巻号一覧
21 巻 (1981)
- 4 号 p. 123-
- 3 号 p. 77-
- 2 号 p. 37-
- 1 号 p. 1-
21 巻, 1 号
選択された号の論文の5件中1～5を表示しています
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近藤 三二1981 年 21 巻 1 号 p. 1-13
発行日: 1981/03/25
公開日: 2011/09/20
ジャーナル フリーBentonite, intrinsically to be consider as colloidal substance, is applied for various industrial uses. In this presentation, the relations between the bentonite properties and several industrial requirements were elucidated. It is very important to consider the effect affected by the composition of exchangeable cations of bentonite in all uses. Cabentonite can be activated by Na-exchange treatment. Ca-bentonite has a low swelling power, while the activated one possesses high swelling power and in many ways it is similar to naturally occured Na-bentonite.
The property of bentonite used as binder in foundry sand is affected by the heat stability of montmorillonite which contained in the bentonite.
Montmorillonite from Yamagata has a high regularity in layer stacking and the one from Wyoming is poor in regularity. The existence of interstratified clay mineral is detected in the bentonite from Wyoming. The formation of interstratified clay mineral is also in relation to the composition of exchangeable cations. The significant difference in salty resistance of drilling mud may be owing to the irregularity of layer stacking.
Bentonite plays a role as active solid to agricultural organic chemicals. Some agricultural organic chemicals are decomposed remarkably by the coexistence of bentonite. Bentonite is also used as binder in preparing clay-pellet and dominates the formation of pellet porosity. Hydro-purified smectite has been prepared by extraction from smectite ore. Some of its clay-organic derivatives are also prepared. Those derivatives can be mapped on matrix chart according to their clay mineral species and the kinds of positively charged organic radicals. Alsi-film, which is shaped by utility of film forming character of montmorillonite, is one of interesting material.抄録全体を表示PDF形式でダウンロード (3612K) -
観測竪坑内結晶片岩類の風化金原 啓司, 藤井 紀之1981 年 21 巻 1 号 p. 14-18
発行日: 1981/03/25
公開日: 2011/09/20
ジャーナル フリーA test pit for direct observation of landslide plane was digged through the Sambagawa crystalline schists in the Kito-Munemori landslide area, Tokushima Prefecture. In the test pit, the talus deposits which unconformably cover the crystalline schists were observed, and they are composed of debris and red soils intercalated a clay bed as landslide clay. The clay bed is mainly composed of chlorite schist which was crushed by movement of the talus deposits. Few secondary clay minerals except chlorite/vermiculite were found in the clay bed.抄録全体を表示PDF形式でダウンロード (4589K) -
加藤 悦三, 金岡 繁人, 加藤 昌司1981 年 21 巻 1 号 p. 19-25
発行日: 1981/03/25
公開日: 2011/09/20
ジャーナル フリーThe glass-slide specimen used for the reflection measurement of an infrared absorption spectra is prepared as follows. A part of the suspension of a clay sample, deflocculated well and being free from coarser particles, is poured on the glass-slide, on which a gold coating is put together by firing, and then a clay film forms on the gold coating after drying.
Using the glass-slide reflection method, the IR spectra of the full range from 4000cm-1 to 400cm-1 could be measured. The spectra of some kaolinite samples registered by the reflection method were investigated, comparing them with the one measured by the film transmittance method, where the clay film deposited on the IR transparent material is used. Next, the effect of the thickness of the clay film on the spectrum was illustrated for the reflection method. Further, the spectra of a number of kaolin samples measured by the reflection method were discussed, comparing them with the spectra found in the publication by H. W. van der Marel and H. Beutelspacher, which are measured by KBr method.
The spectra of the OH region by the reflection method were very similar to that by the transmittance method. Concerning the spectra in the 1300-900 cm-1 region, at first, some differences in the wave number of absorption bands were found between both spectra. In the spectra of the 1050-1000 cm-1 region, where two important bands exist, the very remarkable difference was observed, that is, the two bands became opposite in strength as well as showed larger shift of the peaks.
Though the infrared spectra of kaolin minerals measured by the reflecti on method showed some differences from that by the usual film method or KBr method, this reflec-tion method is found to be worth to be applied universally to the measurement of the infrared spectra of clay minerals.抄録全体を表示PDF形式でダウンロード (892K) -
加藤 忠蔵, 黒田 一幸, 都築 一郎1981 年 21 巻 1 号 p. 25-30
発行日: 1981/03/25
公開日: 2011/09/20
ジャーナル フリーVolume resistivities of some Ca-montmorillonite amino acid complex films and their heat-treated films were measured by means of a high resistance meter. The volume resistivities of these films increased with the increase of the amount of amino acid added. In the case of equimolar acids added to montmorillonite, the resistivities of Ca-montmorillonite amino acid complexes increased in the following order; glycine-<β-alanine-<amino-caproic acid-Ca-mont. complexes. This tendency was contrary to the amount of the adsorbed water in the complexes. The volume resistivity of every heat-treated complex film was greater than that of its original complex film because of the dehydration of the adsorbed water which was thought to be charge carriers.
Aminocaproic acid in the interlamellar space of montmorillonite was polymerized to form 6-nylon by heat treatment, which was confirmed by infrared spectroscopy.
The volume resistivities of Ca-montmorillonite film, Ca-montmorillonite-aminocaproic acid complex film and its heat-treated complex film, all of which had been dried in desiccator (P2O5), were determined after the exposure to 100% relative humidity. Though dried Ca-montmorillonite film showed fairly high resistivity, it lowered rapidly when the film was exposed to saturated water vapor. On the other hand, the resistivity of the heat treatment complex film hardly decreased on the exposure.
These results indicated that in the case of aminocaproic acid-montmorillonite complex polymerization of aminocaproic acid in the interlayer space as well as the dehydration of adsorbed water by heat treatment were effective for an improvement of the insulation of montmorillonite films.抄録全体を表示PDF形式でダウンロード (715K) -
1981 年 21 巻 1 号 p. 34
発行日: 1981年
公開日: 2011/09/20
ジャーナル フリーPDF形式でダウンロード (130K)
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