Solid-Solid Phase Transition of n-Alkanes in Multiple Nanoscale Confinement

被引：31

作者：

Jiang, Kai ^{[1
,2
]}

Xie, Baoquan ^{[1
,2
]}

Fu, Dongsheng ^{[1
,2
]}

Luo, Faliang ^{[1
,2
]}

Liu, Guoming ^{[1
,2
]}

Su, Yunlan ^{[1
]}

Wang, Dujin ^{[1
]}

机构：

[1] Chinese Acad Sci, Beijing Natl Lab Mol Sci, Key Lab Engn Plast, Inst Chem, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100190, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2010年 / 114卷 / 03期

基金：

中国国家自然科学基金;

关键词：

THIN POLYMER-FILMS; MINIEMULSION DROPLETS; CRYSTALLIZATION BEHAVIORS; GEOMETRICAL CONFINEMENT; MELTING TEMPERATURE; ROTATOR PHASES; NANOCOMPOSITES; NUCLEATION; SURFACE; GROWTH;

D O I：

10.1021/jp9111475

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：

The crystallization behavior of n-C19H40/SiO2 nanosphere composites was investigated by a combination of differential scanning calorimetry (DSC) and temperature-dependent X-ray diffraction (XRD). Three kinds of confined alkalies with different Solid-solid phase transition supercoolings and a surface (or interface) freezing monolayer of n-C19H40 at the bulk liquid/SiO2 interface were Found in the composites at high SiO2 loading. The Surface freezing monolayer induces the chain packing or bulk alkalies by forming a 2D close-packed arrangement Without long-range positional ordering in 3D space. A homogeneous nucleation and growth mechanism is found for the solid-solid transition in confined geometry, in which the supercooling of the transition is sensitive to the confined size.

引用

页码：1388 / 1392

页数：5

共 41 条

[1] Effects of confinement on freezing and melting
Alba-Simionesco, C.
Coasne, B.
Dosseh, G.
Dudziak, G.
Gubbins, K. E.
Radhakrishnan, R.
Sliwinska-Bartkowiak, M.
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2006, 18 (06) : R15 - R68
[2] Effects of confinement on material behaviour at the nanometre size scale
Alcoutlabi, M
McKenna, GB
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2005, 17 (15) : R461 - R524
[3] Glass transition behavior of alumina/polymethylmethacrylate nanocomposites
Ash, BJ
Schadler, LS
Siegel, RW
[J]. MATERIALS LETTERS, 2002, 55 (1-2) : 83 - 87
[4] Nanoscale observation of delayering in alkane films
Bai, M.
Knorr, K.
Simpson, M. J.
Trogisch, S.
Taub, H.
Ehrlich, S. N.
Mo, H.
Volkmann, U. G.
Hansen, F. Y.
[J]. EPL, 2007, 79 (02)
[5] Quantitative equivalence between polymer nanocomposites and thin polymer films
Bansal, A
Yang, HC
Li, CZ
Cho, KW
Benicewicz, BC
Kumar, SK
Schadler, LS
[J]. NATURE MATERIALS, 2005, 4 (09) : 693 - 698
[6] SIZE EFFECT ON MELTING TEMPERATURE OF GOLD PARTICLES
BUFFAT, P
BOREL, JP
[J]. PHYSICAL REVIEW A, 1976, 13 (06) : 2287 - 2298
[7] Crystalline-to-plastic phase transitions in molecularly thin n-dotriacontane films adsorbed on solid surfaces
Cisternas, Edgardo A.
Corrales, Tomas P.
del Campo, Valeria
Soza, Pamela A.
Volkmann, Ulrich G.
Bai, Mengjun
Taub, Haskell
Hansen, Flemming Y.
[J]. JOURNAL OF CHEMICAL PHYSICS, 2009, 131 (11)
[8] THERMODYNAMIC THEORY OF SIZE DEPENDENCE OF MELTING TEMPERATURE IN METALS
COUCHMAN, PR
JESSER, WA
[J]. NATURE, 1977, 269 (5628) : 481 - 483
[9] Structure and Growth of Vapor-Deposited n-Dotriacontane Films Studied by X-ray Reflectivity
del Campo, Valeria
Cisternas, Edgardo
Taub, Haskell
Vergara, Ignacio
Corrales, Tomas
Soza, Pamela
Volkmann, Ulrich G.
Bai, Mengjun
Wang, Siao-Kwan
Hansen, Flemming Y.
Mo, Haiding
Ehrlich, Steven N.
[J]. LANGMUIR, 2009, 25 (22) : 12962 - 12967
[10] The distribution of glass-transition temperatures in nanoscopically confined glass formers
Ellison, CJ
Torkelson, JM
[J]. NATURE MATERIALS, 2003, 2 (10) : 695 - 700

← 1 2 3 4 5 →