Construction of a Microprocessor-Controlled Film Balance

Toyoki Kunitake, Masatsugu Shimomura, Hironori Inoue, Nobuaki Ono

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

A fully microprocessor-controlled film balance and a film lift system were constructed (Fig. 3). The speed of the moving barrier, which is driven by a vibration-free pulse motor system coupled with linear ball bearing and threaded screw (2 mm pich) (Fig. 1), is changeable from 0.04 mm/s to 8 mm/s. The resolution and the accuracy of the barrier position are 40 pm. Feed-back control from a pressure sensor (Wilhelmy plate system using a load cell sensor) enables measurement of pressure-area isotherms by the pressure-equilibration mode (Fig. 5). The isotherm of stearic acid obtained by this mode was different from that of the constant-speed mode (Fig. 6). The vibration-free film lift, driven by a timing belt-pulse motor system (Fig. 2), and the high resolution (0.03 mN/m) of the pressure sensor are effective for preparation of LB films with good quality. All data and conditions are transferred to a personal computer through the RS 232 C communication interface and analyzed by a BASIC program. Changeable control parameters enable measurements un,der precisely-set conditions.

本文言語英語
ページ(範囲)2058-2063
ページ数6
ジャーナルNIPPON KAGAKU KAISHI
1987
11
DOI
出版ステータス出版済み - 1987

All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 化学工学(全般)

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