステル皮膜の機械性的質木戸 猪一郎, 鈴木 公宏, 五十島 一美1963 年 19 巻 2 号 p. 95-101
発行日: 1963/02/10
公開日: 2008/11/28
ジャーナル フリーThe fibrous cellulose triacetate which is made by the vapour phase acetylation, has almost 100mol% acetylation degree and its film or fiber is brittle due to the crystallinity and molecular symmetry. In order to improve this defect, the primary acetate should be ripened introducing somemol% OH group usually.
The brittleness could be improved by fibrous mixed esterification in vapour phase i. e. acetylation-propionylation or acetylation-butyrylation of cellulose.
In order to measure the brittleness, Sakurada-Tsuji's impact tester of pendulum type was used and influences of acetylation degree, draw ratio or heat-treatment of the acetate film upon its impact strength were investigated.
Tensile strength, ultimate elongation, yield value, Young's modulus, toughness and resilience were obtained from the SS-curves of unfractionated or fractionated triacetate, ripened acetate and mixed ester films, and influences of draw ratio, acetylation degree or _??_ upon the mechanical. properties were investigated.
(1) Log of impact rupture energy obtained is linear-proportional to impact velocity, the height and inclination of the straight line are related to the brittleness of the film.
(2) Tensile strength, Young's modulus, yield value, toughness of unfractionated triacetate film increase with draw ratio and ultimate elongation decrease, and resilience is almost invariable.
(3) Tensile strength, ultimate elongation, yield value, toughness of fractionated triacetate film increase with _??_, Young's modulus and resilience decrease.
(4) Tensile strength, Young's modulus, yield value and resilience of ripened acetate or mixed ester films increase with acetylation degree, ultimate elongation and toughness decrease.抄録全体を表示PDF形式でダウンロード (432K) -
第2報 ペーパークロマトグラフィー法による種々のザンテートにおけるザントゲン基の置換状態 第3報 ザントゲン基の置換位置選択性に関する考察堀尾 正雄, 今村 力造, 小松 直二, 阪田 滉, 加藤 尊重1963 年 19 巻 2 号 p. 102-112
発行日: 1963/02/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (4565K) -
第XIII報 熱処理糸のX線的観察井上 公雄, 岡島 三郎1963 年 19 巻 2 号 p. 113-119
発行日: 1963/02/10
公開日: 2008/11/28
ジャーナル フリーRayons were heat-treated with hot-water or steam at above 100°C as described in the previous papers and change in the fine structure was studied by X-ray method. The following results are obtained;
(1) The higher the temperature of heat treatment, the sharper is the crystalline diffraction pattern, which is considered to represent an increase in crystallinity and packing perfection of the cellulose chains within the crystallites.
(2) The diffraction of cellulose-IV appeares in such a short time treatment as 15 sec. and its amount formed by heat-treatement is larger in the tire-cord rayon than in the textile rayon or cuprammonium rayon.
(3) Although there is a large difference in depressing effect of swelling of rayon between the hotwater treatment and steaming, little difference is detected in the X-ray crystallinity. Therefore the decrease of swelling may be ascribed to the formation of junction points in amorphous parts of rayon.抄録全体を表示PDF形式でダウンロード (1241K) -
第4報 酸加水分解中に起こる結晶化のアルカリ性ハイポブロマイト酸化前処理による防止西村 博, 中尾 統一, 小川 栄三, 右田 伸彦1963 年 19 巻 2 号 p. 120-126
発行日: 1963/02/10
公開日: 2008/11/28
ジャーナル フリーIn order to inhibit recrystallization during acid hydrolysis, a commercial viscose grade pine sulfite pulp was preoxidized with 0.1 N NaOH-0.1 N NaOBr solution for various hours at 25°C, washed, dried, and then subjected to hydrolysis with 3.5 N aq. HCl at 100°C, Amount of highly ordered regions (crystallinity estimated by acid hydrolysis method), degree of polymerization and moisture regain of resulting hydrocellulose were determined to compare the inhibiting effects.
Preoxidation should be carried out for the hours corresponding to the inflexion point of the time of oxidation vs. oxygene consumption curve. The preoxidation for less hours gives an imperfect inhibiting effect, and that for more hours causes oxidative degradation of the highly ordered regions.
The preoxidation method is more effective than the preethanolysis method described in the previous paper. Preoxidation after preethanolysis which increases accessibility of fiber to the oxidizing reagent gives only a slightly higher effect, showing that recrystallization is inhibited perfectly by the preoxidation method. However, hydrocellulose obtained by this method contains more carboxyl and carbonyl groups than ordinary one, though the absolute amounts are low. Therefore, the preethanolysis method without successive preoxidation is recommended when hydrocellulose is prepared as a sample for further investigation.抄録全体を表示PDF形式でダウンロード (490K) -
第4報 束内単繊維の捩り過程における摩擦力木下 茂武, 滝沢 俊治, 島田 庫三1963 年 19 巻 2 号 p. 127-135
発行日: 1963/02/10
公開日: 2008/11/28
ジャーナル フリーThe interfibre frictions induced on a fibre in a sliver by twisting procedure consist of both forces to resist fibre extension and fiber torsion. The component of friction due to fibre extension was observed previously as the withdrawal force of a single fibre from the bundle. In this work, the rolling friction due to fiber torsion in twisted sliver is investigated by using the mechanical model in which a filament is inserted into a comprssed bundle and measuring the critical torsional moment M necessary to slip this filament in the bundle as a function of the load R.
The experimental results on the torsional friction between Nylon bristle inserted perpendicularly in Nylon bundle is as follow:
1) The value of torsional friction M increases with the increasingly applied load R on bundle as the relation of;
M=αRn
with parameters α and n. This relation is almost independent on the rotational speed of filament.
2) The quantitative relation between the moment due to torsional friction M and the force due to withdrawal friction F of the filament in bundle is expressed by;
M=rF,
where r is the radius of the filament.
3) The moment of torsional friction M increases with the increasing number N of crossing fibres to the filament, as the relation of;
M=α0N(1-n)Rn
where α0 is the value of friction parameter in the case of N=1
On the bases of these elementary properties on the torsional friction between filaments the concrete investigation on the mechanical behavior of the twisted sliver will may be developed in future.抄録全体を表示PDF形式でダウンロード (669K) -
第5報 有機溶媒染色法における分散染料の等温染着曲線 第6報 アミノアンスラキノン系分散染料の染着状態と結晶状態におけるエンタルピー差須田 昌男1963 年 19 巻 2 号 p. 136-151
発行日: 1963/02/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (1862K) -
祖父江 寛1963 年 19 巻 2 号 p. 152-158
発行日: 1963/02/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (583K) -
1963 年 19 巻 2 号 p. 167
発行日: 1963年
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (85K)
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