巻号一覧
18 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
- |<
- <
- 1
- >
- >|
-
成田 時治1962 年 18 巻 6 号 p. 469-473
発行日: 1962/06/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (465K) -
第3報 毛布の圧縮変形について松尾 達樹1962 年 18 巻 6 号 p. 474-479
発行日: 1962/06/10
公開日: 2008/11/28
ジャーナル フリーIn the previous paper the pressure-deformation of fibre mass is discussed, and its theoretical equation is derived. Here this theory is applied to the detailed analysis of the pressure-deformation of the blanket.
The result of the experiments on the pressure-deformation curves of blanket leads to the following equation: where
When of the first paper is replace by the above equation may be derived in the same way. n is the number of fibre's elements which sustain the compressional pressure P.ξo, _??_ are constants. As the result of compressional relaxation tests, it is found that the average strain (ε) of bended fibre's elements in blankets which is pressumed from the compressional relaxation characters, decreases at first and then increases with increased pressure. The minimum point of ε is at P_??_20_??_70g/cm2. This phenomenon may be explained theoretically ξo varies from
This fact shows that there are two steps in the process of the compression and therefore the parameters N, t in these two steps differ from each other, although phenomenally the deformation curve is approximated by the above equation.抄録全体を表示PDF形式でダウンロード (400K) -
篠原 康夫, 向山 鋭次1962 年 18 巻 6 号 p. 480-485
発行日: 1962/06/10
公開日: 2008/11/28
ジャーナル フリーStyrene, methyl methacrylate, acrylonitrile, vinyle acetate, methyl acrylate and ethyl acrylate were grafted to nylon fiaments by pre-irradiation method and various properties of these graft copolymer filaments were measured.
For nylon-styrene graft, Young's modulus and torsional rigidity increased and tensile strength and elastic recovery decreased. Various vinyl monomers which were grafted onto nylon are divided into two groups. The first group which includes styrene, MMA and acrylonitrile has the same properties of the nylon-styrene graft. Young's modulus and torsional rigidity of the second group which includes MA and EA decreased, VAc is an intermediate between these two groups.
This classification clearly relates to the second order transition temperatures of the vinyl homopolymers. The second order transition temperature of the first group is higher than that of the Nylon and the second group has the lower second order transition temperature.抄録全体を表示PDF形式でダウンロード (366K) -
篠原 康夫1962 年 18 巻 6 号 p. 485-489
発行日: 1962/06/10
公開日: 2008/11/28
ジャーナル フリー2 methyl 5 vinyl pyridine (MVP), styrene, methyl methacylate (MMA), vinyl acetate (VAc) and methyl acrylate (MA) were grafted onto polyethylene and polypropylene filament by pre-irradiation method and various properties of these graft filaments were measured.
Tensile strength and Young's modulus decreased by grafting. Torsional rigidities of polyolefine filaments to which MVP, styrene and MMA were grafted increased and that of MA decreased. VAc was intermediate between these groups. This characterization corresponds to the property of second order transition temperatures of the vinyl homopolymers,
Dyeability of the polyolefine grafts is also discussed.抄録全体を表示PDF形式でダウンロード (312K) -
山田 博, 沢木 泰彦, 木村 和三郎1962 年 18 巻 6 号 p. 490-492
発行日: 1962/06/10
公開日: 2008/11/28
ジャーナル フリーDeresination effects of anionics, nonionics or anionic-nonionic surfactant mixtures was evaluated during the first alkali extraction in a conventional six-stage refining process of hardwood sulfate pulp. Polyoxyethylene nonylphenyl ether (n=9) showed the highest effect as in the refining of sulfite pulp. Polyoxyethylene lauryl ether (n=7) and some anionics, such as sodium dodecylbenzene sulfonate, sodium sperm alcohol sulfate or sodium salt of sulfated polyoxyethylene nonylphenyl ether (n=6), were fairly effective for the deresination.
When mixtures of anionic with nonionic surfactant are used, certain mixing effects could be obtained in place of synergistic effect observed in the refining of sulfite pulp.抄録全体を表示PDF形式でダウンロード (207K) -
V.未溶解残渣の性質からみたエマルジョン硫化における硫化溶解過程中尾 統一, 臼田 誠人, 右田 伸彦1962 年 18 巻 6 号 p. 493-500
発行日: 1962/06/10
公開日: 2008/11/28
ジャーナル フリーTo make clear that the characteristics of S-W curve1) obtained as a function of the amounts of carbon disulfide added at emulsion xanthation, have the significance as a measure of reactivity of dissolving pulp, it is desirable to make clear the correlation between the characteristics of S-W curve and the state of solution of viscose prepared by emulsion xanthation.
