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Volume 70, Issue 2
Displaying 1-7 of 7 articles from this issue
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5. The reactivity with trialkylamine and its characteristicsTsuneo SUHARA, Hiroshi FUKUI1997 Volume 70 Issue 2 Pages 75-83
Published: February 20, 1997
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSFine silica powders were modified with quaternary ammonium groups, and the products were characterized in various respects. 1, 3, 5, 7-Tetramethylcyclotetra siloxane was deposited on fine silica powder at 80°C by a chemical vapor deposition method, where it was catalytically polymerized to form a surface coating of poly (methylsiloxane). Fine silica powder modified with quaternary ammonium groups (XT m, m : carbon number of alkyl chain, 4-12) was synthesized from polymethylsiloxane-SiO2 by hydrosilylation with ρ-chloromethylstyrene and subsequent treatment with trialkylamine. The contact angle of XTm showed a tendency to increase with increasing carbon number of the alkyl chain. Furthermore, in the case of the powder-oil dispersion system, the Bingham yield value increased with increasing the carbon number of the alkyl chain in the dispersed particles and the coagulation force between particles.View full abstractDownload PDF (1036K) -
Porous Alumina Hollow CapsuleShuichiro HAKODA, Hideki SAKAI, Toshiaki KAKIHARA, Takuya KAWA, Katsuh ...1997 Volume 70 Issue 2 Pages 84-91
Published: February 20, 1997
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSPorous alumina capsule has been prepared by utilizing an interfacial gelling reaction of nonaqueous gelling agent (LGBA ; N-lauroyl-L-glutamic acid-a, γ-di-n-butylamide) and hydrolysis reaction of aluminum isopropoxide (AIP). When acidic or neutral water containing formamide was added dropwise to the solution composed of LGBA, AIP, fluorobenzene (oil), and ethanol, hollow gel with alumina particles trapped in its structure was formed at the oil/ water interface. A heat treatment of this composite gel resulted in the formation of the porous alumina capsule with cavity. Furthermore, the effect of hydrolysis rate of alkoxide on the capsule formation was discussed.View full abstractDownload PDF (1506K) -
U. SCHLÖSSER, K. BECK, E. CZECH, R. DYLLICK(BRENZINGER), U. MAYER ...1997 Volume 70 Issue 2 Pages 92-101
Published: February 20, 1997
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSDirection and level of the triboelectric charge of yellow, magenta and cyan toners have to be adjusted in colored toner manufacturing.
The addition of Charge Control Agents allows to overcompensate the polarity of the resin and to adapt it to the preferred position in the triboelectric series. Our concept of ionic CCAs mechanism and products designed according to the concept will be presented in the first section of the paper.
Colorants can also have a strong but more or less undesired impact on the triboelectric charge of the resin which complicates the toner development.
We elaborated methods to overcome this problem. Examples of triboelectrically neutral pigments and dyes will be given in section 2 of the report.View full abstractDownload PDF (1684K) -
Kaoru IGARASHI1997 Volume 70 Issue 2 Pages 102-111
Published: February 20, 1997
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSDownload PDF (754K) -
Junji FURUKAWA1997 Volume 70 Issue 2 Pages 112-123
Published: February 20, 1997
Released on J-STAGE: November 20, 2012
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Nobuo NAKAINO, Kunio NAGASHIMA1997 Volume 70 Issue 2 Pages 124-131
Published: February 20, 1997
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSDownload PDF (1232K) -
Takeo MURANAKA1997 Volume 70 Issue 2 Pages 132-142
Published: February 20, 1997
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSDownload PDF (1833K)
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