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Citation: WANG Xiao-Feng, CHEN Yi-Wang. Ultra-low-ε Nanocomposites of Novel Fluorinated Polyimides Grafted with Polyhedral Oligomeric Silsesquioxane[J]. Chinese Journal of Applied Chemistry, ;2006, 23(5): 484-488. shu

Ultra-low-ε Nanocomposites of Novel Fluorinated Polyimides Grafted with Polyhedral Oligomeric Silsesquioxane

WANG Xiao-Feng ,
CHEN Yi-Wang ^,

1.
School of Materials Science and Engineering, Nanchang University, Nanchang 330047

Corresponding author: CHEN Yi-Wang,
Received Date: 16 June 2005
Available Online: 5 August 2005
Fund Project: 国家自然科学基金(50403016)资助项目 (50403016)

Nanocomposites of 6F-Durene with covalently grafted polymethacrylate(PMA) side chains containing polyhedral oligomeric silsesquioxane(R₇R'Si₈O₁₂ or POSS) units were prepared by means of the thermally-initiated free-radical graft polymerization of methacrylcyclopentyl-POSS(MA-POSS) with ozone-pretreated 6F-Durene.The chemical composition and the structure of the 6F-Durene with grafted methacrylcyclopentyl-POSS side chains(POSS/6F-Durene copolymers) were characterized by nuclear magnetic resonance(NMR),X-ray diffraction(XRD) and field-emission scanning electron microscopy(FESEM).The POSS/6FDurene nanocomposite films had both lower and tunable dielectric constants(ε's) in comparison with the pristine 6F-Durene films,with values between 2.0 and 2.5.
- dielectric constant,
- nanocomposite,
- polyhedral oligomeric silsesquioxane,
- graft polymerization,
- fluorinated polyimide
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