CJCU

Chem. J. Chinese Universities ›› 1994, Vol. 15 ›› Issue (1): 20.

• Articles • Previous Articles     Next Articles

Preparation and Structure Characterization of Pure Y-Type LB Films of Lead Stearate

CHEN Hai-Yan1, PENG Xiao-Gang1, YU Lian-Xiang1, ZHOU Yong-Liang1, JIANG Yue-Shun1, LI Tie-Jin1, XU Yue2, GAO Zhong-Min2, WEI Quan2   

  1. 1. Department of Chemistry, Jinlin University, Changchun, 130023;
    2. Center of Analysis and Testing, Jilin University, Changchun
  • Received:1993-01-06 Revised:1993-10-15 Online:1994-01-24 Published:1994-01-24

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Abstract: The collapse pressure of lead stearate(PbSt2)monolayer on the surface of 10-3mol/L PbCl2 solution(aq) is only 36 mN/m.And higher residual PbCl2 concentration was found within the PbSt2 LBfilms deposited on this subphase.However,the LBfilms with an acceptable composition and higher collapse pressure(about 60 Nm/m) was observed in the case of a lower PBCl2 concentration(<5×10-4mol/L).Pure Y-type transfer form for PbSt2 LBfilms was observed on the subphase with a lower PbCl2 concentration by the use of a faster dipping speed(10 cm/min).By X-ray diffraction measurements,it was determined that the pure Y-type PbSt2 LBfilms possess a certain layer mumber which is same to the value recorded during the deposition period.

Key words: Lead stearate, Transter of LB films, Lead sulfide monolayer

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