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Volumn 106, Issue 45, 2002, Pages 11720-11724

Using high pressure phase stability to determine the internal pressure of silica/surfactant composites

Author keywords

[No Author keywords available]

Indexed keywords

ORGANIC SURFACTANTS;

EID: 0037079117     PISSN: 10895647     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp026169b     Document Type: Article
Times cited : (12)

References (38)
  • 14
    • 0011644183 scopus 로고    scopus 로고
    • note
    • At about 30 °C and 1 GPa, liquid water and ice VI can coexist. At higher temperatures and a pressure of 1 GPa, water exists only in the liquid phase. We ignore the possibility of ice inside the sample cell because the sample mixture is heated immediately after it is placed under pressure. In addition, for each sample, ruby fluorescence from flakes at various regions within the sample cell produced the same pressure, indicating a fluid environment.
  • 18
    • 0011644927 scopus 로고    scopus 로고
    • note
    • Control experiments were performed to ensure that large changes in the applied pressure did not occur upon heating. Composites in water were heated in a DAC at a fixed pressure. As the temperature was increased, the external pressure was monitored using ruby fluorescence. On average, the total pressure change was small, ranging from insignificant values to less than 0.3 GPa at temperatures as high as 180 °C.
  • 33
    • 0011647501 scopus 로고
    • built under IRIX 6.2; Wave function Inc.: Irvine, CA
    • Spartan SGI, version 5.0.3 OpenGL (built under IRIX 6.2); Wave function Inc.: Irvine, CA, 1991-1997.
    • (1991) Spartan SGI, version 5.0.3 OpenGL
  • 35
    • 0003910688 scopus 로고
    • Pergamon: Oxford, U.K.
    • The c axis of a hexagonal honeycomb structure is generally considered to be the stiff direction. By calculating a volume compressibility from the cube of the linear change in the a-b direction, we are assuming that the compression along the pores is as large as compression across the pores. This is probably not the case, and thus, the calculated value marks an upper limit for the volume compressibility. (Gibson, L.J.; Ashby, M.F. Cellular Solids: Structure and Properties; Pergamon: Oxford, U.K., 1988. Gibson, L.J. Mater. Sci. Eng. A 1989, 110, 1.).
    • (1988) Cellular Solids: Structure and Properties
    • Gibson, L.J.1    Ashby, M.F.2
  • 36
    • 0024621086 scopus 로고
    • The c axis of a hexagonal honeycomb structure is generally considered to be the stiff direction. By calculating a volume compressibility from the cube of the linear change in the a-b direction, we are assuming that the compression along the pores is as large as compression across the pores. This is probably not the case, and thus, the calculated value marks an upper limit for the volume compressibility. (Gibson, L.J.; Ashby, M.F. Cellular Solids: Structure and Properties; Pergamon: Oxford, U.K., 1988. Gibson, L.J. Mater. Sci. Eng. A 1989, 110, 1.).
    • (1989) Mater. Sci. Eng. A , vol.110 , pp. 1
    • Gibson, L.J.1
  • 38
    • 0019552995 scopus 로고
    • We used a zero pressure bulk modulus of 37 GPa and a derivative with respect to pressure of -5.31 to calculate an average value of the bulk modulus for vitreous silica glass in the pressure range of 0-1 GPa. Kondo, K.-I.; Iio, S.; Sawaoka, A. J. Appl. Phys. 1981, 52, 2826.
    • (1981) J. Appl. Phys. , vol.52 , pp. 2826
    • Kondo, K.-I.1    Iio, S.2    Sawaoka, A.3


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.