Aligned porous structures by directional freezing

被引:330
作者
Zhang, Haifei [1 ]
Cooper, Andrew I. [1 ]
机构
[1] Univ Liverpool, Dept Chem, Liverpool L69 3BX, Merseyside, England
基金
英国工程与自然科学研究理事会;
关键词
D O I
10.1002/adma.200700154
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Materials with aligned porous structures have broad potential in applications such as organic electronics, microfluidics, and tissue engineering. Materials of this type can be fabricated using techniques such as microfabrication, soft lithography, and photolithography. Directional freezing is a cheap, simple, and novel route to prepare aligned porous materials in the form of 2D surface patterns or 3D monolithic structures. A solvent - typically water but also organic solvents or carbon dioxide - is frozen unidirectionally and the pore structure is templated from the aligned solvent crystals that are formed. These methods can produce complex composite materials with a range of aligned pore architectures.
引用
收藏
页码:1529 / 1533
页数:5
相关论文
共 30 条
[1]  
[Anonymous], FREEZE DRYING
[2]   Orientation of regioregular poly(3-hexylthiophene) by directional solidification: A simple method to reveal the semicrystalline structure of a conjugated polymer [J].
Brinkmann, M ;
Wittmann, JC .
ADVANCED MATERIALS, 2006, 18 (07) :860-+
[3]  
Butler R, 2001, ADV MATER, V13, P1459, DOI 10.1002/1521-4095(200110)13:19<1459::AID-ADMA1459>3.0.CO
[4]  
2-K
[5]   Synthesis of porous emulsion-templated polymers using high internal phase CO2-in-water emulsions [J].
Butler, R ;
Hopkinson, I ;
Cooper, AI .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (47) :14473-14481
[6]   Porous materials and supercritical fluids [J].
Cooper, AI .
ADVANCED MATERIALS, 2003, 15 (13) :1049-1059
[7]   Microdomain patterns from directional eutectic solidification and epitaxy [J].
De Rosa, C ;
Park, C ;
Thomas, EL ;
Lotz, B .
NATURE, 2000, 405 (6785) :433-437
[8]   Freezing as a path to build complex composites [J].
Deville, S ;
Saiz, E ;
Nalla, RK ;
Tomsia, AP .
SCIENCE, 2006, 311 (5760) :515-518
[9]   Freeze casting of hydroxyapatite scaffolds for bone tissue engineering [J].
Deville, Sylvain ;
Saiz, Eduardo ;
Tomsia, Antoni P. .
BIOMATERIALS, 2006, 27 (32) :5480-5489
[10]   Synthesis of porous silicon nitride with unidirectionally aligned channels using freeze-drying process [J].
Fukasawa, T ;
Deng, ZY ;
Ando, M ;
Ohji, T ;
Kanzaki, S .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2002, 85 (09) :2151-2155