標題: Synthesis and dielectric properties of polyimide-chain-end tethered polyhedral oligomeric silsesquioxane nanocomposites
作者: Leu, CM
Reddy, GM
Wei, KH
Shu, CF
材料科學與工程學系
應用化學系
Department of Materials Science and Engineering
Department of Applied Chemistry
公開日期: 3-六月-2003
摘要: Nanoporous polyhedral oligomeric silsesquioxanes (POSS) containing amine groups (NH2-POSS) were reacted with poly(amic acid) having anhydride end groups to form porous POSS/polyimide nanocomposites. The van der Waals interaction between tethered POSS molecules is incompatible with the polar-polar interaction of imide segments, resulting in a self-assembled system of zigzag shaped cylinders or lamellas about 60 nm long and 5 nm wide, as determined by transmission electron microscopy. The incorporation of 2.5 mol % nanoporous POSS results in a reduction of the dielectric constant of the polyimide nanocomposite from 3.40 for the pure polyimide to 3.09 without any degradation in mechanical strength.
URI: http://dx.doi.org/10.1021/cm0208408
http://hdl.handle.net/11536/27796
ISSN: 0897-4756
DOI: 10.1021/cm0208408
期刊: CHEMISTRY OF MATERIALS
Volume: 15
Issue: 11
起始頁: 2261
結束頁: 2265
顯示於類別:期刊論文


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