Transformations and enhanced long-range ordering of mesoporous phenolic resin templated by poly(ethylene oxide-b-ε-caprolactone) block copolymers blended with star poly(ethylene oxide)-functionalized silsesquioxane (POSS)

被引：29

作者：

Li, Jheng-Guang ^{[1
]}

Chung, Cheng-Yu ^{[1
]}

Kuo, Shiao-Wei ^{[1
]}

机构：

[1] Natl Sun Yat Sen Univ, Dept Mat & Optoelect Sci, Kaohsiung 804, Taiwan

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2012年 / 22卷 / 35期

关键词：

DIBLOCK COPOLYMER/HOMOPOLYMER BLENDS; TERNARY POLYMER BLENDS; PHASE-BEHAVIOR; CRYSTALLIZATION KINETICS; COMPETITIVE INTERACTIONS; MICROPHASE SEPARATION; MECHANICAL-PROPERTIES; SURFACE-AREA; MISCIBILITY; MORPHOLOGY;

D O I：

10.1039/c2jm33614f

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：

In this study, we prepared ordered mesoporous phenolic resins templated by poly(ethylene oxide)-b-(epsilon-caprolactone) (PEO-b-PCL) diblock copolymers blended with a star PEO octa-functionalized polyhedral oligomeric silsesquioxane (PEO-POSS) homopolymer. Increasing the PEO-POSS content, and thereby increasing the PEO-to-PCL ratio in the template film, allowed us to tune and enhance the long-range order of the mesoporous phenolic resin. The increased pore size and the more ordered structure were accompanied by a narrower pore size distribution. In addition, we observed an ordered-to-ordered mesophase transition, from a bicontinuous gyroid to a hexagonally packed cylinder structure, upon blending with the star PEO-POSS homopolymer. We anticipate that this approach could be extended to the preparation of other large-pore, long-range-ordered mesoporous materials, such as silica and other metal oxides.

引用

页码：18583 / 18595

页数：13

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