Specific surface free energies of strontium chlorapatite single crystal determined by contact angles of liquid droplets

被引：16

作者：

Suzuki, T ^{[1
]}

Kumeda, I ^{[1
]}

Teshima, K ^{[1
]}

Oishi, S ^{[1
]}

机构：

[1] Shinshu Univ, Fac Engn, Dept Environm Sci & Technol, Nagano 3808553, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2006年 / 421卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2006.01.092

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Contact angles of water and formamide droplets on a well-formed Sr5CI(PO4)3 crystal with an aspect ratio of 3.2 were observed. The specific surface free energies of the (10 10) and (1011) faces, calculated using the approximation of Fowkes, are 35 +/- 2 and 61 +/- 1 mN/ m, respectively. The stability of the (10 10) face corresponds to the morphology of this crystal, which tends to elongate in the (0 0 0 1) direction. The wide distribution of the measured contact angles is ascribed to the variation in the steps on the surface. An ideal flat surface without step should have uniform specific surface free energy, estimated to be gamma(ter) <= 26 and <= 50 mN/m for the (10 (1) over bar0) and (10 (1) over bar1) faces, respectively. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：343 / 347

页数：5

共 23 条

[1]

BRACE WF, 1962, AM MINERAL, V47, P1111

[2] ATTRACTIVE FORCES AT INTERFACES [J].

FOWKES, FM .

INDUSTRIAL AND ENGINEERING CHEMISTRY, 1964, 56 (12) :40-&

[3]

HUDSON B, 1998, SURFACE SCI

[4] Low-rate dynamic contact angles on poly(methyl methacrylate n-butyl methacrylate) and the determination of solid surface tensions [J].

Kwok, DY ;

Lam, CNC ;

Li, A ;

Neumann, AW .

JOURNAL OF ADHESION, 1998, 68 (3-4) :229-255

[5] Low-rate dynamic contact angles on polystyrene and the determination of solid surface tensions [J].

Kwok, DY ;

Lam, CNC ;

Li, A ;

Zhu, K ;

Wu, R ;

Neumann, AW .

POLYMER ENGINEERING AND SCIENCE, 1998, 38 (10) :1675-1684

[6] CONTACT ANGLES ON HYDROPHOBIC SOLID-SURFACES AND THEIR INTERPRETATION [J].

LI, D ;

NEUMANN, AW .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1992, 148 (01) :190-200

[7] THE EQUATION OF STATE APPROACH FOR INTERFACIAL-TENSIONS - COMMENTS [J].

LI, D ;

MOY, E ;

NEUMANN, AW .

LANGMUIR, 1990, 6 (04) :885-888

[8] Surface characterization of hydrosilylated polypropylene: Contact angle measurement and atomic force microscopy [J].

Long, J ;

Chen, P .

LANGMUIR, 2001, 17 (10) :2965-2972

[9]

Neumann A. W., 1974, Advances in Colloid and Interface Science, V4, P106, DOI 10.1016/0001-8686(74)85001-3

[10] Growth of barium chlorapatite crystals from a sodium chloride flux [J].

Oishi, S ;

Michiba, N ;

Ishizawa, N ;

Rendon-Angeles, JC ;

Yanagisawa, K .

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1999, 72 (09) :2097-2101

← 1 2 3 →