文献类型：期刊文献

英文题名：Effect of template and precursor chemistry on pore architectures of triblock copolymer-templated mesoporous carbons

作者：Long, Donghui[1];Qiao, Wenming[1];Zhan, Liang[1];Liang, Xiaoyi[1];Ling, Licheng[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2009

卷号：121

期号：1-3

起止页码：58

外文期刊名：MICROPOROUS AND MESOPOROUS MATERIALS

收录：;EI(收录号：20091211964680);WOS:【SCI-EXPANDED(收录号:WOS:000265326400008)】；

基金：This work was partly supported by National Science Foundation of China (No. 50730003 and No. 50672025), National Project of Scientific and Technical Supporting Programs Funded by Ministry of Science & Technology of China (No. 2007BAE55B00), National High Technology Research and Development Program of China (No. 2007AA05Z311), and Program for New Century Excellent Talents in University (NCET-07-0285).

语种：英文

外文关键词：Mesoporous carbon; Self-assembly; Ordered; Porosity

摘要：Mesoporous carbons were synthesized by organic-organic self-assembly of triblock copolymer F127 and resorcinol-furfural oligomers. The effects of the mass ratio of F127 to oligomers (F127/RF), reaction time of resorcinol with furfural and furfural/resorcinol ratio (F/R) on pore architecture and phase purity of mesoporous carbons were investigated. Resorcinol-furfural oligomers prefer to mix with hydrophilic poly(ethylene oxide) (PEO) blocks rather than with hydrophobic poly(propylene oxide) (13130) blocks, and thereby cause a swelling of the hydrophilic volume and force the hydrophilic/hydrophobic interface toward low interfacial curvature. As a result, mesostructures including disordered, 3D body-centered cubic (Im3m), 2D hexagonal (p6m), wormlike and mesocellular structures were obtained by increasing the mass ratio of F127/RF. The physiochemical properties of oligomers would determine the quality of interactions between F127 and oligomers, which can affect swelling extent of PEO blocks and the resultant mesostructures. At the same F127/RF ratio, a mesostructure transition from Im3m to p6m to disorder was observed as the degree of polymerization of oligomers increased. This transition is attributed to the decreased thermodynamic driving force for oligomers to mix with PEO blocks. Decreasing F/R ratio could improve the hydrophilic properties of oligomers, which is favor for forming highly ordered mesostructures. (C) 2009 Elsevier Inc. All rights reserved.