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Synthesis and characterization of novel coatable polyimide-silica nanocomposites

Title
Synthesis and characterization of novel coatable polyimide-silica nanocomposites
Authors
Akhter, T[Akhter, Toheed]Saeed, S[Saeed, Shaukat]Siddiqi, HM[Siddiqi, Humaira Masood]Park, OO[Park, O. Ok]Ali, G[Ali, Ghafar]
DGIST Authors
Park, OO[Park, O. Ok]
Issue Date
2013-12-11
Citation
Journal of Polymer Research, 21(1)
Type
Article
Article Type
Article
Keywords
AminesAtomic Force MicroscopyChemical InteractionsCoatable PolyimideCompatibilityField Emission MicroscopesField Emission Scanning Electron MicroscopyHydrophobicityLike-Like Chemical InteractionsMicrostructureModified Silica ParticlesNanocompositesNuclear Magnetic Resonance SpectroscopyPi-SiO2 HybridsPolyimidesSilicaSilica NanoparticlesStructural SimilaritySynthesis and CharacterizationsThermal StabilityThermodynamic StabilityThermogravimetric Analysis
ISSN
1022-9760
Abstract
We report synthesis of a novel diamine 1,2-bis(4-(Hydrazonomethyl)phenoxy) ethane (bis- HPE) and a derived novel polyimide. The diamine was reacted with PMDA and ODA to synthesize copolyimide. Unmodified and modified silica particles were dispersed in the polyimide to prepare polyimide-silica hybrids: (a) unmodified (PSH-UM), and (b) modified (PSH-M). The PSH-UM were prepared by generating silica particles in situ in PI. In PSH-M, structural group identical to PI, 2,6- bis(3-(triethoxysilyl)propyl)pyrrolo[3,4-f]isoindole-1,3,5,7(2H,6H)- tetraone was introduced into silica nano-particles. The structural similarity enhanced compatibility between organic-inorganic components by like-like chemical interactions as both contain flexible alkyl groups. PSH-M have shown improved surface smoothness, hydrophobicity and thermal stability. Such properties are mandatory for stable coatings. The structure of silica and PI was affirmed by FTIR, EDX, and solid-state 29Si NMR spectroscopy. Morphological and thermal properties of the prepared PI-SiO2 nano-composites were investigated by field emission scanning electron microscopy, atomic force microscopy, contact angle measurement and thermogravimetric analysis. © 2013 Springer Science+Business Media Dordrecht.
URI
http://hdl.handle.net/20.500.11750/2412
DOI
10.1007/s10965-013-0332-0
Publisher
Springer
Files:
There are no files associated with this item.
Collection:
Energy Science and EngineeringETC1. Journal Articles


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