[en] Porous silica has been successfully prepared from poly(epsilon-caprolactone)-silica hybrid materials on the basis of the template approach. The final texture of the porous silica has been analyzed by the nitrogen adsorption-desorption technique and by small-angle X-ray scattering (SAXS). The porosity of silica can be tailored by the poly(epsilon-caprolactone) (PCL) template, particularly molecular weight, molecular weight distribution, content, and type and number of reactive groups per chain. Increasing the molecular weight, content, and chain polydispersity of the PCL template and decreasing the reactivity and number of reactive groups per PCL chain result in a more heterogeneous microporosity and, as a rule, in larger pores, a broader pore size distribution, a larger specific surface area, and a larger total and microporous volume.
Research Center/Unit :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Materials science & engineering Chemistry
Author, co-author :
Tian, Dong; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Blacher, Silvia ; Université de Liège - ULiège > Department of Applied Chemistry > Laboratory of Chemical Engineering
Pirard, Jean-Paul ; Université de Liège - ULiège > Department of Applied Chemistry > Laboratory of Chemical Engineering
Jérôme, Robert ; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Language :
English
Title :
Biodegradable and biocompatible inorganic-organic hybrid materials. 3. A valuable route to the control of the silica porosity
Publication date :
31 March 1998
Journal title :
Langmuir
ISSN :
0743-7463
eISSN :
1520-5827
Publisher :
American Chemical Society, Washington, United States - District of Columbia