Micropatterned thin film honeycomb materials from regiospecifically modified cellulose.
Thin film honeycomb materials were prepared from regioselectively modified celluloses. The method uses water condensation at the surface of a cellulosic solution as an ordered template to form honeycomb structures. Pore size and distribution is controlled by several factors, one of which is the hydrophilicity of the cellulosic used. The amphiphilic nature of the celluloses was modified with varying lengths of ethylene glycol side chains using 2,6-thexyldimethylsilyl cellulose. It was found that the side chains do affect the honeycomb formation, with longer ethylene glycol chains leading to increased pore uniformity but having little influence on the pore size.
Kadla
John F
JF
Advanced Biomaterials Chemistry Laboratory, University of British Columbia, Vancouver, BC, V6T 1Z4. john.kadla@ubc.ca
Asfour
Fadi H
FH
Bar-Nir
Batia
B
D000081:Acetamides / Q000737:chemistry; D002152:Calorimetry, Differential Scanning; D002482:Cellulose / Q000031:analogs & derivatives* / Q000737:chemistry; D005026:Ethylene Glycols / Q000737:chemistry; D005663:Furans / Q000737:chemistry; D046911:Macromolecular Substances / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D008956:Models, Chemical; D008968:Molecular Conformation; D017646:Organosilicon Compounds / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D014867:Water / Q000737:chemistry
D000081:Acetamides; D005026:Ethylene Glycols; D005663:Furans; D046911:Macromolecular Substances; D017646:Organosilicon Compounds; D014867:Water; C018674:tetrahydrofuran; C030686:acetamide; D002482:Cellulose