The paper discusses, the state of solution of viscose is estimated from the variation of properties of undissolved residues during emulsion xantation. γ-value, amount of highly ordered region and average degree of polymerization are determined on the undissolved residue at varying solubility. Microscopic observation is also carried out on the residue at varying solubility.
The results obtained are as follows:
1) The process of reaction during emulsion xanthation of pulp is devided into three stages from the variation of ratio of degree of sulfidation to dissolution. Variation of amounts of the dissolved in three stages respectively depends on the properties of the pulp, lateral order, degree of polymerization of cellulose and the state of outer layer of fiber. Of the above properties, the last is the most effective on the solubility.
2) The results of γ-value determined and microscopic observation of undissolved residue indicate that the peeling-off reaction from outer surface to center of fiber take place partially.
3) It is considered that the ununiformity of the state of solution of viscose correlates to the ununiformity of S-W curve (A2/A3-1), obtained in the previous paper1)(see Fig. 1). Consequently it is feasible that ununiformity of S-W curve as a measure of reactivity of dissolving pulp be expressed by(A2/A3-1).抄録全体を表示PDF形式でダウンロード (2939K) -
角 祐一郎, 沢口 幸男1962 年 18 巻 6 号 p. 501-505
発行日: 1962/06/10
公開日: 2008/11/28
ジャーナル フリーChanges in hemicellulose and resin content of pulp were studied under various conditions of hot alkaline refining. The following results were obtained:
(1) Within the range of conditions investigated, a correlation seemed to exist between the xylan or mannan contents and yields of pulps refined with hot alkaline solution. Removal of the xylan or mannan fractions from the pulp necessarily resulted in lower pulp yields.
(2) Treatment of extracted β-cellulose with hot alkaline solution resulted in relatively easy dissolution of the xylan and mannan fractions. In situ, however, the xylan and mannan fractions resisted dissolution. The xylan fraction in pulp was particularly resistant.
(3) The beneficial effects of using a surfactant during hot alkaline refining were apparent. With the use of a surfactant, resin removal could be effected without decreasing the yield. Resin removal was influenced by temperature, pH and surfactant concentration.抄録全体を表示PDF形式でダウンロード (416K) -
角 祐一郎1962 年 18 巻 6 号 p. 505-510
発行日: 1962/06/10
公開日: 2008/11/28
ジャーナル フリーThe effects of hydroxyl ion concentration during the hot alkaline refining of dissolving pulp was studied. The results were as follows:
(1) The refining power was a function of the pH, as measured at the treating temperature.
(2) At 95°C, refining did not proceed at pH values lower than 9.5.
(3) The pH of treating solution controlled the rate of refining, but did not determine the final degree of refining.
(4) The crystallinity of cellulose did not change when the pH of the treating solution varied wiehin the range of 8.9-11.2.
(5) A mechanism of alkaline degradation of chain molecules was postulted and discussed.抄録全体を表示PDF形式でダウンロード (420K) -
原田 享, 石塚 修, 坂場 謙二1962 年 18 巻 6 号 p. 511-517
発行日: 1962/06/10
公開日: 2008/11/28
ジャーナル フリーThough it has been known that polypropylene can easily be sulfonated with fuming sulfuric acid, ClSO H etc, practical method is little known.
This study was carried out for the purpose of improving the dyeing properties of polypropylene fibres, especially with regard to sulfonation. In this report, polypropylene fibres were treated as follows.
(1) Fibre was treated in the solution of mixture CH3Cl and ClSO3H.
(2) Fibre was treated in variously concentrated fuming sulfuric acid solutions and washed with CCl4
(3) Fibre was treated with ClSO3H dissolved in the mixture of CH3Cl, CCl4.
(4) Fibre was treated in the upper layer of the mixed solution of CCl4 and ClSO3H, or of fuming sulfuric acid solution.
In all cases, the treated fibres neither coloured nor fused, but a little colouring was observed at high temperature. And the physical properties of the sulfonated fibres decreased slightly in tensile strength and elongation increased. Those fibres have affinity to basic dyes and dispersed dyes.抄録全体を表示PDF形式でダウンロード (425K) -
第2報 アニリン誘導体をカップリング成分とするアゾ染料による染色 第3報 アントラキノン系染料による染色寺村 一広, 広瀬 三郎, 田中 隆吉1962 年 18 巻 6 号 p. 518-525
発行日: 1962/06/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (461K) -
寺田 昭1962 年 18 巻 6 号 p. 526-530
発行日: 1962/06/10
公開日: 2008/11/28
ジャーナル フリーPDF形式でダウンロード (383K)
- |<
- <
- 1
- >
- >|