Synthesis, morphology, and properties of hydroxyl terminated-POSS/polyimide low-k nanocomposite films

Mohammad A Wahab; K Y Mya; C He

doi:10.1002/pola.22906

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Synthesis, morphology, and properties of hydroxyl terminated-POSS/polyimide low-k nanocomposite films

Journal article

Peer reviewed

Synthesis, morphology, and properties of hydroxyl terminated-POSS/polyimide low-k nanocomposite films

Mohammad A Wahab, K Y Mya and C He

Journal of Polymer Science, Part A: Polymer Chemistry, Vol.46(17), pp.5887-5896

2008

DOI: https://doi.org/10.1002/pola.22906

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Abstract

dielectric constants

films

hybrids

nanocomposites

organic-inorganichybrids

polyhedral oligomeric silsequioxane

polyimides

POSS

thermomechanicalproperties

Polyhedral oligomeric silsequioxane (POSS), having eight hydroxyl groups for the preparation of nanocomposites with polyimide (PI) was synthesized by the direct hydrosilylation of allyl alcohol with octasilsesquioxane (Q 8M8H) with platinum divinyltetramethyl disiloxane Pt(dvs) as a catalyst. The structure of allyl alcohol terminated-POSS (POSS-OH) was confirmed by FTIR, NMR, and XRD. A high performance, low-k PI nanocomposite from pyromellitic dianhydride (PMDA)-4,4'-oxydianiline (ODA) polyamic acid cured with POSS-OH was also successfully synthesized. The incorporation of POSS-OH into PI matrix reduced dielectric constant of PI without loosing mechanical properties. Furthermore, the effects of POSS-OH on the morphology and properties of the PI/POSS-OH nanocomposites were investigated using UV-vis, FTIR, XRD, SEM, AFM, transmission electron microscope (TEM), TGA, and contact angle. The homogeneous dispersion of POSS particles was confirmed by SEM, AFM, and TEM. The nanoindentation showed that the modulus increased upon increasing the concentration of POSS-OH in PI, whereas the hardness did not increase very much with respect to loading of POSS, due to soft-interphase around POSS molecules in the resulting nanocomposites. Overall results demonstrated the nanometer-level integration of the polymer and POSS-OH. © 2008 Wiley Periodicals, Inc.

Details

Title: Synthesis, morphology, and properties of hydroxyl terminated-POSS/polyimide low-k nanocomposite films
Authors: Mohammad A Wahab (Author) - Institute of Materials Research and Engineering, Singapore
K Y Mya (Author) - Institute of Materials Research and Engineering, Singapore
C He (Author) - Institute of Materials Research and Engineering, Singapore
Publication details: Journal of Polymer Science, Part A: Polymer Chemistry, Vol.46(17), pp.5887-5896
Publisher: John Wiley & Sons Inc.
Date published: 2008
DOI: 10.1002/pola.22906
ISSN: 0887-624X
Organisation Unit: University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99450708702621
Output Type: Journal article

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Web Of Science research areas: Polymer Science